Corsi Collection of Decorative Stones

Page 2 of 10, showing 101 - 200 of 1000 stones.
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OUMNH number Name and quarry location Geological description
OUMNH number Name and quarry location Geological description
738stone 738 Sicilian jasper, diaspro-agata di Giancavallo, from Feudo Giancavallo, near Bisaquino, Palermo, Sicily, Italy Brecciated jasper, clasts mainly yellow, in places altered grey-brown. Matrix of colourless crystalline quartz has some inclusions of iron sulphides on ghost faces. Agate is present as late stage infill within quartz matrix.
733stone 733 Sicilian jasper, diaspro-agata di Cefalú, probably from Cefalà Diana or Bagni di Cefalà, Palermo, Sicily, Italy Yellow-brown brecciated jasper with narrow chalcedony-filled fractures and agate matrix, matrix voids filled with crystalline quartz. Pale speckled areas are filler.
737stone 737 Sicilian jasper, diaspro-agata di Caccamo, from Caccamo, Palermo, Sicily, Italy Brecciated jasper with yellow brown-dark brown clasts. Colourless crystalline quartz matrix has areas of chalcedony with botryoidal surface clearly visible in some places.
735stone 735 Sicilian jasper, diaspro-agata di Adrano, from Adriano, Sicily, Italy Brecciated yellow jasper, clasts heavily fractured, fracture-fill and matrix are greyish white chalcedony stained yellowish away from clasts. Brown patches on specimen are filler, generally in crystalline quartz-lined cavities.
780stone 780 Sicilian jasper, diaspro di Taormina, from Taormina, Messina, Sicily, Italy Quartzite, coloured red by iron-bearing solutions emanating from fractures.
741stone 741 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy, and most probably from Giancavallo, Bisaquino, Grattieri, or Santa Caterina, all in the province of Palermo. Brecciated jasper (ferruginous compact fine-grained quartz); brown/yellow/green translucent clasts in colourless crystalline quartz matrix. Yellow speckled 'clasts' and brown 'veins' are wax filler.
977stone 977 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Brecciated orange-brown jasper with fractured agate matrix. Goethite forms inclusions in matrix and full/partial rims to clasts. Dendritic manganese oxides emanate from clast fractures, crystalline quartz fills smaller voids, microcrystalline calcite the larger ones.
978stone 978 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Brecciated red jasper with heavily fractured agate matrix patchily speckled with hematitic inclusions. Diffuse brown goethite forms inclusions and full/partial rims to clasts. Dendritic manganese oxides are common along fractures in matrix, crystalline quartz fills smaller voids, microcrystalline calcite the larger ones.
980stone 980 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Partially silicified limestone, voids and fractures filled with agate. Some black calcareous limestone especially on reverse. Dark brown areas are filler.
981stone 981 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Banded jasper, perhaps originally oolitic ironstone or limestone. Cavities and fractures are filled with colourless quartz.
982stone 982 Sicilian jasper, diaspro di Sicilia, from Sicily, Italy Brecciated yellow-brown jasper, agate-filled fractures and matrix, voids filled with crystalline quartz.
761stone 761 Sicilian jasper, diaspro di Santa Cristina Gela, from Santa Cristina Gela, Palermo, Sicily, Italy Breccia of yellow-brown jasper clasts cemented by agate, with cavities infilled by colourless quartz crystals. The whole rock has been heavily fractured, and recemented with quartz or with brown to black iron/manganese oxides, which also emanate as dendrites from fractures. A wide vein of granular orange calcite crosses the back of the specimen.
766stone 766 Sicilian jasper, diaspro di San Stefano di Quisquina, from Santo Stefano Quisquina, Agrigento, Sicily, Italy Silicified polymict limestone conglomerate with scattered pyrite and rhombohedral ?dolomite crystals, and some residual fossils. Matrix is part chalcedonic, part colourless quartz. Speckled green areas are filler.
