10 millimeters high 18 millimeters wide ???QUANTITY??Fashion and Meaningful Locket Pendant (Internal Diameter: About 18mm/ 0.78) *1 + Lava Stone (Diameter: About 17mm/ 0.67, Random Colors) *5 + 24 Chain *1 + Gift Packaging *1. ???NATURAL VOLCANIC ROCK?? A stone of protection, strength and fertility, Lava beads provide stability in times of change. It often helps to dispels anger, cements our beliefs and provides guidance, clarity and hope in difficult times. And it is a very grounding stone, strengthens our relationship with our planet. Each one completely unique – no two are alike. (Without fragrance) ???BEST GIFTS?? Aromatherapy can be soothing, uplifting and even healing. Practical and Thoughtful gift set. You can choose this necklace set for yourself, alternate use or share it with your family or friends. ???OPENABLE & INTERCHANGEABLE?? The locket has a clasp on its side, you can open the locket, refill a ball, add 2-3 drops of your favorite essential oils onto the ball, wait a minute, close locket, and enjoy your personal diffuser. ???HIGH-QUALITY MATERIAL?? Delicate Silver Plated Copper + Natural Round Lava Rock Stone (Sustained Release Ball).