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SILLIMANITE GEMSTONES

Sillimanite, Al2SiO5, Aluminum Silicate, is a polymorph with two other minerals, kyanite and andalusite.  A polymorph is a mineral that shares the same chemistry but a different crystal structure with another, or other, minerals. Sillimanites crystal system is orthorhombic. Sillimanite is a rare gemstone that is not frequently seen in faceted form.  The crystals are found in shades of brown, white and green.  Generally, only the rare, prismatic transparent crystals are cut as gemstones.  The refractive index is 1.654-1.683.  Sillimanite gemstones have a hardness of 7.5 on the mohs scale, making Sillimanite gemstones very wearable in jewelry. We have the following loose faceted sillimanite gemstones in stock.

Click on any image to enlarge.

ITEM # SIZE SHAPE COLOR & GRADE WEIGHT PRICE PER CARAT ITEM PRICE


OVAL



709 sillimanite
 8.5x7.0mm
 Oval
 Clear AA
1.78 cts.
 $32.00
 $56.96
715 sillimanite
 8.7x7.4mm
 Oval
 Clear AAA
 2.15 cts.
 $38.00
 $81.70
708 sillimanite
 8.8x7.2mm
 Oval
 Clear A+
 1.70 cts.
 $20.00
 $34.00
717 sillimanite
 8.8x7.4mm
 Oval
 ClearAAA
 1.70 cts/
 $38.00
 $64.60
701 sillimanite
 9x7.3mm
 Oval
 Clear AA
 1.65 cts.
 $32.00
 $52.80
713 sillimanite
 9.5x7.7mm
 Oval
 Clear AAA
 1.95 cts.
 $38.00
 $74.10
718 sillimanite
 10.3x8.1mm
 Oval
 ClearB+
 1.90 cts.
 $12.00
 $22.80
712 sillimanite
 10.4x8.3mm
 Oval
 Clear AAA
 2.40 cts.
 $38.00
 $91.20 
711 sillimanite
 10.5x8.5mm
 Oval
 Clear AA
 2.85 cts.
 $32.00
 $91.20
704 sillimanite
 10.6x8.5mm
 Oval
 Clear A
 2.50 cts.
 $18.00
 $45.00
714 sillimanite
 11x8.5mm
 Oval
 Clear AA
 3.00 cts.
 $32.00
 $96.00
710 sillimanite
 11x9mm
 Oval
 Clear A-
 3.05 cts.
 $16.00
 $48.80
716 sillimanite
 11.3x9mm
 Oval
 Clear A+
 3.20 cts.
 $20.00
 $64.00
706 sillimanite
 13.4x10.9mm
 Oval
 Clear AAA
 4.80 cts.
 $38.00
 $182.40


EMERALD CUT



707 sillimanite
 8.7x6.8mm
 Emerald Cut
 Clear AAA
 2.20 cts.
 $38.00
 $83.60
702 sillimanite
 11x7mm
 Emerald Cut
 Clear A+
 1.80 cts.
 20.00
 $36.00
705 sillimanite   
12.8x9.8mm
 Emerald Cut
 Clear A+
 6.00 cts.
 $20.00
 $120.00

For more information, e-mail us at THE BRAZILIAN CONNECTION
or  call us at  828-837-6860  or cell#  570-441-1512