History of the discovery In 1786, a teacher at the Freiberg Mining Academy, Abraham Gottlob Werner, set about
History Sphalerite has been known since antiquity, but the famous medieval alchemist Gregory Agricola was the first to study it.
Diamonds are a girl's best friend. What beauty wouldn't want to receive a birthday present?
What determines the value of a ruby? Types of rubies Deposit and color of the stone. The most expensive rubies
What is quartzite? It is a metamorphic rock consisting predominantly of quartz - one of the
Types of wedding rings made of two and three types of gold (with photos) Many types of wedding rings
Historical background In its pure form, the stone is colorless aluminum oxide. But thanks
There are an incredible number of minerals in the world, each of which can have a positive or negative effect.
History and origin Rutile quartz differs from other quartz in its unique pattern, reminiscent of human hair.
Gold products are expensive and exquisite jewelry that best emphasize status and position.
