A polished crazy lace agate sphere from Chihuahua in northern Mexico, banded mainly in soft white and grey with only a touch of rust red, and a clear quartz section where the agate gave way to open crystal. Crazy lace agate is a banded chalcedony, a microcrystalline form of quartz; the quartz pocket here is the same silica, just grown coarsely enough to see, marking a space in the rock the fluid never fully filled. The lacework bands formed as silica-rich water seeped through cavities in volcanic rock over millions of years, and the quiet white-grey palette is entirely natural.
Mineral: Crazy lace agate (chalcedony, SiO₂)
Crystal system: Trigonal (microcrystalline)
Origin: Chihuahua, Mexico
Hardness: 6.5 to 7 on the Mohs scale; durable and easy to handle
Treatment: None
Diameter: 6.14 cm
Weight: 310 g
Note: Acrylic stand included (not the stand shown in the photo)
You'll receive the exact piece photographed.