including one round cut blue topaz weighing approximately 12.15 ct., set in a 14k yellow gold ring, size 5 1/4; one round cut amethyst, weighing approximately 2.00 cts., surrounded by (20) round cut synthetic spinels, set in an 18k yellow gold ring, size 7 1/4; one round cut zircon, weighing approximately 5.00 cts., set in an 18k yellow gold mounting, size 6, together with one topaz, sterling silver gilt ring, size 5 3/4, lot weighs 24.03 grams