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If anyone has done a study of the refractive indices of the magenta and chrome green vesuvianites from Jeffrey Mine, Asbestos, Quebec, it would be very nice to include that data on the vesuvianite page!! - D E Russell

I think the GIA uses idocrase, not vesuvianite-Barbra

My bad, I started the gemstone list with a combination of the books I have on hand and the stones I have in my safe. Vesuvianite was one of the latter. I've added Idocrase and moved Vesuvianite, Californite and Cyprine under it. --Africanuck 03:42, 18 January 2007 (PST)

I believe they all belong to the vesuviantite group and vesuvianite itself is a synonym for idocrase --Doos 06:50, 18 January 2007 (PST)

If you send a gem for ID to the GIA it will be ID'd as idocrase, not vesuvianite. When I was a geology student, we always used idocrase and vesuvianite rather interchangeably, with an idocrase preference. Perhaps Vesuvianite and Californite are too reminiscent of locality names. Also, it should probably be mentioned that the structure of idocrase is so similar to garnet varieties that they are occasionally indistinguishable. --Barbra 06:55, 18 January 2007 (PST)