Classic simplicity defines this delicate setting, which features a thin precious metal band that gently tapers towards a pear-shaped diamond accent on each side of the center gem.a marquise moissanite wedding band fit well under this alexandrite engagement ringProduct Information Engagement Ring: Metal Sterling Silver, 10k/14k/18k gold, Platinum Center Stone Alexandrite Shape Round Weight approx 1carat Size 6.5mm Accent stones Moissanite Set Prong, Pave Set Matching band :stone: 0.12ct Moissanitetotal weight: 1.66gshank width: 1.55mmshank thickness: 1.3mmAlexandrite. Whether extracted from nature or created in a lab,alexandrite engagement ringsare a quick change artist, often noted as the ??emerald by day, ruby by night?¡§¡è gemstone. ... Its 8.5 Mohs scale of hardness ranking make it agoodcontender forengagement ringsWhether extracted from nature or createdin a lab, alexandrite engagement rings are a quick change artist, often noted as the ??emerald by day, ruby by night?¡§¡è gemstone. When this gemstone was first discovered in Russia in 1834, it was mistaken foremerald. It wasn?¡ê¡èt until the light changed that the miners realized they had discovered an entirely new gemstone, and it was given the name ??alexandrite?¡§¡è 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.