- Color: yellow
- Hardness: 7
- Refractive index: 1.54 - 1.55
- Density: 2.65 - 2.66
- Chemical composition: SiO2
- Crystal structure: hexagonal
- Origins: Widespread; best stones come from Brazil.
Citrine is one of the least expensive gemstones. Even very big pieces, 50 carats and more, can be easily found on the market. Greenish-yellow and orange stones are more valuable, and heat treatment is often applied to enhance the yellow color.