Comes with a specimen card

Ruby is the second hardest stone after diamond so few artists have managed to successfully work this mineral since it requires a very advanced technique for carving and polishing

this meteorite has a TKW of 3 tons

greenish gemstone formed by the impact of a meteorite

Gem Type: Tanzanite Crystal

Emerald | Oval Cabochon | 8x6.5mm 1.73ct | Africa Achondrite Comes with a specimen cardProduct Type: Emerald Approx Weight (per piece): 1. 73ct Size: 8x6. 5mm Shape: Oval Cabochon Color: Best Green Clarity: Fine Crystal Origin: Africa Emeralds are prized for their vibrant green color which is caused by trace amounts of chromium, vanadium, and iron in the crystal structure of the gemstone. On the Mohs scale of mineral hardness, emeralds have a rating of 7. 5 to 8. This means that while they are relatively durable, they are not as hard as