Knowledge
Our knowledge section provides important background information on gemstones in general, investments and gemmology.
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 [...]
Sapphire varieties – more than just blue
The best-known varieties are pink, orange, yellow and white sapphires, but there are also bi-color, color-change and star sapphires. [...]
