Crown Gems Mohs • Gemology
The science behind the stone
Gemology studies gemstones through measurable properties such as chemical composition, crystal structure, optical behaviour, inclusions, hardness, specific gravity and refractive index.
What we look at
- Identity: determining what mineral or gem material a stone is.
- Origin: geographic origin may sometimes be assessed, but it is a specialised determination and is not guaranteed for every stone.
- Treatment: heat, filling, irradiation and other treatments can affect appearance and value and should be disclosed where known.
- Durability: Mohs hardness is one useful measure, alongside toughness and stability.
- Testing: professional gemological testing can help distinguish natural, laboratory-grown and imitation materials.
Gemology and astrology are different
Gemology is a scientific field concerned with identifying and evaluating gem materials. Astrological gemstone recommendations belong to a traditional belief system. Crown Gems Mohs keeps these ideas clearly separated so customers can make informed choices.