Necklaces

Discover necklaces crafted from some of the world's rarest precious metals. At MetaMetals, we combine platinum-group metals such as osmium and rhodium with traditional materials like gold, silver, and platinum to create exclusive pendant necklaces.

Our necklaces fall into two categories: crystal necklaces featuring organically grown osmium crystal pendants, each with a unique surface structure that will never be replicated, and bar necklaces with precisely cut osmium or rhodium bars set in platinum chain designs. Both types are handcrafted by master goldsmiths in Austria and shipped worldwide with insured delivery.

Each necklace can be personalised — from chain length and material to pendant size and setting style. Browse all jewelry categories or explore osmium crystals to understand the raw material behind our most exclusive pendants.

An osmium crystal pendant necklace is among the rarest and most exclusive pieces of jewelry in the world. Each pendant features a crystallised osmium piece with a surface structure formed during the CVT crystallisation process — a geometry so unique it functions as a natural fingerprint. No two osmium crystal pendants are identical.

Osmium's reflective properties give these pendants a distinctive blue-silver shimmer that is often described as more brilliant than diamonds. Set in platinum or gold chains, osmium crystal necklaces combine the rarity of the world's densest precious metal with timeless elegance.

Crystal necklaces are available in various sizes depending on the osmium crystal selected. Learn more about how osmium crystals are formed.

Our bar pendant necklaces feature precisely cut precious metal bars — osmium or rhodium — set in 990 platinum chains. The Osmium Edge and Rhodium Edge are designed as statement pieces: the dense, compact bars create a distinctive visual weight that sets them apart from traditional gold or silver pendants.

Bar necklaces can be ordered directly through this website with immediate shipping. Custom chain lengths and settings are available upon request.

Our necklaces are available in a range of chain styles including anchor chains, curb chains, Figaro chains, and Venetian designs. Materials include 990 platinum, 14K and 18K gold, 925 sterling silver, and rhodium-plated options. Standard lengths range from 40 to 60 centimetres, with custom lengths available on request. All chains feature secure lobster clasps or spring ring closures.