Tanzanite
I've always been a real fan of Tanzanite. As there are very few gems that display such a vibrant blue colour. But did you know that tanzanite is in actual fact blue zoisite. Tiffany's and Co. first started calling this gemstone Tanzanite, as they thought it would make it easier for them to market. They were absolutely right, Tanzanite is now the highest selling blue gemstone after Sapphire.
The first commercial deposits of Tanzanite were discovered as recently as 1960, in the foothills of Mount Kilimanjaro, Tanzania. Deposits were found over a minute 8 kilometre area. It's meteoric rise to success sees these deposits depleting rapidly, hence the exponential rise in price in recent years.
Small traces of vanadium within the mineral structure are what gives Tanzanite it's blue colour. The pleochroic nature of Tanzanite means that it's colour can change depending on which angle it is viewed from. Some specimens can appear to be blue from one angle, and violet to red from another.
Tanzanite 12x8mm Oval Loose Gemstone Cabochon
Ref:21018 Tanzanite12x8mm Oval Loose Gemstone Cabochon4.5mm profile5 ct/1.0 g..
£29.90
Tanzanite 12x8mm Oval Loose Gemstone Cabochon
Ref:23857 Tanzanite12x8mm Oval Loose Gemstone Cabochon4mm profile3.5 ct/0.7 g..
£22.00
Tanzanite 15x13mm Oval Cabochon
Tanzanite 15x13mm Oval Loose Gemstone Cabochon 8.5 mm profile 17 ct/ 3.4 g ..
£45.25
Tanzanite 17x13mm Oval Cabochon
Tanzanite 17x13mm Oval Loose Gemstone Cabochon 7.5 mm profile 17.5 ct/ 3.5 g ..
£46.50
Tanzanite 18x14mm Oval Cabochon
Tanzanite18x14mm Oval Loose Gemstone Cabochon8.5mm profile18.5 ct/3.7 g..
£49.25
Tanzanite 19x15mm Oval Cabochon
Tanzanite19x15mm Oval Loose Gemstone Cabochon9.5mm profile23.5 ct/4.7 g..
£62.50
Tanzanite Oval Cabochon
Tanzanite17x13mm Oval Loose Gemstone Cabochon8.5mm profile18.5 ct/ 3.7 g..
£49.25
Tanzanite 4mm Round Faceted Gemstone
Tanzanite (A grade)4mm Round Faceted Loose Gemstone 2.3mm profile, approx 0.25 ct / 0.05 g..
£19.99
Tanzanite 4mm Round Faceted Gemstone Pair
Tanzanite (A grade)4mm Round Faceted Loose Gemstone Pair2.3mm profile, approx 0.50 ct / 0.10 g,..
£37.99
Tanzanite 4mm Round Faceted Gemstone x 3
Tanzanite (A grade)4mm Round Faceted Loose Gemstone x 32.3mm profile, approx 0.75 ct / 0.15 g, ..
£54.00
Tanzanite 4mm Round Faceted Gemstone x 4
Tanzanite (A grade)4mm Round Faceted Loose Gemstone x 42.3mm profile, approx. 1.00 ct / 0.20 g,..
£68.00
Tanzanite 4mm Round Faceted Gemstone x 6
Tanzanite (A grade)4mm Round Faceted Loose Gemstone x 62.3mm profile, approx. 1.50 ct / 0.30 g,..
£90.00
Tanzanite 4x3mm Drop Cut Faceted Gemstones x 4
Tanzanite 4x3mm Drop Cut Faceted Loose Gemstone x 4 1.5 mm profile approx. 0.5 ct / 0..
£9.99