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. Check out our sillimanite beads selection for the very best in unique or custom handmade pieces from our beads shops. Historically sillimanite is a rare gemstone known mainly to collectors. 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.
Sillimanite occurs in a number of colors. It has a refractive index of 1 655 to 1 684. Sillimanite beads are one of three alumino silicate polymorphs the other two being andalusite and kyanite. Sillimanite is one of the most difficult gemstones to fashion. Blue and greenish gems are lovely although very difficult to cut.
Unique sillimanite faceted rondelle shape briolettes loose gemstone faceted sillimanite beads gemstone jewelry us 312 jewelryfindingsworld. 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. Like diamond topaz and fluorite sillimanite has perfect cleavage. Sillimanite has a hardness of 6 5 to 7 5 on the mohs scale and a vitreous to silky luster.
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Sillimanite is considered to stimulate the production of endorphins in the human body. Polymorphs are minerals that have the same chemical formula but differ in crystal structure and physical properties. Sale price 11 99 11 99 23 99 original price 23 99 50 off. Compact masses of sillimanite were once used by native americans of the american southwest as fashion tools. Sillimanite is the rarest of the three trimorphs.The name of sillimanite has been named on american citizen benjamin silliman who discovered the stone. 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 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. The name of sillimanite has been named on american citizen benjamin silliman who discovered the stone. Sillimanite is considered to stimulate the production of endorphins in the human body.
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. 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.