This is the latest Off The Dop Project.
An Oregon Sunstone from Jim Allen, Sunstone Mine Owner of
who recently sent Matt at huge Sunstone that cut a large 13.67ct. stone. This stone measures 16.44mm round.
The stone is cut in a "Split Mains Brilliant" that makes this gemstone come alive!
A Sunstone is only found in Oregon, USA. The colors range from clear, straw, yellow, golden, green, pink, blue, and red, bi-colors and tri-colors.
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| Sunstone flashes white, yellow, straw & golden |
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| Photo taken with Reval Bulb. |
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| The shiller in the stone adds to the stones beauty. |
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| Cuts and Polishes very well. |
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| Mohs Hardness is 6. |
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| Here you can really see the reflected patterns made by the shiller in the stone. |
When cutting Sunstone, because of it's refractive index, a main pavilion angle of between 42* & 43* is required. Typically, the shiller, if any exists, should be oriented perpendicular to the table of the stone. Polishes very well with Cerium Oxide (I used a cerium oxide pol-a-gem lap).
I have enjoyed this project and thank Jim Allen for the opportunity to cut this large stone.
-Matt
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| Bi-color Red & Green Sunstone |
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| Red Sunstone in an Emerald Cut |
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