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![Natural History - Mixed Mineral Specimen Collection [20].: Comprising: popcorn quartz, amethyst, agate, smoky quartz, brown obsidian, citrine, pyrite, 'desert rose', and others. 823 grams total, 23-81 mm (7/8 - 3 1/8 in.). Ex Mineral Imports, London, UK.Grego](https://p1.liveauctioneers.com/1191/317892/170615921_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Mixed Mineral Specimen Collection [30].: Comprising: rhododendrite, quartz, amethyst, pyrite, jasper, Icelandic spar, agate, calcite, and others. 564 grams total, 14-60 mm (1/2 - 2 3/8 in.). Ex Mineral Imports, London, UK.Gregory, Bottley &](https://p1.liveauctioneers.com/1191/317892/170615824_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Grade A Cut and Polished Agate Slice Collection [3].: Comprising three transparent slices showing attractive banding. 286 grams total, 9-14 cm (3 1/2 - 5 1/2 in.). Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [3, No Reserve]](https://p1.liveauctioneers.com/1191/317892/170615955_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Grade A Cut and Polished Agate Slice Collection with 'Eyes' [4].: Comprising three examples with mainly orange and grey banding, one with grey and light brown banding; each example with a number of attractive eye-shaped formations. 466 grams total, 11.5- 11.8 cm (4](https://p1.liveauctioneers.com/1191/317892/170615831_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Grade A Cut and Polished Agate Slice Collection [3].: In enhanced purple and blue colour. 376 grams total, 11.5-14.5 cm (4 1/2 - 5 3/4 in.). Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [3, No Reserve]](https://p1.liveauctioneers.com/1191/317892/170615749_1_x.jpg?height=310&quality=70&version=1706617191)
![Natural History - Grade A Cut and Polished Agate Slice Collection [3].: In enhanced dark blue colour. 249 grams total, 11-14.5 cm (4 3/8 - 5 3/4 in.). Ex Mineral Imports, London, UK.Gregory, Bottley & Lloyd (Gregory's). [3, No Reserve]](https://p1.liveauctioneers.com/1191/317894/170617149_1_x.jpg?height=310&quality=70&version=1706620797)
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