Tanzanite Color loose sale price & Tanzanite Gemstone Information
Spectacular and magnificent is the deep blue of Tanzanite, ranging from ultramarine to a light purplish blue. The most coveted colour is a blue which shows a purplish hue shimmering around it, which is extremely spectacular in sizes above ten carats. Typical for Tanzanite is the appearance of several colours in one and the same stone: depending on the perspective, thestone appears blue, purple, or dun yellow. Most rough crystals, however, show a disturbingly large proportion of brownish-yellow, but the cutter may cure this by carefully heating the stone in an oven to about 500°C. In the course of this heating , utmost concentration is demanded, for it is essential to determine the moment when the colour turns blue. Heating is therefore a treatment which is generally accepted in the trade, however, the rough stone has to be as free of inclusions as possible, as otherwise the process will lead to fissures in the stone.
Working with Tanzanites is a task which will cause even experienced cutters to tread carefully, as the cleavage of the gemstone is very high in one direction. The exclusive stone is cut in any imaginable shapes and forms, from classical round cuts to imaginative designer cuts.
Tanzanite is always fascinating because of its unusual appeal that will hold everybody in its thrall. The deep blue with the slight purple shade is one of the most extravagant colours available. It symbolises immaculate but unusual elegance. Whoever purchases such a unique gemstone wants to be set apart from the masses. Wearing it communicates self-confidence and individuality. The almost magical colour of a perfectly cut Tanzanite is not only attractive on young women, it also emphasises the individuality of a mature woman.
For Tanzanites in especially good qualities and larger sizes almost any price will be paid by now. What is it that makes this stone so coveted? Is it only the spectacular colour? Well, it seems we must also take the exclusive origin into account here. As the stone is found on one special location only in all the world, it is especially valuable. After all, the desire to own something unique and rare has always been a decisive criterion for assessing the value of special gemstones.
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 NaturalHistoryMuseum in Washington, DC., USA.
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Swiss Gem Shop loose Gemstone at Sale price and Gemstone Information