Ravenstein Gem Company

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Ural Demantoid

Faceted stones:

Photo, Video

Rough Demantoid

Stone mining

Demantoid deposits

Tagil Topazolite

Rough stones

Video

Malyshevsky Emerald

Faceted stones

Video

Malkhan Tourmaline

Rough stones

Faceted stones

Collectible specimens

Yakut Sibirlite

Rough stones

Baikal Danburite

Rough stones

Faceted

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