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16.7.2: Thulita

Última actualización

30 oct 2022
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- 16.7.1: Tanzanita
- 16.08: Granate

gemology
Gemology Project

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Thulite
Composición química	Silicato cálcico y aluminio
Sistema de cristal	Ortorrómbico
Hábito	Masiva
Dureza	6.5
Naturaleza óptica	Biaxial +
Índice de refracción	1.685-1.707
Birrefringencia	0.008
Dispersión	Bajo, 0.012
Gravedad específica	3.35
Lustre	Vítreo

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