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Prehnite
Prehnite - Mineral Properties and Uses |
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Uses |
Prehnite uses include: ornamental material, semiprecious gem. |
Color |
white, green, gray, yellow |
Streak |
white |
Luster |
vitreous |
Diaphaneity |
transparent to translucent |
Cleavage |
basal |
Hardness |
6 - 6.5 |
Specific Gravity |
2.8 - 3.0 |
Distinguishing
Characteristics |
color, cleavage |
Crystal System |
orthorhombic |
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Beads of prehnite.
Each bead is approximately 6 millimeter across.
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A cabochon of prehnite from Brazil.
This gem is 3 carats, and approximately 10 millimeters by 8 millimeters.
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More Information About Minerals!
Mineral photographs that appear on this page with a Geology.com copyright mark are property of Geology.com and may not be used beyond our website. If you like these photos and would like to share them with others please link to this page or email its URL. The photos were taken and composed by Ann Bryant.
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