purple and blue. Its value is determined by rarity - the finer the colour or clarity, the higher the price. Tanzanite can only be found in northern Tanzania Mr Laizer mined the stones, weighing 9 ...

You’re looking at a gorgeous Tanzanite Blue II Metallic ($1,950 option) M4 Competition model, which has been bathed in M Performance parts for as exotic a look as you can get in a BMW 4 Series.

The showstopper in question: a Pomellato necklace featuring a 55.96 carat tanzanite stone, set in a bespoke bezel at the base ...

TanzaniteOne mines, cuts, polishes and sells tanzanite, which is a rare blue to violet-blue stone found only in a site in Tanzania. In geological terms tanzanite is said to be 1 000 times rarer ...