Sugilite & Whitby Jet

Sugilite (also known as luvulite) is a relatively rare pink to purple cyclosilicate mineral named by the Japanese geologist who discovered the first specimens in 1944, Ken-ichi Sugi. . It has the complex chemical formula: KNa2(Fe,Mn,Al)2Li3Si12O30. The crystals are rarely found and the form is usually massive. The polished stones are mostly opaque with an almost waxy luster and a deep purple colour. It occurs on the Iwagi Islet, Japan where it is found in an aegirine syenite intrusive rock and is found in a similar environment at Mont Saint-Hilaire, Quebec, Canada. In the Wessels mine in northern Cape Province of South Africa sugilite is mined from a strata-bound manganese deposit. It is also reported from Liguria and Tuscany, Italy; New South Wales, Australia; and Madhya Pradesh, India.

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