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Spinel

Item Number: SPI-PUR-2018-128

€1.600,00

incl. VAT

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Details

Price:
1.600,00 €
Weight:
6,988 ct.
Color:
purple
Shape:
Octagon
Dimensions:
12,9 mm x 9,17 mm x 6,17 mm
Color Quality:
good (V)
Purity:
very small inclusions (C)
Origin:
Unknown origin
Treatment:
Untreated
Certificate:
GLA47436
Item Number:
SPI-PUR-2018-128

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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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