Lot of 5 tumbled Snowflake Obsidian (variety of Obsidian) from USA

Lot of very nice 5 tumbled Snowflake Obsidian (variety of Obsidian, which is a variety of natural Glass) that has black body colour and numerous small radiating inclusions of cristobalite.
Location: Sevier Lake, Utah, USA
Size: up to 2.5 Centimeters
Weigh: 25 Grams