Early 20th Century Diamond and Opal Moth BroochEarly 20th Century Diamond and Opal Moth Brooch England, circa 1900. Made at the turn of the last century, this insect pendant has a great play of colors. Old European cut diamonds are set in oxidized silver on 18k gold. The opal's colors are challenging to capture in photographs, exhibiting a soft green with flares of orange and pink. The moth has bright green emerald eyes and has thoughtful, engraved details on the antennae and legs. The pin element