This is a terminated translucent gemmy pistachio-green ( caused by trace to minor contents of Fe2+) Diopside crystal silver pendant from Tanzania.
The glowing crystal has glassy faces and bright luster.
Location: Merelani Hills, Umba Valley, Lelatema Mts., Arusha Region, Tanzania
Size: 3.0 x 0.7 x 1.2 Centimeters with bail
Weigh: 3.94 Grams combined

Interesting Fact:
Tashmarine is the trade name for a rare gem-quality variety of brilliant yellowish-green diopside. The name 'Tashmarine' was trademarked by C. Gem House, USA. 'Tash' means 'stone' in several Central Asian languages and is short for 'Tashkent' where Tashmarine was first discovered, and 'marine' means 'ocean' or 'sea'. For the owners of C. Gem House, it was also important that 'marine' was a word of European origin. they wanted to choose a name which linked Asia with Europe, because Tashkent was an important trading point on the old Silk Road between China and Europe. And since this is where Tashmarine diopside was first found, 'East meets West' seemed to be a relevant theme for its name. (https://www.gemselect.com/)