Knowledge
Our knowledge section provides important background information on gemstones in general, investments and gemmology.
What does a gemologist do?
Gemology is the science of gemstones, therefore a gemologist is an expert in gemology. [...]
Buying gemstones on vacation
Rubies from a vacation in India, sapphires from Sri Lanka or lapis lazuli from Turkey - many gemstone and jewelry lovers like to buy gemstones or [...]
Heat Treatment of Gemstones
Why are gemstones heat treated and which gems are "improved" that way? [...]
Irradiation of Gemstones
Irradiation is a rarely used method of treating gemstones by which the color properties of a gemstone can be altered. [...]
Is now a good time to invest in gemstones?
How to determine the optimal time to invest, or to put it more simply: Is now a good time to invest in gemstones? [...]
The mining of gemstones
The way gemstones are mined differs, depending on the type of deposit. [...]
Gemstones from Germany
The most important gemstone deposits in Germany are already largely exhausted, but hobby collectors still get their money's worth at some sites. [...]
Gemstones from Austria
Gemstones can be found in Austria's mountains if you know where to look. [...]
