This 18ct yellow gold Ring boasts a square cut, natural, rich blue Sapphire surrounded by sparkling Diamonds.This Deco style Ring is pre-ownedand has age. The natural Sapphire is 0.20ct.It is a rich, royal blue and this is the favourite colour of 50% of all people - men as well as women.It is a colour which is strongly linked with feelings of sympathy and harmony, friendship and loyalty - everything that is constant and reliable.The Diamonds sparkle and shimmer with immense brilliance and sparkle captivating nature's allure & beauty.There are 12 diamonds which are 0.01cts each.This would make a beautiful Engagement Ring.It weighs 2.9 grams.In very good condition it looks gorgeous when worn.UK Size is G1/2 and USA Size is 3.75. It would resize.The dimensions are 6mm across and down - that's approximately 1/4 of an inch.