Properties
| Category | Tectosilicate minerals |
|---|---|
| Formula | SiO2 (silicon dioxide) |
| Crystal system | Trigonal (quartz) or monoclinic (moganite) |
| Color | Pale blue, white |
| Crystal habit | Cryptocrystalline silica |
| Cleavage | None |
| Fracture | Conchoidal, subconchoidal |
| Tenacity | Brittle |
| Mohs scale hardness | 6.5–7 |
| Luster | Waxy, vitreous when polished |
| Streak | White |
| Diaphaneity | Translucent to opaque |
| Specific gravity | 2.6 |
| Density | 2.6 g/cm3 |
From the Wikipedia article
Blue lace agate is an agate variety with pale blue and white, lace-patterned banding. Until 2017, its primary source was a single, now-defunct mine in Namibia, although similar material can be found elsewhere. Blue lace agate is a vein agate; in Namibia, it formed in dolerite of Jurassic age. It is used in lapidary as a semiprecious gemstone.
Source
Source record: crystal-compendium/blue-lace-agate/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Blue_lace_agate — revision id 1346967994. Text and properties from Wikipedia, licensed CC BY-SA 4.0.