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Obsidian Gemstone Bead, 3mm Faceted Rondelle - Special Purchase (strand)

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$18.00
SKU:
21-903-120
Current Stock:
$18.00

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Obsidian Gemstone Bead, 3mm Faceted Rondelle - Special Purchase (strand)
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Description

Obsidian (pronounced ub-SIH-dee-in) is a natural glass that forms from volcanic activity. The gemstone is made of the same minerals as granite, but cooled so quickly that the minerals did not have time to crystallize. Obsidian is somewhat fragile, and is only slightly harder than window glass. It scratches easily and sharp blows can crack it. Do the lack of crystalline structure, it fractures in sharp curves, hence obsidian was used to make sharp tools as early as 21,000 B.C.

Clear obsidian contains very few opaque impurities or microscopic mineral crystals. Other colors generally result from tiny crystals of feldspar, or inclusions of iron oxide or a wide variety of other minerals that may be present in volcanic flows.


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Details

Sold by:
strand
Material Family:
Gemstone
Unit:
strands
Size:
3mm
Color Family:
Blacks
Additional Info:
165-195 beads, 16
Country of Origin:
China
Style:
Faceted
Gemstone:
Obsidian
Hole Size:
0.5-1.5mm
Shape:
Rondelle
Material:
Obsidian
Size Group:
3mm
Color Family:
Clear
Color Family:
Grays

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