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

Quartz – Geology is the Way

Quartz, Amethyst, Smoky Quartz with Water Bubble - SM20-223

General : Bent, Deformed, or Strange Crystals / Minerals #3

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

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

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

Crystal Basics: Types of Quartz Crystals Explained

Minerals, Free Full-Text

AMXY1 Very Rare Brandburg Amethyst & Smoky Quartz Crystal Showing