Quartz (minéral) — Wikipédia

Quartz: Varieties and Types of Quartz (Photos)

Galena with Quartz - September Mine (9th of September Mine

Quartz, Definition, Types, Uses, & Facts

Crystal - Wikipedia

Ópalo - Wikipedia, la enciclopedia libre

Angel Aura Quartz Point - Crystal Vaults

Phantom Quartz, KJD Wiki

Fake Minerals

I tried Google Lens on a few specimens to see how accurate it is

Quartz: Mineral information, data and localities.

Chalcedony - Wikipedia

Giant Calcite Mineral Specimen from Russia

Quartz - Wikipedia