Knowledge
Our knowledge section provides important background information on gemstones in general, investments and gemmology.
Trading Names of Gemstones
Gemstones are not only known by their mineralogically correct names. In addition to obsolete names and synonyms, there are also trading names tha [...]
The Kimberley Process – stopping the trade of blood diamonds
Certificates of origin that prove where diamonds come from and that no conflicts or civil war parties have been financed by their sale – that i [...]
Star Sapphire & Star Ruby
How are star sapphires and star rubies formed and what makes them so valuable? [...]
Clarity, Color Quality & Fluorescence of Gemstones
What is the role of clarity, color quality, and the phenomenon of fluorescence in determining the value of gemstones? [...]
Diamond Price: How the value of diamonds is calculated.
The value of a diamond is essentially determined by the 4 C's: color, cut, clarity and carat. [...]
How to sell gemstones
If you are interested in investment gemstones, you will sooner or later deal with the question of how to sell your stones again. [...]
The Garnet Group
Garnet" denotes a group of minerals. We provide an overview of the most important colors and discuss which ones are interesting for an investment [...]
Storing investment gems properly
Anyone who invests in gemstones must also think about storage. The costs of storage as well as the safety of the valuable stones must be consider [...]
