AAA Gel Sugilite Gemstone Carving Pair 28.2ct Top Qualität Sugilith Gravur

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Vendeur: classicrocksandgems2 ✉️ (5.419) 100%, Lieu où se trouve: Morsbach, DE, Lieu de livraison: WORLDWIDE et de nombreux autres pays, Numéro de l'objet: 161075224268 AAA Gel Sugilite Gemstone Carving Pair 28.2ct Top Qualität Sugilith Gravur . AAA Sugilite Carving - Wessels Mine - South Africa Beautiful handcrafted  engraving - pair for earrings As shown in the second picture  - gel translucent quality Weight: 28.20 ct                   Size: 26 x 16 x 4mm

Sugilite
Sugilite from Wessels Mine in Northern Cape Province , South Africa
General
CategoryCyclosilicate
Formula (repeating unit) K Na 2(Fe ,Mn ,Al )2Li 3Si 12O 30
Strunz classification 09.CM.05
Dana classification63.02.01a.09
Crystal symmetry Hexagonal
Identification
Formula mass 1,041.66
ColorLight brownish-yellow, purple, violet, reddish violet, pale pink, colourless
Crystal habit Granular
Mohs scale hardness6–6½
Luster Vitreous
Streak White
Diaphaneity Transparent to translucent
Specific gravity 2.74
References[1] [2]

Sugilite  (also known as lavulite ) is a relatively rare pink to purple cyclosilicate  mineral with the complex chemical formula K Na 2(Fe ,Mn ,Al )2Li 3Si 12O 30. Sugilite crystallizes in the hexagonal  system with prismatic crystals. 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. It is mostly translucent.

Sugilite was first described in 1944 by the Japanese  petrologist  Ken-ichi Sugi  (1901–1948) for an occurrence on Iwagi Islet, Japan , where it is found in an aegirine  syenite  intrusive  stock. It is found in a similar environment atMont Saint-Hilaire , Quebec , Canada . In the Wessels mine in Northern Cape Province  of South Africa , sugilite is mined from a strata-bound  manganese  deposit. It is also reported from Liguria  and Tuscany , Italy ; New South Wales , Australia  and Madhya Pradesh , India .

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": / ˈ s uː ɡ ɨ l aɪ t /  soo -gi-lyt .

Contents   [hide ] 
  • 1  Gallery
  • 2  See also
  • 3  References
  • 4  External links

Gallery [ edit ]

See also [ edit ]
Earth sciences portal
  • Classification of minerals
  • List of minerals
  • List of minerals named after people

References [ edit ]
  1. ^  Webmineral
  2. ^  Mindat.org

External links [ edit ]
  • R. V. Dietrich
  • Mineral galleries
  • MSA Handbook PDF
Categories : 
  • Potassium minerals
  • Sodium minerals
  • Iron minerals
  • Manganese minerals
  • Aluminium minerals
  • Lithium minerals
  • Cyclosilicates
  • Gemstones
  • Condition: Neuf : autre (voir les détails) 
  • Stein: Sugilite
  • Farbe: Purple
  • Reinheit: AAA GEL Translucent
  • Gewicht: 28.2ct
  • Schliff: Engraved pair for earrings
  • AAA Sugilite Carving: AAA Sugilith geschnitzt paar

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