LPR08 The classic 18k yellow gold round solitaire diamond engagement ring is available in .50ct, .75ct, or 1.00ct. Band measures 3mm wide.  All diamonds are of SI quality and H-I color. All 1.00ct diamonds come with diamond certifications from EGL or GIA. At least 10% of the proceeds from every purchase go to organizations who believe in the transformative powers of Love, Peace and Hope and help to bring those ideals to people across the world. Cost: $1138 Payment Options: Credit Cards/ Paypal Shipping: Free within US for purchases of $200 and above.