18K DESIREE AQUAMARINE BIRTHSTONE PENDANT NECKLACE A symbol of honesty, loyalty, and beauty. Promotes courage and harmony. Materials: Stainless steel, 18K gold plated  Stone: Crystal Measurement: necklace length 17.5”, extension length 2.5” Total Length: 20” Pendant dimensions: .375 x .375 Closure: lobster clasp Additional Info:  * Hypoallergenic * High Polish Finish * Eco-friendly: We use sustainable metals and recycled gold. * Tarnish resistant and waterproof * No worries about color fading here. With proper care, this piece will last for years! See our care section for more details. * 1-year warranty All of our gold jewelry is plated with recycled gold. Each piece is coated using the highest grade technique, which is made to be more 8 times more durable than traditional gold-plated jewelry.