Antique Necklace Art Deco .25 Old European Cut Diamond in 14K White GoldArt Deco jewelry is known for its intricately detailed geometric designs. This pendent is made of 14K white gold and is a stunning example of the beautiful jewelry made during the era. The . 25 carat old European cut diamond placed in the center of the pendant is surrounded by filigree work that gives this piece its iconic look. Placed on the lower half of the pendant is a . 07 carat calibre cut sapphire giving a pop of color to this exquisite piece.