| There are many fine gemstones which didn't make our short list, including ruby, zircon, topaz, emerald and tanzanite. |
| Some say that tanzanite, the blue variety of zoisite, is what set off the gem rush in East Africa, although Madagascar was producing other fine gems at the time. |
| The blue shades are sapphires set in white gold, or, more dramatically, as flowers of tanzanite and lapis lazuli with snow-white pistils. |
| One American dealer reports difficulty getting hold of tanzanite, a blue semi-precious stone. |
| The chain was silver and the pendant was made of ruby and specks of tanzanite were embedded in the crystal's casing. |
| Mr Bridges also pioneered the deep-blue gemstone tanzanite on the international jewellery market. |
