Polymorphs are minerals that have the same chemical formula but differ in crystal structure and physical properties. Check out our sillimanite beads selection for the very best in unique or custom handmade pieces from our beads shops. Sillimanite is one of the most difficult gemstones to fashion. Sillimanite the fibrolite from burma and sri lanka is well known to gem collectors and highly prized because of its great scarcity. Whether you require quality beads for your own jewelry design or wholesale beads for resale our numerous gemstone.
Sale price 11 99 11 99 23 99 original price 23 99 50 off. The name of sillimanite has been named on american citizen benjamin silliman who discovered the stone. Blue and greenish gems are lovely although very difficult to cut. Sillimanite gemstone is mostly known as a catseye gem when in its fibrous massive form but beautiful clean faceted gems are also available although faceted gems are rare because clean sillimanite is scarce and difficult to cut. Faceted transparent sillimanite is especially rare but with its decent hardness it is perfectly suitable for most jewelry designs whether it is an everyday wear ring or as an occasionally worn fashion jewelry design.
Compact masses of sillimanite were once used by native americans of the american southwest as fashion tools. Like diamond topaz and fluorite sillimanite has perfect cleavage. Sillimanite beads are one of three alumino silicate polymorphs the other two being andalusite and kyanite. It has a refractive index of 1 655 to 1 684. Sillimanite has a hardness of 6 5 to 7 5 on the mohs scale and a vitreous to silky luster.
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Violet blue stones have been reported from mogok stone tract myanmar and greyish green chatoyant material is found in the sri lanka gem gravels. An interesting fact associated with sillimanite gemstone beads is that its appearance resembles to cat eye which due to its fibrous feature leaves an impression of varied colors adorned in a gemstone the stone is mainly extracted in areas with abundance of metamorphic rocks but the gemstone. Sillimanite is found in many locations worldwide but gem quality. Unique sillimanite faceted rondelle shape briolettes loose gemstone faceted sillimanite beads gemstone jewelry us 312 jewelryfindingsworld. Sillimanite occurs in a number of colors.Sillimanite is a rather rare gemstone and even rarer when it comes to jewelry. Approximately the same as that of spodumene its specific gravity is 3 23 to 3 27 placing it between apatite and diopside on the density scale. Sillimanite forms transparent rather slate blue or blue green slender poorly terminated prismatic crystals and some material is fibrous. Sillimanite is a rather rare gemstone and even rarer when it comes to jewelry. Violet blue stones have been reported from mogok stone tract myanmar and greyish green chatoyant material is found in the sri lanka gem gravels.
Sillimanite forms transparent rather slate blue or blue green slender poorly terminated prismatic crystals and some material is fibrous. Compact masses of sillimanite were once used by native americans of the american southwest as fashion tools. Sale price 11 99 11 99 23 99 original price 23 99 50 off. Polymorphs are minerals that have the same chemical formula but differ in crystal structure and physical properties.
