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Star Sapphire

A variety of 'Sapphire' [Corundum]
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About Star SapphireHide

Formula:
Al2O3
A variety of sapphire that exhibits a star pattern when viewed down the c axis. The chatoyance is due to oriented microscopic inclusions (nanorods) of diaspore (Nadin, 2007).

The Star of India is the largest star sapphire in the world (563 carats or 113 grams). It was found in Sri Lanka in the 17th century. In 1900 it was donated to the American Museum of Natural History in New York, where it is on permanent display (Morris, 2005).




Unique IdentifiersHide

Mindat ID:
30580 (as Star Sapphire)
1136 (as Corundum)
Long-form identifier:
mindat:1:1:30580:4 (as Star Sapphire)
mindat:1:1:1136:1 (as Corundum)

Pronunciation of Star SapphireHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Chemistry of Star SapphireHide

Mindat Formula:
Al2O3
Element Weights:
Element% weight
Al52.925 %
O47.075 %

Calculated from ideal end-member formula.

Other Language Names for Star SapphireHide

Simplified Chinese:星光蓝宝石

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Star SapphireHide

References for Star SapphireHide

Localities for Star SapphireHide

Showing 26 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Canada
 
  • British Columbia
    • Slocan Mining Division
Jennifer Pell (1994)
Myanmar
 
  • Mandalay Region
    • Pyin-Oo-Lwin District
      • Mogok Township
        • Bernardmyo
Themelis (2008)
Themelis (2008)
        • Chaung-gyi
Themelis (2008)
Themelis (2008)
Themelis (2008)
Themelis (2008)
        • Kathé (Kathe)
Themelis (2008)
Themelis (2008)
        • Kyatpyin Central
Themelis (2008)
        • Kyauk-Pyat-That
Themelis (2008)
Themelis (2008)
          • Yadanar-kaday-kadar
Themelis (2008)
        • Marble Ark
Themelis (2008)
          • Kyauk-poke (Rotten Stone)
Themelis (2008)
Themelis (2008)
        • Mogok Valley
Themelis (2008)
Themelis (2008)
Themelis (2008)
Themelis (2008)
Themelis (2008)
Poland
 
  • Lower Silesian Voivodeship
    • Lwówek Śląski County
      • Gmina Mirsk
        • Szklarska Poręba
Lis et al. (1986)
Sri Lanka
 
  • Sabaragamuwa Province
    • Ratnapura District
      • Ratnapura
Econ Geol (1981)
Thailand
 
  • Chanthaburi Province
O'Neil (1983) +2 other references
 
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