Modern and timeless 18-karat gold ancient Roman glass with tanzanite nuggets, Ethiopian opals, and marquis chain necklace. The ancient Roman glass is 1500-1800 years old and varies from 6-18mm in diameter. The tanzanite nuggets are 6-8mm in diameter. This stunning necklace is 34 inches long and may be worn long or doubled for a short look. The color and iridescence of the ancient glass in this necklace elevates any outfit!