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John Betts - Fine Minerals, New York, NY  212-678-1942
Dealers of Fine Minerals and Natural Crystal Clusters since 1989.

Uncut Rough Diamonds - Diamond Crystal Clusters & Large Crystals Over 5 Carats

Below is a gallery of  uncut rough diamonds, natural crystals of genuine diamond from various countries around the world. These are real diamond that gemstones are made from - not Herkimer Diamonds that are common quartz. Many different crystal forms are available: Octahedral, Cubic, Macle Twins, Balas crystals. All diamonds are natural crystals, exactly as they occurred naturally in the Earth. No polishing, cutting or alteration of any kind. Most commonly available diamond specimens are from South Africa, Australia, and Democratic Republic of Congo. New diamonds are added frequently, check back often.

To purchase mineral specimens, go to the online order form.

Diamond (5.79 carat octahedral crystal) from Mirny, Republic of Sakha (Yakutia), Siberia, Russia
#36453, Diamond (5.79 carat octahedral crystal), Mirny, Russia (t) $1275

Diamond (9.72 carat brown macle-twin crystal) from Guinea
#39400, Diamond (9.72 carat brown macle-twin crystal), Guinea (t) $4200

Diamond (8.57 carat two intersecting macle-twin crystals) from Northern Cape Province, South Africa
#39395, Diamond (8.57 carat two intersecting macle-twin crystals), South Africa (t) $6500

Diamond (12.19 carat brown octahedral crystal) from Argyle Mine, Kimberley, Western Australia, Australia
#40804, Diamond (12.19 carat brown octahedral crystal), Argyle Mine, Australia (t) $9400

Diamond (13.12 carat dark gray interconnected crystals) from Mbuji-Mayi (Miba), Democratic Republic of the Congo (Zaire)
#39013, Diamond (13.12 carat dark gray interconnected crystals), Democratic Republic of the Congo (Zaire) (t) $1025

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See more diamonds in these galleries:

Diamond Crystals under 1 carat

Diamond Crystals 1-2 carats

Diamond Crystals under 2-5 carats

Diamond Crystal in unusual crystals and clusters

Diamond Crystals over 5 carats

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Diamonds Priced under $200

Diamonds Priced $200 -$399

Diamonds Priced $400 - $999 

Diamonds Priced $1000 and above

Gem-Grade Diamonds

Diamond Crystals for Use in Natural Diamond Jewelry

Guided Tour of the Mineral Galleries...

Diamond Crystals under 2-5 carats

Gem-Grade Diamonds

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