75ct in Old Mine Cut SI VS H Diamonds. NICE cluster of diamonds an a nice filigree ring. Circa 1920s and almost 100 years old.Gram Weight: 1.4 grams. 75ct Old Mine Cut Diamond 18k White Gold Filigree Ring RARE" is in sale since Thursday, October 27, 2016. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Rings\Diamond". The seller is "oldtreasures333" and is located in American Fork, Utah. This item can be shipped worldwide.