22 janvier 2013
Ring, Italy?, 16th-early 17th century, gold, turquoise and rock crystals.
Ring, Italy?, 16th-early 17th century, gold, turquoise and rock crystals. Mined in Persia, turquoise is a soft porous mineral that has not survived the centuries well and is easily discolored even by the oils from the skin. It was highly prized in the...