This polished 18-karat yellow gold mounting is contemporary, and likely was an artisan piece made by a boutique jeweler! Flowing polished gold plays with negative space beautifully, accented by a channel of sparkling diamonds. The prong setting protects the shimmery Australian opal at the center, which glimmers with pops of green, orange, yellow, and electric blue! Metal: 18K Yellow GoldGem: Australian OpalGem Measurements: 16.7 x 10.5 mm, Natural FormAccents: 14 Diamonds totaling .21…