Keum boo is a Korean technique of applying 24 carats of gold to silver, and is used in many different cultures (both in Japan and China, but also in the West where historically they mainly applied gold to iron, steel and copper with this technique).

Peridot is known for its yellow-green, intense (olive) green to dark green colour. The colour can variant from pale to deep green.

Silver polishing? What to do and what not to do? How do I best clean and polish my silver?

A pearl can be formed in an oyster when, for example, a grain of sand or a small parasite (vermin) invades the organism. The immune system encapsulates the intruder and layer after layer of pearl is deposited.

A precious metal is a metal that barely reacts chemically with other substances and is therefore resistant to corrosion and oxidation.

Diamond is carbon crystallised under high pressure and high temperatures. The process takes place in the deep parts of the earth’s crust (between 140 and 190km deep) to form diamond, temperature of 1100-1300°C are needed.