Peridot engagement rings? Absolutely! Diamonds may be a girl's best friend, but Peridot engagement rings are a unique, original, and a far more affordable choice. Once considered more valuable than diamonds, a peridot ring is a must have. This "gem of the sun" is the birthstone of August and is a beautiful match for the lush green tapestry of late summer. November's birthstone, citrine sparkles like honey. Carry the warmth and glow of a golden sunset with you by wearing a beautiful citrine ring.