Automorphous phenacite crystals in a synthetic emerald
Micrographs

Automorphous phenacite crystals in a synthetic emerald

Group of automorphous phenacite (Be2SiO4) crystals in a synthetic emerald produced by anhydrous dissolution. The presence of phenacite in synthetic emeralds is typical. This inclusion is also found in synthetic hydrothermal emeralds (i.e. Biron), frequently associated with water-bearing cavities. Although phenacite is present in some emerald deposits, its presence as an inclusion in natural emeralds is rare.

ūüĒ¨¬†Micrograph: F. Notari.

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