925 Sterling Silver Large Mint Green Stone Pendant on 16" Popcorn Chain Necklace

925 Sterling Silver Large Mint Green Stone Pendant on 16" Popcorn Chain Necklace. I'm not positive what this stone is because it doesn't register on my gem tester as a gem. Because of that, I am thinking this is green turquoise. The pendant is heavy and measures approximately 1-3/8" wide x almost 2" long, including bale. The chain is approximately 3mm chain measuring 16" long with a spring ring clasp. Pre-owned, this lovely necklace is in great condition.

SPEC61