*CUSTOMIZATION OF METALLIC TAG WITH BRAND NAME AVAILABLE. - MATERIAL: 24 karats gold-plated over a base of stainless steel. - LENGTH: 39 cm + 5.5 cm /  15.3 inch + 2.1 inch (adjustable extension) - PENDANT MATERIAL: Natural healing crystals (Rose Quartz and Amethyst). - PENDANT SIZE: 3.5 cm * 2.5 cm / 1.3 inch * 0.9 inch. - Each order includes a small dropper to fill the crystal bottle. - Hypoallergenic and Nickel-free. - Handmade. Lovely and natural crystals bottle necklaces that you can fill with perfume, aromatic oils or moon water. These crystal necklaces can be opened and closed safely and comfortably. Each of the stones is natural crystals cut in the shape of a bottle heart, and each one is unique due to its natural origin. The chain is made of 24 karat gold-plated stainless steel, which makes it resistant, hypoallergenic (friendly to sensitive skin) and friendly to water. You will not have problems of color change or tarnish, besides that it is Nickel-free.