Tag Archives: Azul

(Na,Ca)-8 Al-6 Si-6 O-24 (S,SO)-4

The chemical formula for lazurite is (Na,Ca)8Al6Si6O24(S,SO)4. It is the primary mineral in lapis lazuli, a semi-precious gemstone valued for its opaque color. The gemstone name is composed of lapis, which is Latin for stone, and lazuli, the deep blue color. This … Continue reading

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Lapis lazuli

I’m reading the Old Testament book of Ezekiel. When God called Ezekiel to be a prophet to the exiled Israelites, he gave him a vision. [Let’s review: after being delivered from slavery in Egypt, wandering in the desert for a … Continue reading

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