Custom Carved Perdot with Natural Yellow Diamonds 18k Yellow Gold Necklace Custom carved peridot enhancer. 4.75 ct. fine deep yellow/green, from Germany. Triangular open work. accented with round natural color diamonds,yellow and green tones, in 18k yellow gold, with an 18k nautical cable necklace. More Pieces Open Channel Ring with Graduated European Cut Diamonds An open, channel set, diamond ring. in 18k yellow gold, with European cut round diamonds, 1.25ct, .85ct, and .45ct. Slight curve for a comfort fit. Black & White Pave Diamond Ring in White Gold Black and white pave' diamond ring. A classic vintage style, in14k white gold, with antique beaded bezels. Sterling & 14k Gold Bolo Tie A western bolo tie. made in sterling silver, and 14k yellow gold. Fine battle Mtn. blue turquoise, and red coral. A bold contrast of shape and color.