Star Sapphire

Where it forms, where it's found

18recorded occurrences

Source · OpenStreetMap

Chemical composition

Constituent elements: Mass composition breakdown
Element Atoms At. mass g/mol Mass g/mol Mass share
13AlAluminium Aluminium 2 26.982 53.964
52.93%
8OOxygen Oxygen 3 15.999 47.997
47.07%
Total 101.961 100.00%
Mass share = atoms × atomic mass ÷ molar mass × 100
From Mindat formula

Mass composition breakdown
Element	Atoms	At. mass g/mol	Mass g/mol	Mass share
13AlAluminium	Aluminium	2	26.982	53.964	52.93%
8OOxygen	Oxygen	3	15.999	47.997	47.07%
	Total	101.961	100.00%

Synonyms

Sternsaphir

Literature, links & citation

Citations

2005Morris, N. (2005) Diamonds and other gems. Appleseed Editions, East Sussex.
2007Nadin, E. (2007) The secret lives of minerals. Engineering & Science, No. 1, 10-20.

Cite this entry

@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Star Sapphire — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/star-sapphire-30580},
  note      = {Accessed 2026-05-11}
}