Seen such Phenomena. Smoky Quartz Crystal with Bubbles around It inside Clear Quartz Crystal. : r/geology

Gemopedia - Gemstone Encyclopedia

Geology Wonders - Ultra clear and lustrous, from the Alps! Smokey

Why has this enhydro quartz got black water bubbles? : r/whatsthisrock

How To Tell if a Crystal Is Real (15 Signs and Tests)

Quartz

A glass like rock with white inclusions : r/whatsthisrock

Crystal Basics: Types of Quartz Crystals Explained

Crystal Basics: Types of Quartz Crystals Explained

Smoky Quartz (with bubble inside!) - QTZ22-21 - Mogok Valley

Tibetan Clear Crystal Quartz Point w 3 Visible Moving Bubbles

General : Collected With Your Dirty Hands -- Location and In-Situ