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Specimens of gemstones by colour: grey [gallery view]

Milky quartz — specimen 0044
Milky quartz — specimen 0475
Milky quartz — specimen 0358
Milky quartz — specimen 0282
Milky quartz — specimen 0374
Milky quartz — specimen 0704
Milky quartz — specimen 0705
Milky quartz — specimen 0042
Milky quartz — specimen 0186
Opal — specimen 0036
Opal — specimen 0080
Opal — specimen 0386
Opal — specimen 0746
Opal — specimen 0747
Opal — specimen 0748
Opal — specimen 0365
Marble — specimen 0613
Dolomite — specimen 0165
Howlite — specimen 0018
Rainbow moonstone — specimen 0571

Specimens of gemstones by colour: grey — 59
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The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.