Light Blue Gemstone Pendant and Silver Chain Teardrop-Shaped Crown Aquamarine?

Blue gemstone necklace. Might be aquamarine (not glass anyway). Silver or possibly white gold. Gem is teardrop-shaped with a sort of crown. Stone about 8mm tall, pendant about 17mm tall total, and necklace chain about 45cm long. Maybe worn a couple times. - Smoke-free and dog-free home. Cat exposure. - Considering buying items priced under $20? Bundle two or more to save! - New user? Sign up with promo code goldfish888 to get $15 in FREE credits.