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ST551 - Tourmaline $ AT-AUCTION St. Anne's Mine, Miami, Karoi District, Zimbabwe small cabinet - 6.5 x 4 x 2 cm Large, deep green, transparent single Tourmaline crystal from recent production at the famous St. Anne's mine in Zimbabwe. Tourmaline has been very rare from this mine historically, which has primarily targeted blue Topaz. Most Tourmaline found here occur as small pencil-like crystals and this large crystal in an anomaly. Though dark, it is transparent facet grade green throughout with a more greenish brown color at the termination. There is a bit of edge chipping along one side, otherwise it's complete all around and perfect. Weighs a hefty 50.8 grams. With high quality Congo Tourmaline selling for $200 to $300 per gram (or much more), I value this at $40/gram, or about $2000 for the crystal. ©2010-2018 Marin Mineral |