772stone 772 Sicilian jasper, diaspro di San Stefano di Quisquina, from Santo Stefano Quiquina, Bivona, Agrigento, Sicily, Italy Silicified limestone breccia with agate/crystalline quartz matrix and filling of fractures. Darker brown areas are filler.
769stone 769 Sicilian jasper, diaspro di Piano Maglio, from Piano Maglio, Altofonte, Palermo, Sicily, Italy Heavily fractured banded jasper with rhombohedral carbonate mineral inclusions (dolomite/siderite?). Fractures are filled with grey agate, in turn filled with colourless quartz. Fine calcite or ankerite veins cross the specimen.
776stone 776 Sicilian jasper, diaspro di Palermo, probably diaspro di Navurra, from Palermo, Sicily, Italy; most probably from Feudo Navurra, near Casteldaccia. Brecciated jasper, clasts mottled orange/red with colourless/scarlet banded agate around rims. Matrix is impure grey or pure white coarsely crystalline calcite.
782stone 782 Sicilian jasper, diaspro di Monreale, from Monreale, Palermo, Sicily, Italy Heavily fractured red jasper, fractures are agate-filled. Side view shows some yellowish agate with platy inclusions of pyrite/marcasite. There are some small infills of crystalline quartz and a few quartz-filled fractures.
781stone 781 Sicilian jasper, diaspro di Moardo, from Monte Moardo, Altofonte, Palermo, Sicily, Italy Silicified polymict limestone breccia, of fractured clasts with a drusy overgrowth of white quartz crystals in turn coated with agate. Matrix is orange iron-stained or white granular quartz. Note relic microfauna.
762stone 762 Sicilian jasper, diaspro di Misilmeri, from Misilmeri, Palermo, Sicily, Italy Brecciated jasper. Heavily fractured clasts are green or transparent with patchy yellow inclusions. Cement is crystalline quartz and pale green microcrystalline calcite. Dark brown and dark green speckled areas are filler.
764stone 764 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy A fractured banded yellow and green jasper breccia, matrix and fracture fills are part chalcedony part colourless quartz. Microfossils are abundant in bright yellow areas.
767stone 767 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy A banded brown, yellow and green jasper breccia, matrix and fracture fills are part chalcedony part colourless quartz, fractures also with bands of pyrite. Microfossils are evident in some bright yellow areas.
771stone 771 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy Brecciated red jasper with heavily-fractured agate matrix. Wider fractures are filled with white fine-grained quartz and yellowish carbonate mineral, the latter also present as colourless-yellow zoned rhombohedral crystals in both jasper and agate matrix. Pinkish-brown areas are filler.
774stone 774 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy Breccia or red jasper clasts in a white quartz/agate matrix, re-fractured and cemented with colourless crystalline quartz containing scattered inclusions of green chlorite.
778stone 778 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy Brecciated jasper. Red hematitic pellitic clasts are brown, goethitic at margins and along fractures, and are surrounded by milky agate. Matrix is creamy white granular/drusy calcite with patchy iron-staining.
779stone 779 Sicilian jasper, diaspro di Giuliana, from Giuliana, Palermo, Sicily, Italy A breccia of green and brown jaspery siliceous clasts in a red, iron-stained, calcareous matrix
777stone 777 Sicilian jasper, diaspro di Coltobarro, perhaps diaspro di Caltavutura, from Coltabarro is perhaps Caltavutura, Palermo, Sicily, Italy Green silicified ?limestone, fracture and cavity boundaries altered to hematite, lined with calcite crystals and infilled with colourless crystalline quartz.
765stone 765 Sicilian jasper, diaspro di Castro Giovanni, from either Enna, Sicily, or more probably Monte di Castrogiovanni, near Bivona, Agrigento, Sicily, Italy Silicified limestone/limestone conglomerate coloured black by included crystals of hematite. A large yellow goethitic pebble is prominent, and scattered mollusc shells are also evident. Matrix and fracture fills are chalcedony.
