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Gems and Minerals of Old Burma / Sillimanite var. Blue-Grey Fibrolite

Lot 2019
Sillimanite var. Blue-Grey Fibrolite
10 – 20 May 2022, 12:00 PDT
Online, Los Angeles

Sold for US$956.25 inc. premium

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Sillimanite var. Blue-Grey Fibrolite

Mogok, Burma
A large number of minerals are found in the alluvium of this region: scapolite, adularia, moonstone, chrysoberyl, iolite, quartz and sillimanite var. fibrolite. Named after Benjamin Silliman, a mineralogist from Yale University--fibrolite is a fibrous variety of this mineral, yet in this case this is a gem version with high clarity. Fibrolites with a weight of over 5 carats are rare. The present stone has been faceted as an attractive cushion-shaped stone of blue-grey hue with an excellent face-up appeal and clarity. With a hardness of 6.5 to 7.5 it is suitable for mounting in jewelry. Weighing approximately 5.13 carats and measuring 11.4 x 9.7 x 6.3mm


Provenance: Ex. Bill Larson Collection, Fallbrook, California

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