The emerald belongs to the beryl group as well as the aquamarine, gold beryl and heliodor. However, the emerald is...
Due to its charming iridescent play of colours, opal is one of the most interesting...
The blue variant of the corundum group is called sapphire. Like ruby, it has a hardness of 9 according to Mohs and is...
The most beautiful type of lapis lazuli is an opaque stone of a magnificent...
The fashionable stone of the Biedermeier era is once again enjoying great popularity due to the...
The term tourmaline comes from the Sinhalese turmali and means stone with ....
Like the sapphire, the ruby belongs to the corundum group. It is second only to the diamond ...
Garnet varies greatly in terms of specific gravity, hardness and light refraction. Some varieties...
This term is used to describe the colour varieties that are not aquamarine....
The coral is formed by small polyps in the sea. The stick is made with a wide foot on the...
Diamond is the hardest gemstone, it has hardness 10 according to Mohs. There is no...
It is the most valuable stone in the chalcedony group. Due to its apple-green colour...
The citrine got its name from its yellow colour, which resembles lemon. Naturally yellow...
Amber was formed up to 260 million years ago from viscous tree resin. In the course of the...
The aquamarine is a gemstone from the beryl group, has the hardness 8 according to Mohs and is therefore...
It is often used as a diamond substitute or in costume jewellery. Partially...
The aragonite is actually transparent and quite inconspicuous. However, through the incorporation of copper, as well as iron, it receives its wonderful blue and light brown coloration.
The Schörl - Black Tourmaline - an energetic protection stone
Carnelian, as a variety of chalcedony, belongs to the quartz group and to the mineral class of oxides.
Around the year 1800, the rose quartz got its name because of its whitish pale pink to intense pink color. It belongs to the mineral class of oxides and is assigned to the quartz group.