775stone 775 Sicilian jasper, diaspro di Cassaro, probably from Monte Cassero, Castronovo di Sicilia, Palermo, Sicily, Italy A heavily fractured silicified limestone, yellow jaspery areas containing a few mollusc shells. Fractures are filled with colourless crystalline quartz. Reddish-brown veins contain filler.
773stone 773 Sicilian jasper, diaspro di Cammerata, from Cammarata, Agrigento, Sicily, Italy Jasper partly coloured by yellow-brown goethitic inclusions, partly by a mixture of goethitic and green silicate mineral inclusions.
763stone 763 Sicilian jasper, diaspro di Adrano, from Adragno, near Sambuca, Trapani, Sicily, Italy Yellow-brown jaspery areas are cemented by opague white or colourless chalcedony, agate-banded in place. Cavities are infilled with colourless quartz crystals. Fractures crossing specimen are filled with agate. Larger brown patches are filler.
606stone 606 Serpentine, possibly Sterzinger Serpentin, from Vipiteno (Sterzing), Bolzano, Trentino-Alto Adige, Italy Strongly-foliated meta-ultrabasic rock, green domains appear to be finely-recrystallised tremolite/actinolite. Large pinkish-brown augen-shaped grains may be orthopyroxene, altered to varying degrees. Pyrite and chromite/magnetite are abundant.
568stone 568 Serpentina 'verde ranocchia', locality unknown Strongly-sheared and serpentinised ultramafic rock with abundant veinlets (some en echelon) and grains of oxide mineral within the serpentine, and minor veins of calcite.
567stone 567 Serpentina verde ranocchia, from Wadi Umm Esh, Wadi Atalla region, Eastern Desert, Egypt; or a variety of verde di Polcevera, from Pietra Lavazzara, Genoa, Liguria, Italy Strongly sheared and serpentinised ultramafic rock with abundant granular patches and veinlets of black oxide minerals within the serpentine. Later veinlets of yellow serpentine cut the rock in sub-linear arrays.
569stone 569 Serpentina verde di Varallo, from Varallo, Novara, Piedmont, Italy Brecciated serpentinite-marble with light to dark green fragmented serpentinite clasts in fine-grained marble and vein calcite matrix. Serpentinite has local concentrations of fine-grained oxide mineral.
570stone 570 Serpentina verde di Varallo, from Varallo, Novara, Piedmont, Italy A sheared breccia of serpentinite clasts in fine-grained calcite matrix, with abundant streaks and grains of dark grey oxide minerals.
572stone 572 Serpentina verde di Susa, from Val di Susa, Turin, Piedmont, Italy Heavily fractured serpentinite, cemented with grey calcite.
571stone 571 Serpentina verde di Susa, from Val di Susa, Turin, Piedmont, Italy Serpentinite veined with fine-grained grey calcite.
609stone 609 Serpentina verde di Sardegna, from Sardinia, Italy Serpentinite with hints of coarse-grained peridotite microstructure evident in dark domains. Contains scattered crystals of pyrite and disseminated flecks of pale yellow carbonate mineral.
584stone 584 Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy Brecciated serpentinite.
585stone 585 Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy Brecciated serpentinite.
586stone 586 Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy Brecciated serpentinite.
587stone 587 Serpentina verde di Polcevera, from Polcevera, Genoa, Liguria, Italy Brecciated serpentinite.
596stone 596 Serpentina verde di Piombino, from Piombino, Livorno, Tuscany, Italy Green and white-banded L-S tectonite with low-strain augen. It is made almost entirely of narrow prismatic minerals, probably actinolite (green) and clinozoisite (white), strongly aligned in foliae, at high angles to fabric in augen. There are possibly some pyroxene relics in augen. These minerals suggest it could be derived from a rather melanocratic gabbro.
594stone 594 Serpentina verde di Genova, from Genoa, Liguria, Italy Brecciated serpentinite. Broken clasts of pale green serpentine, platey 'striped' dark green serpentine and brown/white marble in a matrix of brown and white calcite.
