See the main tourmaline gem listing for the properties of. They have a high birefringence of 0 013 to 0 024 so you ll almost always see doubling with your loupe. They have a refractive index ri of 1 603 to 1 655 and specific gravity sg of 2 84 to 3 10. For the vast majority of gemstones the price is calculated. It varies from bright to deep nuances and usually is quite saturated and vivid in color.
Red being represented as the big three color in the gemstone industry is a great alternative for ruby and highly sought after designer and collectors alike. Most gemstones are priced according to their weight which is given in carat. Average retail prices sep 2020 tourmaline is a widely popular gemstone that can be found in most gemstone stores and boutiques across the world in fact tourmaline is not a single mineral but a group of boron silicate minerals that vary in chemical structure. This is a tougher question as it really depends on the color and clarity of the gemstone. Paraíbas are elbaite tourmalines colored by copper except of course liddicoatite specimens.
The most expensive variety of tourmaline the beautiful rare paraiba tourmaline can fetch 10 000 per carat and upwards depending on size and color saturation whilst smaller yellows may only command 50 per carat. Tourmaline price per carat. Paraiba tourmaline mozambique cuprian elbaite si vvs type ii 2 000 to 15 000 per carat. Color and clarity have an enormous affect on paraiba prices. One may find a slight difference in green tourmaline stone price in other countries like u s a uk or uae due to the variation in supply demand equation.
RELATED ARTICLE :
With so many colors available in tourmaline you can find it at 50 a carat or more rare tourmaline can fetch up to 10 000 per carat. Pricing of tourmaline is reliant on the color you are buying. Rubellite is distinguished from other tourmaline due to its intense color and though generally it is included clean stone are considered an exception and demand premium price. But paraiba tourmaline is so scarce that prices are difficult to define. Note green tourmaline price in india usually falls between rs 450 per carat 7 approx to rs 2 000 per carat 30 approx and above.The exceptions are some gemstone carvings and gemstone cabochons as well as gemstone beads which are sometimes sold by the piece rather than by the carat since the work required to produce them exceeds the cost of the material. Clean stones withs vivid color can easily command prices well over 5000 per carat with mozambique stones usually less. The exceptions are some gemstone carvings and gemstone cabochons as well as gemstone beads which are sometimes sold by the piece rather than by the carat since the work required to produce them exceeds the cost of the material. With so many colors available in tourmaline you can find it at 50 a carat or more rare tourmaline can fetch up to 10 000 per carat. The most expensive variety of tourmaline the beautiful rare paraiba tourmaline can fetch 10 000 per carat and upwards depending on size and color saturation whilst smaller yellows may only command 50 per carat.
Clean stones withs vivid color can easily command prices well over 5000 per carat with mozambique stones usually less. Red being represented as the big three color in the gemstone industry is a great alternative for ruby and highly sought after designer and collectors alike. See the main tourmaline gem listing for the properties of.
