White Orbicular Agate Trillion | Cabochon for Setting | 20x17mm, 18ct | Per Pair | Indonesia | OA112
White Orbicular Agate Trillion | Cabochon for Setting | 20x17mm, 18ct | Per Pair | Indonesia | OA112
This white, cream, and clear orbicular agate is a cabochon trillion cut loose gemstone ready for jewelry making.
This Indonesian orbicular agate shows its characteristic circular patterning in white, cream, and clear tones. What makes this pair particularly interesting is that some areas of natural quartz crystal show through the clear sections, giving the stones a quiet depth beyond the surface pattern. These are high quality examples of the variety.
Orbicular agate is a variety of chalcedony distinguished by its concentric ring patterns, formed as silica-rich fluids deposited layer by layer around nucleation points within volcanic rock cavities. Indonesian material is well regarded for producing clean, well-defined orbs, and when clear or crystalline zones are present alongside the banded areas, it reflects the stone's close relationship to macrocrystalline quartz - both are silicon dioxide, just with different crystal structures. Agate sits at Mohs 6.5 to 7 with no cleavage, making it a practical and reliable choice for cabochon settings across ring, pendant, and brooch work.
DIMENSIONS
Size: 19.5mm x 17mm x 4mm
Weight: 17.6 ct
STONE DETAILS
Variety: Orbicular Agate
Also Known As: Eye Agate, Cyclopean Agate, Ringeye Agate
Species: Agate
Origin: Indonesia
Cut: Trillion, Cabochon
Treatment: None
Hardness: 6.5 – 7 Mohs
RI: 1.530 – 1.540
Sold as: Per Pair
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