Here is a 1.60Ct Blue Topaz and Diamond Cocktail Ring in 10k gold. This is part of a collection of estate jewelry that will be auctioned this week. The center is approximately a 1.50Ct Marquise Blue Topaz that is outlined by a row of Diamonds. The total Blue Topaz and Diamond weight is approximately 1.60Cts. The ring is size 5.25 and it will be sized free upon request of the winning bidder. This will be auctioned to the highest bidder at $1 No Reserve.