• <span>tansanit_19.891_gla53786_22000</span>
  • <span>tan_19.891_tropfen_gla53786_22.000_000001</span>

Tanzanite

Item Number: 2021-0390

In stock

€22,000.00

incl. 20% VAT

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Details

Weight:
19,891 ct.
Color Quality:
very good (II)
Purity:
B

Facts

properties of tanzanite

  • Belongs mineralogically to zoisite
  • Hardness grade 6,5-7
  • Chemical formula: Ca2Al3(SiO4)3OH
  • Includes the colors blue, violet and brown
  • By heating it develops its famous blue color
  • Density from 3,29 - 3,4

origin

worth knowing

  • Only place of discovery: Tanzania
  • Tanzania locality was discovered in 1967
  • Was mineralogically known as "Zoisite" for a long time
  • Became known worldwide through the movie "Titanic"

Tanzanite as an investment

  • Rare, strongly increasing in value
  • finds become less, because there is only 1 mining area
  • rather bigger stones are preferable
  • Larger stones have higher increase in value
  • stones with deep blue color are to be preferred
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