Black Tourmaline price per carat usually ranges between Rs 150 per carat ($3 approx.) to Rs 400 per carat ($6. approx.)
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It’s seldom used as a gem, which makes Australian black tourmaline very rare and exceptional. Like all tourmaline, black tourmaline is quite hard (7 to 7.5 on the Mohs scale), which also makes it a very durable gemstone.
Black tourmaline is incredibly hard. Try doing a scratch test if you aren’t sure that your stone is tourmaline. A very sharp needle will be able to scratch hard plastic, but not tourmaline. If the needle easily leaves a mark on the stone, it is unlikely that the stone is real black tourmaline.
Prices of tourmalines are generally under $500 per carat but in the case of Paraiba can reach $50000 per carat. Where is Tourmaline found? Tourmaline can be found all around the world.
Is black tourmaline magnetic? The answer is yes! It has a higher magnetic susceptibility than other tourmaline. Black tourmaline has a high output of negative ions, alpha waves and far infrared rays, making it the highest energy crystal in the world.
Gem and specimen tourmaline is mined chiefly in Brazil and many parts of Africa, including Tanzania, Nigeria, Kenya, Madagascar, Mozambique, Malawi, and Namibia.
First, Tourmaline sits moderately high on its level of durability. On the hardness scale, Tourmaline ranges from 7.0 – 7.5, making it scratch resistant to matters that fall at a lower number than 7. … If you’re well versed in testing specific gravity, the specific gravity of Tourmaline is 3.06.
They are rare and much sought-after. Green tourmalines are very popular as precious stones among women, but many men like wearing them too.
Affordability. Pink Sapphire: Heirloom-quality stones are quite expensive. Pink Tourmaline: Fairly large-sized stones of pink tourmaline are comparatively very affordable.
The value of Tourmaline has a very large range. The more common forms can be fairly inexpensive, but the rarer and more exotic colors can command very high prices. The most expensive and valuable form of Tourmaline is the rare neon-blue form known by the trade name Paraiba Tourmaline.
Despite the occasional color similarities, one key difference is that black tourmaline has more water content than onyx, which means it is softer, but only slightly. On the other hand, onyx is denser and heavier than black tourmaline, making it much more robust against physical damage from daily wear-and-tear.
The black onyx is more valuable than the other colors of onyx available, too. Black onyx can vary in value from $1 to $500 per carat on its own. That varies with the setting of the gemstone itself.
A tourmaline is a semi-precious gemstone that comes in more colors and color combination than any other gemstone, staying true to its name, which comes from the Sinhalese word “turmali,” meaning “mixed.” Due to the wide range of colors, tourmalines are often mistaken for many other gemstones.
As nouns the difference between tourmaline and garnet
is that tourmaline is a complex black or dark coloured borosilicate mineral while garnet is (mineral) a hard transparent mineral that is often used as gemstones and abrasives or garnet can be (nautical) a tackle for hoisting cargo in or out.
Most colors are fairly common, but pure blue, red, orange, yellow, and purple stones are rare. Such stones usually command higher prices. Color-change tourmalines are also exceptionally rare. Neon-blue paraíba tourmalines, raspberry-red rubellites, and emerald-green chrome tourmalines are especially prized.
Pink tourmaline can be found throughout the world. Rich deposits have been mined in the United States, Brazil, Nigeria, Mozambique, Madagascar, Afghanistan, and Namibia. But the finest quality stones are to be found in the Muzo mines of Brazil and in Namibia. … Truly fine quality tourmaline gems are rare and expensive.
The rare Paraiba tourmaline is the most expensive and a high-quality carat begins at about $2000. Some Paraiba tourmaline carats have reportedly fetched $60,000 per carat, which is much more than diamonds.
Usually, iron-rich tourmalines are black to bluish-black to deep brown, while magnesium-rich varieties are brown to yellow, and lithium-rich tourmalines are almost any color: blue, green, red, yellow, pink, etc. Rarely, it is colorless.
|4||Fluorite [Example: A knife will scratch it]|
|3||Calcite [Example: A copper coin will scratch it]|
|1||Talc [Example: A fingernail will scratch it]|
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