|Beautiful natural tourmaline with certificate offered|
Color: red brown
Weight: 8.90 ct
Dimensions: 15 x 11 mm
Value: CHF 5'359.-
The value is calculated on the basis of an individual CGJL certificate of the lot of which the gem is part (see photo). It is reported in CHF at the current exchange rate, but is not indexed.
Precious and semi-precious stones are a good term investment and a good alternative to other types of investments. The indices below show the evolution of the historical average value of tourmaline.
Reference index: July 2005 = 100.00
Index at the date of the certificate: March 2009 = 137.4
Current index: February 2019 = 332.91