Properties
| Family | Quartz species |
| Chemistry | SiO2 |
| Refractive Index | 1.544 - 1.553 |
| Birefringence | .009 |
| Specific Gravity | 2.65 |
| Hardness | 7 (Moh's Scale) |
| Color Range | Purple to yellow-orange |
Romance, History & Lore
On rare occasion, amethyst and citrine are simultaneously crystalized into a single gemstone called ametrine. This unique jewel, a member of the quartz family, displays both purple and yellow-orange hues. When cut correctly, these colors can be seen in a naturally-occurring pinwheel formation. Ametrine is as priced similarly to amethyst or citrine individually, making it a highly affordable gemstone. With a hardness of 7, ametrine is durable and suited for everyday wear.
Origins
Ametrine can be found organically in only one place: the Anahi Mine of Bolivia, where it is said to be a treasure of the Bolivian Ayoreos people. The gemstone was first introduced outside of Bolivia in the 17th century, when a Spanish conquistador received it as a dowry for his marriage to Anahi, princess of the Ayoreos.
