.jpg?w=400 "Source: Christie's")
A SLICE OF RHODOCHROSITE MODERN CUTTING The slice cut thinly to be displayed when backlit, on custom...
.jpg?w=400?width=1600&quality=70 "Source: Christie's")
A SMALL GOGOTTE FORMATION FONTAINEBLEAU, FRANCE Of natural near-symmetric form, from the Oligocene...
.jpg?w=400 "Source: Christie's")
A SMALL TRICERATOPS HORN MONTANA, USA From the Hell Creek Formation, Maastrichtian, late Cretaceous...
.jpg "Source: Christie's")
A SPECIMEN OF AGATE BRAZIL The front cut and polished revealing a cartoon-like silhouette pattern...
.jpg?w=400?width=1600&quality=70 "Source: Christie's")
A SPECIMEN OF AMETHYST BRAZIL Of natural form, the multitude of naturally-terminated crystal...
.jpg?w=400?width=1600&quality=70 "Source: Christie's")
A SPECIMEN OF AZURITE AND MALACHITE CHINA Of natural form. 5 ½ x 4 ½ x 2 ½in. (14 x 11.5 x 6cm...
.jpg "Source: Christie's")
A SPECIMEN OF CALCITE ON AMETHYST URUGUAY Of natural form, the amethyst with three sceptres of...
.jpg "Source: Christie's")
A SPECIMEN OF CHALCEDONY GERMANY Of natural form, supported on custom stand. 13in. (33cm.) high...
.jpg "Source: Christie's")
A SPECIMEN OF CHRYSOCOLLA Of natural form with smooth undulating botryoidal front, supported on...
.jpg?w=400 "Source: Christie's")
A SPECIMEN OF CRYSTALLINE SULPHUR BOLIVIA The small crystals with strong yellow colour. 9 ¾ x 5 x...
.jpg?w=400?width=1600&quality=70 "Source: Christie's")
A SPECIMEN OF LABRADORITE MADAGASCAR The freeform polished on all sides, the front displaying strong...
.jpg?w=400?width=1600&quality=70 "Source: Christie's")
A SPECIMEN OF LABRADORITE MADAGASCAR The free form polished on all sides, the front entirely covered...
.jpg?w=400 "Source: Christie's")
A SPECIMEN OF LABRADORITE MADAGASCAR The free-form polished on all sides, the front showing strong...
.jpg "Source: Christie's")
A SPECIMEN OF MALACHITE KATANGA PROVINCE Left in natural, unpolished, state showing the botryoidal...
.jpg?w=400 "Source: Christie's")
A SPECIMEN OF MALACHITE KATANGA PROVINCE The freeform polished to front with cavities and natural...
.jpg "Source: Christie's")
A SPECIMEN OF MOOKAITE JASPER AUSTRALIA A freestanding tabletop specimen, cut and polished on one...
.jpg?w=400 "Source: Christie's")
A SPECIMEN OF NATIVE COPPER MICHIGAN, USA From the Keweenaw Peninsula, the specimen of dynamic...
.jpg?w=400 "Source: Christie's")
A SPECIMEN OF OBSIDIAN MEXICO The specimen cut and polished to sculptural form, on bronzed base. 21...
.jpg?w=400 "Source: Christie's")
A SPECIMEN OF ORBICULAR JASPER MADAGASCAR The front face cut and polished to reveal striated pattens...
.jpg "Source: Christie's")
A SPECIMEN OF PETRIFIED WOOD INDONESIA From the Miocene (circa 20 million years ago) the totem-like...
.jpg "Source: Christie's")
A SPECIMEN OF PYRITE SPAIN The largest crystal 2-inches with twinned growths, on custom stand. 6in...
.jpg?w=400 "Source: Christie's")
A SPECIMEN OF PYRITE PERU From the Huanzala Mine, Ancash Department, the complex of cubic crystals...
.jpg "Source: Christie's")
A SPECIMEN OF PYRITE SPAIN The crystals with twinned growths forming a natural cavity, on custom...
.jpg?w=400 "Source: Christie's")
A SPECIMEN OF ROSE QUARTZ BRAZIL Finely cut to irregular hexagonal bowl form with faceted sides. 21...
.jpg?w=400?width=1600&quality=70 "Source: Christie's")
A SPECIMEN OF SELENITE WITH APOPHYLLITE INDIA Of natural form. 4 ¼ x 3 x 5in. (10.5 x 7.5 x 13cm...
.jpg "Source: Christie's")
A SPECIMEN OF SMOKY QUARTZ BRAZIL Of natural form from the Macaco Mine, Minas Gerais, the Jacaré...
.jpg "Source: Christie's")
A SPECIMEN OF YELLOW GYPSUM RED RIVER FLOODWAY, MANITOBA, CANADA Of natural form displaying...
.jpg?w=400 "Source: Christie's")
A SPHERE OF PETRIFIED WOOD OREGON, USA The 7-inch sphere cut and polished from a fossilized...
.jpg "Source: Christie's")
A SPLIT AMETHYST GEODE PAIR RIO GRANDE DO SUL, BRAZIL Of hollow concave form, each cut and polished...
.jpg?w=400?width=1600&quality=70 "Source: Christie's")
A SPLIT AMMONITE VOLGA RIVER, RUSSIA The 12-inch specimen of Speetoniceras sp. from the Jurassic...
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