597stone 597 Serpentina verde di Genova, from Genoa, Liguria, Italy Metaperidotite - probably serpentine and actinolite.
573stone 573 Serpentina verde di Calabria, from Calabria, Italy Brecciated serpentinite.
575stone 575 Serpentina di Valsabbia, from Valsabbia, Brescia, Lombardy, Italy Breccia with clasts mainly of serpentinite/ophicalcite, a few of marble.
484stone 484 Serpentina di Torino from the province of Turin, Piedmont, Italy Poorly-sorted breccia of heavily fractured, calcite-cemented clasts of serpentinite in a gritty ferruginous matrix.
963stone 963 Serpentina di Santa Caterina, from Santa Caterina, island of Elba, Livorno, Tuscany, Italy Serpentinite, finely brecciated and veined with calcite.
618stone 618 Serpentina di Genova, from Genoa, Liguria, Italy Mottled quartz-serpentinite rock. Coarse mottles of green-brown net-veined serpentine in a massive quartz matrix. Note paler rims to serpentine patches.
620stone 620 Serpentina di Genova, from Genoa, Liguria, Italy Silicified serpentinite. Rounded fragments of serpentinite with abundant euhedral to granular oxide inclusions in minor quartz matrix. The edges of the fragments have blue-green reaction rims.
588stone 588 Serpentina di Corsica, from Corsica, France Amphibolite; probably mostly actinolite - mainly granular but fibrous/prismatic in veins. Irregular patches and veinlets of opaque oxide (probably magnetite). Contains disseminated pale yellow carbonate flecks.
591stone 591 Serpentina di Corsica, from Corsica, France Strongly altered and deformed coarse-grained former olivine gabbro. Note areas with disseminated pale yellow carbonate flecks.
592stone 592 Serpentina di Corsica, from Corsica, France Serpentinised harzburgite with coarse relict texture making it easy to distinguish former olivine and orthopyroxene domains. Note the chrysotile veins.
598stone 598 Serpentina di Corsica, from Corsica, France Breccia of angular clasts of brown and pale green serpentinite in a paler coloured matrix with a reticulated system of very fine grey fibrous chrysotile veins throughout.
619stone 619 Serpentina di Corsica, from Corsica, France Strongly-foliated epidote-rich gneiss, probably derived from a basic igneous rock.
595stone 595 Serpentina di Chiavari, from Chiavari, Genoa, Liguria, Italy Altered peridotite. The green is mainly fine actinolite; whitish areas are scattered with tiny opaque flakes perhaps of chromite. The dark coloured oxide, probably magnetite, has with brown and green-black reaction rims.
965stone 965 Serpentina di Carrara, from Carrara, Massa e Carrara, Tuscany, Italy Perhaps a serpentinised lherzolite. Large pale crystals look like enstatite as porphyroclasts in a deformed and recrystallised matrix.
966stone 966 Serpentina di Carrara, from Carrara, Massa e Carrara, Tuscany, Italy Serpentinite with cracked and serpentinised pseudomorphs of olivine and pink bastitised pyroxene. Planar fabric is visible on the sides of the sample, possibly spinel, but now altered. It is permeated by white calcite. The protolith was possibly a spinel peridotite.
602stone 602 Serpentina di Cagliari, from Cagliari, Sardinia, Italy Serpentinite crossed by a reticulated array of veins rich in black oxide mineral grains.
603stone 603 Serpentina di Cagliari, from Cagliari, Sardinia, Italy Serpentinite crossed by a reticulated array of veins rich in black oxide minerals.
613stone 613 Serpentina delle Alpi, perhaps serpentina di Valmalenco, from the Alps, and perhaps Valmalenco, Sondrio, Lombardy, Italy Serpentinite with rounded grains and granular aggregates of grey oxide mineral in dirty-yellow to blue-green serpentine. Two weak foliations evident.
599stone 599 Serpentina delle Alpi, from the Alps (not confirmed) A hydrothermally altered mafic or ultramafic rock, most probably a serpentinised peridotite.
