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Little Gems |
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Scapolite Sunstone
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Yellow Tourmaline |
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| Dravite* | |||||||||||
Colour: Brown, yellow-brown, orange-brown and reddish-brown Moh’s Hardness: 7-7.5 Refractive Index: 1.616-1.652 Critical Angle: 38.23° Specific Gravity: 3.02-3.26 Fracture: Uneven, small Conchoidal. Cleavage: None Dispersion: Medium (.017) Heat Sensitivity: Not usually a problem Dichroism: Strong (many colour variations) Birefringence (double refraction): Medium (.014-.024) Crystal structure: Hexagonal |
Important ordering information: Please note that all prices are listed in Australian dollars and includes 10% GST; for international orders you will receive a 10% discount off the item(s). I will email you a final invoice including postage and insurance which will include a PayPal link for ease of payment. If you wish to pay by check or money order please contact me to make arrangements. | ||||||||||
| Currently Available. $6 to $30/carat. |
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© T. Janstrom 2000-2007