** You will receive the exact specimen order by NUMBER**
Scientific Name: Botryoidal Purple Chalcedony
Chemical Formula: SiO₂ (Silicon Dioxide)
Mineral Group: Quartz (variety of microcrystalline chalcedony)
Crystal System: Trigonal (though crystals are microscopic and hidden within the botryoidal form)
Mohs Hardness: 6.5–7 (durable for handling and display)
Specific Gravity: ~2.6
Luster: Vitreous (glassy)
Transparency: Translucent to semi-transparent
These natural Grape Agate specimen is a rare variety of botryoidal chalcedony (SiO₂) sourced from Indonesia. Its distinctive grape-like formations are created by microcrystalline quartz growth, and its purple hue comes from trace elements of iron and manganese. With a Mohs hardness of 6.5–7, this specimen is both durable and striking — a perfect addition for collectors seeking unique and locality-specific minerals.
