Quartz

Quartz is one of the most common and important minerals that can be found in our Earth's crust, and it comes in a variety of different colours: pink, white, lavender or purple, black or brown to smoky and yellow to an ochre colour, and can be transparent or translucent. All crystal quar Learn More

Hardness: 7 and 3.5-4 respectively on the Mohs scale.

Quartz is an abundant mineral in the Earth's continental crust.It is made up of a continuous framework of sillcon dioxides. Galena is the natural mineral form of lead(II) sulfide. It is the most important lead ore mineral. Gale Learn More

From: Frazers Hush Mine, Weardale, County Durham, UK.

Hardness: 4 and 7 respectively on the Mohs scale.

Fluorite is a halide mineral composed of calcium fluoride Fluorite may occur as a vein deposit, especially with metallic minerals, where it often forms a part of the gangu Learn More

From: Atlas Mountains, Morocco.

Hardness: 7 on the Mohs scale.

Quartz is the world's most common crystal making up one 10th of the Earth's crust. This piece formed when mineral rich preculated through the rock into a cavitiy where silion dioxide precipitated out gradually ov Learn More

Quartz is one of the most common crystals that can be found in our Earth's crust, as it formed in most silica-rich metamorphic, igneous and sedimentary rocks. There are many varieties of quartz, this is a lovely rock crystal formed in a cluster.

Quartz is an important raw materia Learn More

Quartz is one of the most common crystals that can be found in our Earth's crust, as it formed in most silica-rich metamorphic, igneous and sedimentary rocks. There are many varieties of quartz, this is a lovely example of a clear quartz point.

Quartz is an important raw material Learn More

Calcite is the most frequently found form of calcium carbonate. It is well known for the beautiful development of its crystals as well as for their brilliance.

Its name is derived from the Greek word "chalix" for lime. In World War 2, it was an important mineral as it was used for Learn More

Quartz is one of the most common and important minerals that can be found in our Earth's crust, and it comes in a variety of different colours: pink, white, lavender or purple, black or brown to smoky and yellow to an ochre colour, and can be transparent or translucent. All crystal quar Learn More

Quartz is one of the most common and important minerals that can be found in our Earth's crust, and it comes in a variety of different colours: pink, white, lavender or purple, black or brown to smoky and yellow to an ochre colour, and can be transparent or translucent. All crystal quar Learn More