1 1 1 1 1 Rating 0.00 (0 Votes)

»Lavender Jade« from Turkey

Lavendeljade (Jadeit - Metagranitoid), Türkei

»Lavender-Jade« (Jadeite - Metagranitoide), Turkey

Foto: K. Sieber, www.makrogalerie.de

The world-famous deposit for this lilac-colored rock is located near Harmancik, about 90 km south of Bursa in Turkey. The deposit covers an approx. 400m thick jadeite-bearing metamorphous rock embedded between mica schists and marbles. It was formed about 80 million years ago from an originally granitic rock (granitoid) by high-pressure metamorphism. The resulting metagranitoid rock consists of quartz, chlororitoid, lawsonite, glaucophane and phengite as well as up to 50% jadeite.

Jadeite occurs in this rock not only in the violet color of »Lavender Jade«. To a small extent you can find it there also in grey, white and green. The violet color variety developed during the metamorphosis process by the circulation of manganese-containing aqueous solutions.

Imitations

Recently the EPI laboratory received violet, translucent tumbled stones for gemmological testing traded as »Lavender Jade«. Our examination reveiled that the sample consists of the mineral Hydrofluorite. Unlike the common »Lavender Jade« rock from Turkey, Hydrofluorite is relatively soft, translucent with fibrous structure.

Before buying violet »Jade« we strongly recommend gemological testing.

Ref.:
DIGENNARO, M.A., TROSSARELLI, C., RINAUDO, C. (1997): Characterisation of violet jade from Turkey, Z. Dt. Gemmol. Ges. 46, 3, 169-174.