To create malachite's dark, emerald-esque green, squirt a few drops of the blue and yellow tints into a bowl of clear glaze, then stir. Incorporate brown or more blue to darken the hue if needed. Once ...

Azurite crystals (e.g., the Electric Blue from the Milpillas mine) show dark, blue color with high luster, and they are usually 1–2 inches long prisms or blocky crystals up to 4 inches long. They were ...

Several tons of the rough have already been sold in Lima to foreign dealers, with the largest piece weighing 80 kg. Deep blue azurite is the main mineral found today in Cochapata, accompanied by light ...