Brazilian Agate
Natural bands · gray · honey · blue when treated. Architectural panels are hand-assembled composites of gem fragments.
Best for: Backlit bars, feature walls and furniture.
Watch for: It is a crafted gem surface—not a monolithic slab.
Brazil · Semiprecious
Rio Grande do Sul (agate/amethyst)
Rio Grande do Sul · Ametista do Sul. Agate and amethyst geodes.
BrazilRio Grande do Sul · Ametista do Sul27.36°S 53.18°W
- Rock
- geodes in basalt
- How it formed
- Agate and amethyst geodes in the basalts of the Paraná Basin.
- Minerals
- agate, amethyst, quartz
- Colours
- purple, blue, gray, white
- Veining
- concentric bands
- Well-known stones
- Amethyst · Blue Agate · Grey Agate
Trade names are matched by rock family. The exact origin of a slab comes with its lot documents.
Stones from here
What comes out of Rio Grande do Sul (agate.
Amethyst
Violet · crystal · smoky gray. Brazilian geodes translate mineral cavities into illuminated architecture.
Best for: Lighting features, bars and collectible furniture.
Watch for: Avoid presenting assembled panels as solid natural slabs.
Carnelian
Orange · rust red · translucent honey. Iron-colored microcrystalline quartz produces a warm translucent gem surface.
Best for: Collector furniture, backlit bars and protected feature walls.
Watch for: Most architectural gemstone slabs are hand-assembled composites, not monolithic rock.
Red Jasper
Brick red · burgundy · cream. An opaque silica gem whose red comes from hematite rather than dye when natural.
Best for: Collector furniture, backlit bars and protected feature walls.
Watch for: Most architectural gemstone slabs are hand-assembled composites, not monolithic rock.
A stone from Brazil?
Send us its name or a photo and we will identify the slab and tell you plainly how it behaves.