Knowledge
Our knowledge section provides important background information on gemstones in general, investments and gemmology.

Gemstone in India – From olden times to present times
The history of gemstone trading and jewelry making goes back more than five millennia. [...]
High Jewelry: Gemstone jewelry as a value investment
Is high Jewelry: suitable as an investment? And what role do the gemstones used in the jewelry play? [...]
Compensating stones for each sign of the zodiac
What are compensating stones and which gemstone is assigned to which zodiac sign? [...]
Sustainability in gemstones: Fair, environmentally friendly & transparent?
Is the mining of gemstones fair and sustainable? And what are actually ethically correct gemstones? [...]
Investment in gemstones for beginners: tips for getting started
Gemstones are not only beautiful to look at, they also offer several advantages that make them an attractive investment option. With our tips, yo [...]
Surface treatment of gemstones: from crack filling to lasering
Untreated gemstones are particularly valuable and best suited as an investment. However, there are not enough gemstones that are naturally of pri [...]
Turmanling group: varieties of the colorful gemstone
Few gemstones have such a wide variety of colors as tourmaline. Learn in this article, which varieties of the tourmaline group there are. [...]
What to consider after buying investment gemstones
After buying gemstones for investment purposes, there are several factors to consider. Learn all about storage, care, insurance and more here. [...]