Description
FACTS
properties of spinel
- Own mineralogical group
- Hardness grade 8
- Chemical formula: MgAl2O4
- Includes almost all colors
- Colored by different metal oxides
- High density of the mineral: 3.6 – 4.1
origin
- Burma
- Vietnam
- Tadschikistan
- Sri Lanka
- Afghanistan
worth knowing
- Oldest known locality: Burma
- Has been confused with ruby for a long time
- Some of the most important “rubies” in the world are therefore spinels
- Spinel can be distinguished from ruby by its crystal system and refraction of light
- Gives courage and confidence
- Most important place of discovery is still Burma
investment in spinel
- Outsider in the investment field, which will quickly increase in value
- Rare, rapidly increasing in value
- Stones should have at least 2 ct weight
- Larger, luminous stones have higher increase in value
- Experts expect 8 – 10% increase in value per year
- Beautiful sparkling spinels are to be preferred
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