18K ITALIAN HIDDEN RUBY BANGLE BRACELET WITH DIAMONDS: Attrib. Roberto Coin. 18K white gold hinged bangle bracelet, slight oval in shape, with 7 channel set round brilliant diamonds totaling approx. .50 Ct., VS clarity and G-H color. One ruby on the outside, one hidden on the inside. The hidden ruby is a trademark of Roberto Coin. Interior diameter 2 1/8''. Weight 15.2 grams. Sold with 2010 current Florida Diamond Appraisers GIA graduates appraisal for $2,600.