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Mineral,
Description
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Quantity
ordered, Carat price $U.S.
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 |
Less
100 Car.
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100-500
Car.
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500
Car. and up
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Rough
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Cut
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Forsterite,
Tanzanite look alike
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$7.00
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$6.50
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$6.00
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Alexandrite
(Chrysoberyl) image |
$3.00
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$2.50
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$2.25
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Corundum
Red Ruby |
$3.00
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$2.50
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$2.25
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Corundum
Orange-Pink Padparadshah |
$3.00
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$2.50
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$2.25
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Spinel,
Red and Pink
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$7.00
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$6.50
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$6.00
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| Mineral
Description |
 Forsterite:
Pulled boules grown by the Czochralski method,
250-300 Car. weight, sawn pieces also. Has an excellent color change
from purple in daylight to blue in incandescent light.
I.R.
- 1,635-1.67; H - 7.0; D - 3.24. Cutting
angles: Pavilion - 40°; Crown - 40°.
Alexandrite
(Chrysoberyl): Pulled boules grown by the Czochralski method,
weight 300-500 Car.5-8 mm thick slabs weighting 20-30 to 100-200 Car.
This material has an excellent color change from bluish green in daylight,
to purplish-red in incandescent light.
I.R. - 1.74; H - 8.5; D - 3.75. Cutting angles: Pavilion
- 42°; Crown - 40°.
Red
Ruby: Cylindrical boules up to 90 mm. in diameter, several kilos
weight. Excellent bright red ruby color.
I.R.-
1.75; H-9.0; D-3.9-4.0. Cutting angles: Pavilion-42°; Crown-40°.
Corundum
Padparadshah: Czochralski pulled boules up to 50 mm diameter and
up to 1000 Car. weight. Very good pinkish-orange color. I.R.- 1.75;
H-9.0; D-3.9-4.0. Cutting angles: Pavilion-42°; Crown-40°. . |
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