A stone will be intuitively chosen for you. As stones are natural, size & color may vary. The tealight is used for a size reference. You can choose between a silver or gold chain. The chain is 18 k gold plated stainless steel or stainless steel. These chains are 1.5 mm thick. You choose the length of your necklace. The price varies by length. Blue Apatite Raw Nugget Pendant Necklace