| Physical Properties of Unakite | |
|---|---|
| Mohs Hardness | 6 to 7, Blue Chart Gem Identification (2010) |
| Specific Gravity | 2.85 to 3.20, Blue Chart Gem Identification (2010) |
| Optical Properties of Unakite | |
| Refractive Index | 1.525 (+/-) to 1.760 (+/-), Blue Chart Gem Identification (2010) |
| Further Information | |
| Mineral information: | Unakite information at mindat.org |