Blue Sapphire, Tsavorite and Diamond Ring Set in 18 Karat White Gold Blue Sapphire with Tsavorite Ring Set in 18k White Gold Settings For Blue Sapphire with Tsavorite Ring Set in 18k White Gold Settings For Blue Sapphire with Tsavorite Ring Set in 18k White Gold Settings For. The vibrant blue sapphires and citrus green tsavorites in this elegant ring glisten like over flowing treasure. An updated classic with variegated stones sizes tightly nested in pirate sized chunk of gold. 18K Gold, Blue Sapphire, Tsavorite Care: avoid water, lotions, chemicals, perspiration