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Global Gemstone Certification
Amethyst
Amethyst
This is by far one of the most popular gemstones on the market today. The value of this gemstone has always been noted on the market. However, since the 1800s common discoveries of large deposits of the stone have ensured it is affordable for all. The name of amethyst originated from the Greek word ‘Amethystos’ which means ‘not drunken.’ During this time rich members of society would drink out of cups made from the stone. This was due to the fact that the cups created an illusion that the hosts were drinking wine, allowing them to secretly remain sober in front of their guests. The violet color of the stone is due to the process of irradiation as well as impurities of transition metals or iron. The hardness of the material is the key reason why it is chosen for use in creating beautiful examples of jewelry.
Chemical Formula |
SiO2 |
Color |
Purple |
Hardness |
7 |
Crystal System |
Hexagonal |
Refractive Index |
1.54 – 1.55 |
SG |
2.63 – 2.65 |
Transparency |
Transparent to translucent |
Double Refraction |
.009 |
Luster |
Vitreous |
Cleavage |
Indiscernible |
Mineral Class |
Quartz |