Turquoise/Teal-Coloured Raw Crystal Necklace

Turquoise/teal-coloured raw crystal necklace. Purchased at an artisan fair a few years ago, but unfortunately I don't remember the maker's name. - I don't know for sure what the metal is, believe the chain could be stainless steel - Pendant measures approximately 1.5 inches at its longest point by 1 inch wide (3.81 x 2.54cm) - Chain is approximately 26 inches (66.04cm) long - Lobster clasp closure - Comes from a smoke-free home - Please ask all your questions prior to purchasing