Gel Sugilite Translucent Untreated Gemstone Carving. This stone contains 40 % gel Sugilite. First photo with direct lighting, second with back lighting. Size : 23.2 x 3.1 x 24.9 mm Weight : 15.8 ct.
The pictures are taken with daylight lamps and the colours tend sligthly towards blue/more purple in natural sunlight. Examination of jewelry-quality sugilite shows that it consists of manganese-bearing sugilite and other minerals in a polycrystalline aggregate. The material occurs in a large stratiform manganese orebody at the Wessels mine near Kuruman, South Africa.Some 12 to 15 tons of sugilite of varying quality are estimated to occur at the mine. The attractive purple color is due to the presence of about 1-3 wt. The research reported here revealed that there are actually two types of gem materials that have heretofore been called sugilite: one that is predominantly manganoan sugilite with minor impurity minerals, and the other that is chalcedony mixed with (and colored by) sugilite. Thls particular color of sugilite. Which originates from the Kalahari Manganese Mines. Area of South Africa, is relatively. New to the gem market. Marketed under the trade names. Royal Azel and Royal Lavulite. Sugilite from Wessels Mine in Northern Cape Province. Hexagonal dihexagonal dipyramidal H-M symbol. (6/m 2/m 2/m) Space group. A = 10 Å, c = 14 Å; Z=2. Light brownish-yellow, purple, violet, reddish violet, pale pink, colorless. Prismatic crystals, typically granular to massive. , also known as lavulite , is a relatively rare pink to purple cyclosilicate. Mineral with the complex chemical formula K. Sugilite crystallizes in the hexagonal.
The crystals are rarely found and the form is usually massive. It has a Mohs hardness. Of 5.5 to 6.5 and a specific gravity.
Of 2.75 to 2.80. Sugilite was first described in 1944 by the Japanese.
(19011948) for an occurrence on Iwagi Islet, Japan. Where it is found in an aegirine. It is found in a similar environment at Mont Saint-Hilaire. In the Wessels mine in Northern Cape Province. Sugilite is mined from a strata-bound.
It is also reported from Liguria. Note: The mineral is commonly pronounced with a soft "g", as in "ginger". However, as with most minerals, its pronunciation is intended to be the same as the person it is named after; in this case, the Japanese name Sugi has a hard "g", as in "geese". Purple sugilite on a matrix of baryte. Crystals, Wessels Mine in Northern Cape Province, South Africa, size: 2.4 x 2.1 x 1.2 cm.
The item "Sugilite Gel Translucent Untreated Gemstone Carving 1990´s Rough Sugilith 13 ct" is in sale since Saturday, August 22, 2015. This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Sugilite". The seller is "classicrocksandgems2" and is located in Morsbach. This item can be shipped worldwide.