File:Black-star-diopside-oval-18x1350mm-22ct-item080pe.jpg
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English: The Natural star diopside or Indian black star diopside is a cabochon cut gemstone featuring a blazing white four-pointed star radiating against an inky black sky. This rare beauty is frequently call the "Black Star of Indian.Orgin is Only india.Diopside surfaced around the 1800s. Its name stems from the Greek word 'di' for two and 'opsis' for vision. This opaque gem of second sight is carved with a rounded cabochon cut to accentuate its shining asterism properties. This version of diopside is typically available in a stark black but may display hints of dark forest green.
The black star diopside gemstone is formed from calcium magnesium silicate with needle-like inclusions that create the star-like effect. Indian black star diopside is unique in that its star is a four-pointed cross. It is fairly soft compared to most other gemstones with a hardness of just 5 to 6 on the Mohs scale.Star diopside has a specific gravity (density) ranging from 3.22 to 3.38 and a refractive index of 1.664 to 1.730. |
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| Source | Own work |
| Author | Ktmsgroup |
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| current | 15:48, 19 March 2018 | | 250 × 250 (9 KB) | Ktmsgroup (talk | contribs) | Cross-wiki upload from meta.wikimedia.org |
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