Emerald Trailer / new- 9.74 g - (1)

Emerald Pendant / new Set in 925 sterling silver Weight: 9.74 g !!! (weighed without the leather cord) 28.3 mm x 18.7 mm x 8.8 mm New and unworn Includes leather cord Emerald is a dark- to light-green variety of the silicate mineral beryl with the chemical composition Al2Be3[Si6O18]. The color of emerald, whose range extends from a dark blue-green to a light yellow-green, is caused by small impurities of chromium (Cr3+) and vanadium ions (V3+). Like the pure mineral beryl, emerald crystallizes in the hexagonal crystal system and typically develops hexagonal, prismatic to columnar crystals with a glassy luster on the surfaces. Its Mohs hardness of 7.5 to 8 is comparable to that of beryl. Shipping as insured registered mail

估價:$11.15

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