Trolleite 8mm Round - 15-16 Inch Tan Red Lightning Agate is predominantly

Red Lightning Agate is predominantly red with swirls and mottling of green

and it has been used throughout history for various purposes

grossular (varieties of which are hessonite or cinnamon-stone and tsavorite)

as well as other non-standard crimp bead and tube sizes

Blood Quartz is a clear to milky to white silicon dioxide mineral

Trolleite 8mm Round - 15-16 Inch Tan Red Lightning Agate is predominantlyTrolleite is an extremely rare aluminum phosphate mineral that crystallizes in the form of masses and small prismatic crystals. It is made up of quartz, lazulite, scorzalite, and sometimes lepidolite. It's often found in large masses and can be colorless, light to pale green, bluish green, or bright blue. Trolleite is known for its greasy appearance and subdued shine, even when polished.