This dainty alexandrite ring features sheer sparkle that extends halfway around the engagement ring. The center gem appears to float above the delicate band.a??Product Information a??/span> Engagement Ring: ? Metal? ? 14k/18k gold ? Center Stone? ? Alexandrite ? Shape ? Princess ? Weight ? approx 0.6 carat ? Size ? 4x6mm ? Accent stones ? Diamonds,alexandrite ? Set ? Prong,Pave Set Matching band :Natural conflict free si-h diamonds and a alexandrite,approx 0.11 caratAlexandrite. Whether extracted from nature or created in a lab,?alexandrite engagement rings?are a quick change artist, often noted as the ¡°emerald by day, ruby by night¡± gemstone. ... Its 8.5 Mohs scale of hardness ranking make it a?good?contender for?engagement ringsWhether extracted from nature or created?in a lab,alexandrite engagement rings are a quick change artist, often noted as the ¡°emerald by day, ruby by night¡± gemstone. When this gemstone was first discovered in Russia in 1834, it was mistaken foremerald . It wasn¡¯t until the light changed that the miners realized they had discovered an entirely new gemstone, and it was given the name ¡°alexandrite¡± for the Russian Tsar Alexander II. Glistening under sunlight, alexandrite stones appear a vivacious teal-green color, but when paired with artificial or incandescent light, a deep purple or magenta color takes over. With such duality, alexandrite engagement rings are perfect for the free spirited soul.