600stone 600 Serpentina delle Alpi, from the Alps (not confirmed) Serpentinite with calcite-filled veins and cavities.
605stone 605 Serpentina delle Alpi, from the Alps (not confirmed) Serpentinite with disseminated pyrite and with yellow carbonate flecks.
612stone 612 Serpentina delle Alpi, from the Alps (not confirmed) Metagabbro?
615stone 615 Serpentina delle Alpi, from the Alps (not confirmed) A heavily altered calcarenite.
608stone 608 Serpentina delle Alpi, from the Alps Silicified serpentinite breccia. Rounded clasts of granular silicified serpentine in massive quartz matrix, with streaks of cream quartz-dolomite.
614stone 614 Serpentina delle Alpi, from the Alps Metagabbro?
616stone 616 Serpentina delle Alpi, from the Alps Metagabbro.
709stone 709 Serpentina delle Alpi, from the Alps Serpentinite with colourless plagioclase porphyroblasts. Orange coloration is wax filler.
710stone 710 Serpentina delle Alpi, from Perhaps the Western Alps Sheared serpentinite with oval augen (former pyroxene) and fairly abundant iron oxide. Shear fabric is present throughout, but one part of sample has paler (leached) serpentine.
576stone 576 Serpentina dell'Elba, from the island of Elba, Livorno, Tuscany, Italy Dark green serpentinite with colourless plagioclase porphyroblasts.
409stone 409 Semesanto, from Isle of Skyros, Sporades, Central Greece Polymict sheared limestone breccia in clay-rich matrix.
436stone 436 Semesanto di Milano, from Milan, Lombardy, Italy Lower Jurassic limestone. A crinoidal biosparite, the red crinoid debris overgrown with white calcite rims, and with coarse sparry calcite in the interstices.
668stone 668 Selce di Roma, from the Capo di Bove, Rome, Lazio, Italy Altered phonolitic lava, with a few porphyric leucite and biotite crystals.
669stone 669 Selce di Roma, from the Capo di Bove, Rome, Lazio, Italy Phonolite lava has small white and black phenocrysts in a fine-grained groundmass.
497stone 497 Rosso Verona, from Verona, Veneto, Italy Limestone from the Jurassic Rosso Ammonitico formation. A red nodular, micritic limestone with pervasive clay-coated solution seams.
188stone 188 Rosso venato di Terni, marmo carnagione, from the province of Terni, Umbria, Italy Marly limestone; a Cretaceous-Eocene pelagic limestone from the Scaglia Rossa Formation, the colouring constrained by microfractures to give a 'ruin marble' effect. It is mottled with the shells of planktonic microfossils, and it has prominent stylolites and en echelon sets of white calcite-filled fractures.
85stone 85 Rosso Montecitorio, rosso Kumeta, from Monte Kumeta, Province of Palermo, Sicily, Italy Pink pelagic limestone from the Rosso Ammonitico Formation (Triassic-Jurassic); a hardground with black manganese-rich crusts, a spar-infilled ammonoid, and spar-filled fractures.
517stone 517 Rosso di Terni, from Terni, Umbria, Italy Limestone. A stylolitised burrowed biomicrite crowded with planktonic forams, calcispheres and other small bioclasts.
444stone 444 Rosso di Rosaro, from Rosaro, Verona, Veneto, Italy Stylolitised nodular biomicrite; a pelagic limestone of the Jurassic Rosso Ammonitico Formation.
204stone 204 Rosso di Monte Baldo, from Monte Baldo, Verona, Veneto, Italy Limestone; a burrowed biomicrite with tiny bioclasts.
499stone 499 Rosso di Mizzole, from Mizolle, Val Pantena, Verona, Veneto, Italy Burrowed nodular fossiliferous micritic pelagic limestone with calcite/clay-lined stylolites and solution seams. It is from the Jurassic Rosso Ammonitico Formation.
