Product Details. Chain thickness: 1.1mm. Gem sizes: 2.5mm to 3.5mm.. Diamond size: 2mm. Necklace length is available in 4 adjustable sizes.. Safe for sensitive skin.. Base Metal: Stainless Steel. Coating: 14K Gold PVD Stainless Steel. How to Order:. Click the Build Your Necklace button.. Select your chain.. Add your charms.. Add as many charms as you'd like! One for daughters, sons, loved ones, etc.. Click the Add to Cart button once you're done picking your charms.. Proceed to checkout, or keep browsing the rest of the site!. Plus.... Some months have more than one stone, so pick the one you like more. Each charm comes with a card inscribed with the meaning of the stone, and everything comes together in a beautiful jewelry pouch, ready for gift giving!