Hold on tight! This is a red diamond, technically, but to me I see the color brown--much like a 'chocolate' diamond. This .40 ct. diamond measures 4.6 x 4.4mm and will flash red and give off a very warm brown color when under a bright light. This vintage-inspired, dainty and feminine ring holds almost a quarter carat (0.22 ct) of round white natural diamonds (VS; G/H) set in a solid 14K white gold ring weighs 2.50g. I would be pleased to size this at no charge to you!