Beryl is a mineral that comes in different colors. The transparent blue beryl is the very popular gem known as “aquarina”. When translucent to opaque, the name “blue beryl” is best suited, but some jewelry stores use the name aquamarine.
Tree agate is a name used for a white chalcedone with green dendritic characters. It is a very popular material used to make beads, cabochons and fallen gems. The stones shown here are made of material extracted in Botswana.
A quick online search should give you some ideas about where these sites are located near your region. The most common counterfeit crystals are those of the Quartz family. This is because they seem easy to crystal bracelets imitate to visually look like real gems. So if you are inexperienced, the easiest way to investigate whether you have a real crystal or not is to test the weight next to pieces of glass of a similar size.
Turquoise is a gem so famous for its distinctive blue-green color that the gemstone name has entered a common language. Turquoise has been won in many parts of the world. The best known custom is in Native American art, produced by people in the Southwestern United States. These stones are pieces of broken septal nodules that have fallen and polished.
Some people call this material “Dragon Jasper”, but that is incorrect: Jasper is a cryptocrystalline quartz and an opaque variety of chalcedonia. Bloodstone, also known as heliotrope, is a green jasper dotted with small drops of red. Red drops remind many people of blood, which is the source of the name Bloodstone. It has been a popular stone since the biblical era.