Siam Gems Club is an online gemstone and jewelry retailer offering natural loose gems for jewelry making, collecting, and custom designs. Its selection includes sapphires in a range of colors and styles, rubies, and many other stones, from amethyst, garnet, and emerald to opal, tourmaline, and zircon. Shoppers can browse rough and uncut gems, gemstone pairs and lots, and items accompanied by laboratory certificates.

The store also sells finished jewelry, including silver and gold pieces, gemstone beads, malas, bracelets, necklaces, earrings, pendants, and rings. For customers seeking something specific, custom services cover gemstones, malas, precious-metal jewelry, rough stones, lots, and beaded designs. Siam Gems Club provides jewelry guides and information about gemstones, including their significance, birthstones, and hardness, alongside practical resources such as ring-size guidance and FAQs.

The site highlights ethical sourcing and handmade work by Lianne. Retail customers can access worldwide free shipping, while the store also promotes fast shipping within the USA and offers a welcome discount to new shoppers