Customizable Diamond Half Eternity Ring For Sale at 1stDibs A half hoop Diamond eternity ring Vintage, half hoop diamond eternity ring Antique Ring Boutique : US Customizable Diamond Half Eternity Ring For Sale at 1stDibs Antique Half Hoop Diamond Ring at 1stDibs victorian half hoop diamond. A fine 18 carat white gold* half hoop eternity ring. Set with seven brilliant cut white diamonds. Graduates from 2mm to the centre stone which is 3mm. Diamond total is estimated at 0. 40 carats. Good bright stones, colour H j, clarity Si. Spreads around the finger to 19mm, width 4mm, weight 2. 3grams. * no hallmarks as period of manufacture assumed 1950 1960, no hallmark was legally required. Size L, we can resize free of charge but please check your size with us first as there will be limitations.