10K Gold Amethyst, Blue Topaz, Citrine Multi Gemstone Ring With its gleaming colors and unmistakable charm, this ring really is a true gem. The multi gemstone ring features 3 natural emerald cut stones - blue topaz, amethyst and citrine. The ring is set in 10KT polished solid yellow gold and weighs a generous 5.9 grams. This ring qualifies for free custom ring sizing. Size 7 1/2 is standard. When you order a custom size, please allow an additional 7-10 business days processing time.