Gold Necklace by Tiffany Co., Germany

This magnificent convertible cultured Akoya pearl necklace is a rare and regal example of mid-20th century high jewelry. This is a once-in-a-generation piece: museum-worthy, deeply collectible, and functionally royal in construction. It is quite simply an unparalleled treasure of vintage pearl craftsmanship. