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Hydroboracite 0.55 ct.

# 2456


183,00 €

1 left in stock

Hydroboracite 0.55 ct.

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Hydroboracite is a rare borate mineral : an Hydrated Calcium Magnesium Borate with formula: CaMgB6O11 - 6H2O and hardness of 2-3. Occur in a sliky,fibrous crystal cluster,easy to split and difficult to get big stones.Mostly a clear crystal is a needl-size,therefore due to his scarsity and difficulty in cutting and polishing is a very rare stone to find in the collectors market. The best location for colorless material is the Harz Mountains ,in Germany. Very small inclusions to eye clean. Size:10.5x4x2.7 mm. Weight: 0.55 ct. CODE# 2456