![Natural History - Cut and Polished Malachite Specimen Group [20].: Each with one polished face to display the internal contrasting banding. 308 grams total, 22-43 mm (7/8 - 1 5/8 in.). From the People's Democratic Republic of Congo.Ex Mineral Imports, London, UK.Greg](https://p1.liveauctioneers.com/1191/317892/170615822_1_x.jpg?height=310&quality=70&version=1706617191)
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“congo OR cut OR and OR polished OR malachite OR mineral OR specimen OR group”
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![Natural History - Boxed Cut and Polished Chiastolite Mineral Specimen Group [7].: Comprising seven specimens with black inclusions of graphite; in labelled specimen trays. 140 grams total, 21-31 mm (3/4 - 1 1/4 in.). From China.Ex Mineral Imports, London, UK.Gregory, Bottley & Lloy](https://p1.liveauctioneers.com/1191/317892/170615850_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Aquamarine Topaz Mineral Specimen Group [20].: Comprising a selection of pebbles and cut sections, one with a polished face showing internal iridescence and refraction. 690 grams total, 17-63 mm (5/8 - 2 1/2 in.). Ex Mineral Imports, London, UK.Gr](https://p1.liveauctioneers.com/1191/317894/170617157_1_x.jpg?height=310&quality=70&version=1706620797)
![Natural History - Boxed Polished Quartz Rock Crystal Specimen Group [10].: Comprising ten cut sections of large translucent crystals, each in a labelled cardboard box. 614 grams total, 40-45 mm (1 1/2 - 1 3/4 in.). From Brazil.Ex Mineral Imports, London, UK.Gregory, Bottley](https://p1.liveauctioneers.com/1191/317892/170615781_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Polished Green Malachite Section Group [20].: Each with at least one polished face to reveal the attractive banding; some pierced for threading. 244 grams total, 17-46 mm (5/8 - 1 3/4 in.). From Democratic Republic of the Congo.Ex Mineral Imports](https://p1.liveauctioneers.com/1191/317892/170615771_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Cut and Polished Agate Crystal Geode End Group [4].: Comprising four specimens, each polished to reveal internal structure. 866 grams total, 9.5 - 11.5 cm (3 3/4 - 4 1/2 in.). From Brazil.Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory'](https://p1.liveauctioneers.com/1191/317894/170617182_1_x.jpg?height=310&quality=70&version=1706620797)
![Natural History - Mixed Polished Mineral Specimen Pebble Group [100].: Comprising: haematite, quartz, amethyst, aventurine, agate, dalmatian jasper and others. 793 grams total, 18-33 mm (3/4 - 1 1/4 in.). Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's](https://p1.liveauctioneers.com/1191/317892/170615905_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Polished Mineral Specimen 'Pebble' Group [100].: Comprising: amethyst, agate, quartz, jasper, leopard jasper, haematite and others. 599 grams total, 20-40 mm (3/4 - 1 1/2 in.). Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [10](https://p1.liveauctioneers.com/1191/317894/170617159_1_x.jpg?height=310&quality=70&version=1706620797)
![Natural History - Mixed Cut and Polished Mineral Gaming Token Group [50].: Each cut and polished to a wedge shape, comprising: agate, jasper, tiger's eye, rhodonite, and others. 430 grams total, 36-43 mm (1 3/8 - 1 5/8 in.). Ex Mineral Imports, London, UK.Gregory, Bottley &](https://p1.liveauctioneers.com/1191/317892/170615893_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Boxed Selenite Mineral Specimen Group [10].: Comprising ten cut wand sections showing typical bifringence; each in a cardboard specimen box. 174 grams total, 23-33 mm (7/8 - 1 1/4 in.). Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gr](https://p1.liveauctioneers.com/1191/317892/170615796_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Large Icelandic Spar Specimen Group [20].: Or optical calcite, cut into parallelepiped sections, each displaying typical birefringence. 1 kg total, 36-44 mm (1 3/8 - 1 3/4 in.). From Brazil.Ex Mineral Imports, London, UK.Gregory, Bottley & Llo](https://p1.liveauctioneers.com/1191/317892/170615917_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Black Obsidian 'Volcanic Glass' Specimen Group [100].: Comprising a large quantity of cut specimens of various sizes and shapes. 1.1 kg total, 26-61 mm (1 - 2 3/8 in.). Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [100, No Reserve]](https://p1.liveauctioneers.com/1191/317892/170615818_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Brown Obsidian Natural Glass Specimen Group [100].: Comprising cut dark brown to black samples. 878 grams total, 22-46 mm (3/4 - 1 3/4 in.). Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [100, No Reserve]](https://p1.liveauctioneers.com/1191/317892/170615753_1_x.jpg?height=310&quality=70&version=1706617191)
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