sedimentary
Crazy Lace Agate
Silicon Dioxide (SiO2)
Hardness 6.5-7 on Mohs scale; waxy to vitreous luster; microcrystalline/cryptocrystalline; exhibits complex, swirling, lace-like banding patterns in shades of red, pink, white, grey, and cream; shell-like conchoidal fracture.
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Physical properties
Hardness 6.5-7 on Mohs scale; waxy to vitreous luster; microcrystalline/cryptocrystalline; exhibits complex, swirling, lace-like banding patterns in shades of red, pink, white, grey, and cream; shell-like conchoidal fracture.
Formation & geological history
Formed in cavities within volcanic or sedimentary rocks through the low-temperature deposition of silica from groundwater over millions of years. Predominantly mined in Chihuahua, Mexico.
Uses & applications
Popularly used for lapidary arts, cabochons, carved ornaments, decorative display pieces, and tumbled gemstones in jewelry.
Geological facts
Often referred to as the 'Laughter Stone' or 'Happy Lace' in metaphysical circles due to its vibrant, energetic patterns. It was formed during the Cretaceous period, roughly 65 to 90 million years ago.
Field identification & locations
Identified by its distinctive, intricate lace-like banding and high hardness (scratches glass). Primary deposits are found in northern Mexico, particularly in Chihuahua.
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