This 0.72tcw Natural Diamond Vintage 1970's Bowtie Style Engagement Ring is 18k/750 Yellow Gold. The natural round brilliant cut center diamond is VS clarity and I/J color. The 10 round brilliant cut & 6 baguette cut natural diamonds are average VS-SI clarity and H/I color. The ring weighs approximately 2.87g stamped 750. The ring is size 4.5 and measures 11.65mm x 5.71mm x 4mm. This ring is authenticated by AGA appraisal certificate no. 12002. This beautiful engagement ring is a unique piece for your loved one.