description Euclase Overview
Euclase is a rare beryllium aluminum silicate mineral with the chemical formula BeAlSiO₄(OH). Its name derives from the Greek words "eu" (good) and "klasis" (breakage), referring to its perfect cleavage. The mineral typically forms prismatic crystals in granitic pegmatites and hydrothermal veins, with colors ranging from colorless to pale blue, blue-green, and rarely deep blue. Gem-quality crystals, prized by collectors for their vitreous luster, come primarily from Brazil and Zimbabwe.
Despite its beauty, euclase remains relatively unknown in commercial jewelry due to its rarity and difficulty in cutting.
help Euclase FAQ
What is euclase made of?
Euclase is a rare beryllium aluminum silicate mineral with the chemical formula BeAlSiO4(OH). It commonly forms prismatic crystals in granitic pegmatites.
Why is euclase called euclase?
The name comes from the Greek words eu and klasis, meaning good breakage. It refers to euclase's perfect cleavage, a property that can make crystals fragile.
Where does euclase form?
Euclase typically forms as prismatic crystals in granitic pegmatites. Its beryllium-bearing chemical composition distinguishes it from ordinary quartz.
Why can euclase be difficult to cut?
The mineral has perfect cleavage, so it can split easily along specific planes. That physical property is directly reflected in the Greek-derived name euclase.
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