Global Gemstone Certification
Citrine
Citrine
A variety of quartz, this gemstone is a beautiful, vibrant yellow. The name of the stone is derived from the word ‘lemon’ in French. While natural citrine is not particularly common the dark yellow variety can be smoky quartz or even heat-treated amethyst. It can be discovered in a variety of locations around the world including Brazil, the United States, and Madagascar. It also can be found in different shades from golden yellow to brown. It has been used as a gem in Greece dating back as early as 300 B.C. Due to the color, the gem can be mistaken for Spanish topaz or gold topaz. It is often referred to as the Merchant’s Stone.
Chemical Formula |
SiO2 |
Color |
Yellow, Orange, Brown |
Hardness |
7 |
Crystal System |
Hexagonal |
Refractive Index |
1.54 – 1.55 |
SG |
2.63 – 2.65 |
Transparency |
Transparent |
Double Refraction |
.009 |
Luster |
Vitreous |
Cleavage |
Indiscernible |
Mineral Class |
Quartz |