Are dioptases mined in the india?

Asked By: Gregoria Thiel
Date created: Wed, Jun 30, 2021 3:56 PM
Best answers
Answered By: Jadyn Hill
Date created: Thu, Jul 1, 2021 4:20 AM
Comments. Dioptases usually occur as micro-crystals. Although larger crystals can be found, they rarely have large clean areas, so any faceted gems rarely weigh more than 1 or 2 carats. Perfect cleavage can also make these gems difficult to facet. However, lapidaries can cut sizable cabochons from translucent dioptase masses.
Answered By: Norwood Cummings
Date created: Thu, Jul 1, 2021 8:16 AM
These Dioptases are gemmy and lustrous, little sugary gems in their own right, and the well-formed Calcites reach up to 1.3 cm on edge. Naturally, the piece is contacted in the back, but the presentation side is excellent.
Answered By: Betsy Dach
Date created: Thu, Jul 1, 2021 1:30 PM
These Dioptases are a rich emerald green, and are some of the gemmiest Dioptase crystals I have seen. Much more so than the pics can portray, in fact. The luster on both the Dioptases and the Calcite rhombs is excellent. There are even micro crystals of olive green duftite as a bonus.
Answered By: Vince Cummings
Date created: Fri, Jul 2, 2021 5:15 AM
The mm-size Dioptases are gemmy and highly lustrous, and against the white Calcite they create a dazzling image of green gems on a pristine snow field. There is even a dusting of olive-green Duftite to add visual and mineralogical interest. This is an excellent small cab, and highly representative of this pairing.
Answered By: Sarah Kreiger
Date created: Mon, Jul 5, 2021 9:15 AM
This is the best specimen to come from the commercial mining effort completed in 2004 by John Seibel, Steve Perry and myself when I owned the mining claim. The specimen is 11.9 cm in its longest dimension, and the largest linarite is a complex crystal group approximately 4 cm in length. This one I decided to keep..
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Are oltu stones mined in the algeria?

Oltu stone, sometimes called also "Erzurum stone", is principally mined in the villages northeast of Oltu town, around Tutlu Dağı (Yasak Dağ) as well as in Alatarla, Hankaskışla and Çataksu villages. The mountainous, rough region with steep slopes is 1,600–1,800 m (5,200–5,900 ft) high.

Are oltu stones mined in the algeria?

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Are strontium titanates mined in the algeria desert?

Strontium titanate is an oxide of strontium and titanium with the chemical formula Sr Ti O 3.At room temperature, it is a centrosymmetric paraelectric material with a perovskite structure. At low temperatures it approaches a ferroelectric phase transition with a very large dielectric constant ~10 4 but remains paraelectric down to the lowest temperatures measured as a result of quantum ...

http://jewels-blog.com/are-strontium-titanates-mined-in-the-algeria-desert

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Are grandidierites mined in the belgium?

Crystal System:Orthorhombic. Named by A. Lacroix in 1902 in honor of Alfred Grandidier (20 December 1836, Paris, France - 13 September 1912, Paris, France), French explorer and naturalist. He visited Madagascar three times between 1865-1870, crossing the island three times.

Are grandidierites mined in the belgium?

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