179stone 179 Rosso di Malcesine, from Malcesine, Verona, Veneto, Italy Limestone. A bioturbated fossiliferous biomicrite with abundant planktonic forams and calcispheres. It has extensive development of orange-red stylolites.
465stone 465 rosso di Grezzana, rosso Verona, from Grezzana, Val Pantena, Verona, Veneto, Italy Nodular pelagic limestone from the Jurassic rosso ammonitico formation.
518stone 518 Rosso di Fuligno, from Foligno, Perugia, Umbria, Italy Calcarenite, with no obvious biogenic grains. Patchy areas of pyrite, and scattered dendrites of manganese/iron oxides are present.
274stone 274 Rosso di Castelletto di Brenzone, from Castelletto di Brenzone, Verona, Veneto, Italy Pelagic limestone from the Jurassic Rosso Ammonitico Formation. Fossiliferous micrite crowded with bioclastic debris including juvenile and adult ammonites. The aptychi of ammonites are conspicuous. Note the calcite-filled stylolites.
186stone 186 Rosso di Caprino Veronese, from Caprino Veronese, Verona, Veneto, Italy Limestone, probably of Cretaceous-Tertiary age; a burrowed nodular biomicrite crowded with skeletal grains. Note the extersitu stylolite development.
192stone 192 Rosso della Corona, probably from Monte Corona, near Umbertide, Perugia, Umbria, Italy Limestone from the Scaglia Rossa Formation (Cretaceous-Eocene). A bioturbated fossiliferous biomicrite crowded with planktonic forams. Note the salmon-pink stylolites.
197stone 197 Rosso del Ticino, from Ticino, Lombardy, Italy Ferruginous micaceous calcarenite.
389stone 389 Rosso brecciato, from Kiyi Kislacik, Milas, Mugla Province, Turkey Marble breccia; matrix-supported clasts of coarse-grained grey and finer-grained white marble. Perhaps a metamorphosed debris flow.
61stone 61 Rosso antico, from Akra Tainaron (Cape Matapan), Mani peninsula, Laconia, Peloponnese, Greece A fine-grained hematite-stained calcite marble of late Cretaceous to Eocene age. Slender black veins are evident, and trace manganese contributes to the red colouring.
62stone 62 Rosso antico, from Akra Tainaron (Cape Matapan), Mani peninsula, Laconia, Peloponnese, Greece A fine-grained hematite-stained calcite marble of late Cretaceous to Eocene age. Slender black veins are evident, and trace manganese contributes to the red colouring.
903stone 903 Rosso antico brecciato, from Kiyi Kislacik, Milas, Mugla Province, Turkey Breccia of calcite marble clasts in a hematitic matrix.
59stone 59 Rossino degli Appennini, from the Apennines, Italy. Pelagic limestone from the Scaglia Rossa Formation (Upper Cretaceous-Eocene). A bioturbated fossiliferous biomicrite crowded with planktonic forams, calcispheres, and other skeletal debris. A set of close-spaced healed fractures constrain the pink coloration, giving the effect of a pietra paesina. Stylolites are also present.
182stone 182 Rosa corallo, from Verona, Veneto, Italy; Torri del Benaco is doubtful. Limestone from the Scaglia Rossa Formation (Cretaceous-Eocene). A fossiliferous biomicrite with abundant tiny bioclasts and large intraclasts floating in matrix, probably a debris flow. Note the conspicuous stylolites.
726stone 726 Rhodonite, from Maloe Sedelnikovo, Ekaterinburg, Sverdlovsk Oblast, Russia Massive pink rhodonite, with brown bustamite and other manganese silicates. Black manganese oxides emanate from fractures.
974stone 974 Quarzo erborizzato dell'Elba, from the island of Elba, Livorno, Tuscany, Italy Calcarenite with some grey shell fragments and grains of a black mineral, perhaps schorl.
713stone 713 Quartz, only slightly amethystine, locality unknown Very coarsely granular quartz, showing iridescence due to internal flaws, and containing inclusions of small aggregates of specular hematite crystals. It is barely amethystine in colour.
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