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Quartz, var. Herkimer Diamond
Quartz, var. Herkimer Diamond
Ace of Diamonds Mine, Herkimer County, New York
Olmiite on matrix
Olmiite on matrix
N Chwanning II Mine, Kuruman, Republic of South Africa
Opal (polished)
Opal (polished)
Jalisco, Mexico
Quartz "Faden"
Quartz "Faden"
Dara Ismael Khan District, Waziristan, Pakistan
Spinel (rough and cut)
Spinel (rough and cut)
Mogok, Sagaing District, Mandalay Division, Burma (Myanmar)
Zoisite Var. Tanzanite
Zoisite Var. Tanzanite
Merelani Mine, Lelatema Mountains, Arusha Region, Tanzania
Tourmaline Var. Tri-Color Elbaite

Tourmaline Var. Tri-Color Elbaite

sold
Locality
Sapo mine, Goibiera, Minas Gerais, Brazil
Minerals
Elbaite
Dimensions
7.4 x 3.3 x 2.7
Size class
Small Cabinet
SID
TOURM50

These elusive tourmalines were mined around 1996. Known as tri-color blue caps, the best examples start red, then go to yellow and finally a blue termination. Typical examples are currently worth in excess of $50 per gram. This crystal is a weird example as it exploded, and split while in the pocket and continued to terminate. I have seen this before while mining Quartz and good examples are quite uncommon. It is a floater, as even the base is crystallized. It has multiple terminations, It has about 12 spire-like terminations, of those about 7 are complete. It has good color and is highly reflective. It weighs 65 grams!

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