A rare mineral, schlossmacherite occurs only in Chile and sometimes in association with ceruleite. This oval-cut cabochon looks like a robin’s egg, combining schlossmacherite’s pistachio green with ceruleite’s bright blue. 9.57 cts, 16.4 x 11.9 mm, Guanaco, Chile. © The Gem Trader. Used with permission.

Ceruleite | Blue | 9.57 ct

Ceruleite id-m-434929 - International Gem Society

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Ceruleite

A rare mineral, <a href="https://www.mindat.org/min-3568.html" data-wpel-link="external" rel="nofollow external">schlossmacherite</a> occurs only in Chile and sometimes in association with ceruleite. This oval-cut cabochon looks like a robin's egg, combining schlossmacherite's pistachio green with ceruleite's bright blue. 9.57 cts, 16.4 x 11.9 mm, Guanaco, Chile. © <a href="http://www.thegemtrader.com" data-wpel-link="external" rel="nofollow external">The Gem Trader</a>. Used with permission.

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The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as <a href="https://rockpeddler.com/product-category/instructional-materials/">Gram Faceting Designs</a>.

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Gemstone	Ceruleite
Natural or man made	Natural
Origin	Chile
Origin details	Guanaco
Carat Weight	9.57
Height	16.4
Width	11.9
Gem State	Cabochon
Color	GreenBlue,
Transparency	Opaque
Multi-color	Bi-color