Knowledge Centre
Jewellery
Learn about diamonds and coloured stones, read laboratory reports and choose care appropriate to the material.
4 articles
Jewellery
Treated gemstones: what to ask before buying or cleaning
Understand heat treatment, fracture filling and why cleaning methods must suit the actual stone.
3 minSources included
Natural diamonds, lab-grown diamonds and simulants: what is the difference?
Understand diamond origin, lab-grown material, moissanite and CZ before buying or asking about pawning.
3 minHow to read a diamond report: 4Cs and the checks that matter
Understand carat, colour, clarity and cut, verify report details and inspect the actual ring before buying.
3 minRuby, sapphire, emerald and other popular gemstones
Recognise gemstone names and ask the right questions about identity, origin, treatment and condition.
3 minNo questions match that search
