Properties
- Mineral group: Quartz
- Chemistry: SiO2
- Color: Colourless white, yellow, brown, pink, violet, green and others
- Crystal system: Trigonal
- Mohs Scale hardness: 7
- Refractive index: 1,544-1,553
- Birefringence: +0,009
- Specific gravity: 2,63-2,65
Other
Quartz is a mineral in a broad sense with similar chemical composition. Quartz can be divided into two main subsets. Crystalline (macro-crystalline), the variety is generally associated with quartz. This group includes Quartz, Amethyst, Smoky Quartz and others.
The second group are polycrystalline (micro-crystalline), and have in turn several subgroups. Here we find the groups Chalcedony, Jasper, Quartzites and silicate replacements. Known examples here are Agate, Carnelian and different varieties of jasper and Tiger’s eye.
Gemstone Guides & Knowledge
Read more about Agate on RIDDGEM Blog
Watch movies and Shorts about Agate on RIDDGEM YouTube
Read/Learn more about Quarts under "Gemstoneinformation"
Agate in healing
Agate is a versatile crystal that comes in a variety of colors and patterns, and in healing it is said to have several powerful and balancing properties.
Read/Learn more about Agate - Healing Properties
