Malachite with Chrysocolla
Did you know?
The malachite columns and vases in Russia's imperial palaces look carved from solid blocks of green stone. They are not: each is a mosaic of paper-thin slices fitted so precisely that the banding runs unbroken, a craft known as Russian mosaic.
Chrysocolla is named from the Greek for gold and glue, because ancient jewelers used it to solder gold. Despite the name it holds no gold at all, and owes its blue-green color entirely to copper.
