-40%
Richterite 50% Gel Gemstone Untreated Natural Cabochon Pair 0.75 ct South Africa

Richterite 50% Gel Gemstone Untreated Natural Cabochon Pair 0.75 ct South Africa

$ 18.48

Availability: 100 in stock
  • Return shipping will be paid by: Buyer
  • Natural/Lab-Created: Natural
  • Refund will be given as: Money back or replacement (buyer's choice)
  • Item must be returned within: 14 Days
  • All returns accepted: Returns Accepted
  • Country/Region of Manufacture: Germany
  • Gel Quality Faceted Sugilite: Translucent Sugilite - Royal Lavulite
  • Country of Origin: South Africa
  • Treatment: Not Enhanced
  • Condition: 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. % manganese oxide. 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.
  • Color: Purple
  • Restocking Fee: No
  • Shape: Cabochon

    Description

    Untreated Natural Quality Cabochon - Pair - 50% Gel - Richterite Gemstone
    Stones cut from rough purchased in the late 90's - Kalahari Manganese Mines - South Africa
    Pictures are enlarged and colors can vary slightly from original due to daylight lamps
    Size : 4 x 2.2 mm               Weight : 0.75 carat
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    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. % manganese oxide. 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. It is also being
    marketed under the trade names
    Royal Azel and Royal Lavulite.
    ***************