Antjsony Roadshow expert Christie Romero was on hand to appraise a woman's opal necklace from the late 1970s, with the guest ...

An Antiques Roadshow guest was left stunned after hearing the true value of a Tiffany necklace given to her by her husband - ...

Black opal is one of the rarest gemstones in the ... And the price of larger stones has risen by as much as 25 times. In 2000, jewelry company Le Vian capitalized on the underappreciated naturally ...