HC Arnoldi

HC Arnoldi is a family-run gemstone cutting and colored-stone business based in Kirschweiler, near Idar-Oberstein, Germany. Established in 1919, the company combines more than a century of experience in the international gemstone trade with in-house craftsmanship. Its business-to-business online shop serves jewelers, goldsmiths, jewelry designers, and manufacturers worldwide; access to purchasing requires registration and approval of a business account.

The range includes gemstones such as aquamarine, tourmaline, garnet, amethyst, sapphire, spinel, topaz, and many other colored stones, offered in varied colors, cuts, and qualities. Aquamarine is a signature stone, with shades ranging from pale blue to vivid Santa Maria blue. HC Arnoldi sources rough stones through long-standing supplier relationships and oversees selected stones from material selection through cutting in its own workshop. The company also presents gemstone collections, individual stones, and paired or combined sets, alongside information about gemstone origins, treatments, cuts, and certificates. Personal guidance, customer service, shipping information, and updates on new arrivals and trade events support its professional customers.