Vintage 14k Marquise cut Diamond ring totalling 0.9 Ct. With valuation cert 1993

Vintage 14k Marquise cut Diamond ring totalling 0.9 Ct. With valuation cert 1993 This Diamond ring is ‘STUNNING’ Full stop. The Central marquise cut Diamond is assessed at 0.46 Ct. The Halo tiered Diamonds are assessed at 0.44 Ct. The crown of the ring holding the diamonds is 14k White gold and the band is 14k Yellow Gold. This ring shows so many sparkles it’s truly a pleasure to wear. The assessment is from 1993, if I was to have it reassessed today it would be valued far higher. The size is approximately 5.75 on the ring Mandrel, please see photographs. This ring is in excellent condition and comes in the original box it was bought in. Marked T AV 14k I have looked but cannot find out what the T AV stands for. Truly a treasure for your finger.