| The Very Highest Quality Tanzanite Jewellery... |
| Tanzanite | |
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Colour:
Usually blue, lilac blue, or deep
violet blue, but other colours are possible including green, yellow,
pink, brown and khaki. These colours and also paler blue stones are often
heat treated to produce the preferred deep blue colour. Tanzanite is
slightly fragile, and can fracture badly, ultrasonic cleaning should be
avoided, but otherwise it is very suitable for jewellery, being a very
beautiful stone, similar to sapphire. Famous examples: A specimen named
"The Midnight Blue", of 122.7 carats is located at the Natural History
Museum in Washington, DC., USA.
| Chemical Composition and Name | Ca2Al2(AlOH)(SiO4)3 - Hydrous Calcium Aluminium Silicate |
| Hardness | 6.5 |
| Refractive Index | 1.692 to 1.700 |
| Specific Gravity | 3.35 |
| Crystalline System | Rhombic |
Tanzanites for Sale
Coming soon - page of loose tanzanites in stock at very competitive prices.
| ...at the Lowest Possible Price |
|
32 - 36 Harrowside, Blackpool, Lancashire, FY4 1RJ, England. Telephone (44) - (0) 1253 - 343081 ; Fax 408058; E-mail: The URL for our main page is: https://24carat.co.uk | Chard(1964) Ltd |