Ladies 18k Rainbow Gemstone and Diamond Ring Size 7.5. Band 4.5-13.5mm thick set with square and baguette cut peridot, citrine, amethyst, and blue topaz measuring 4x4mm to 12x4mm. Also (8) round brilliant cut small diamonds 1.3mm. Marked 18K. Overall excellent condition. It weighs 8.5 grams.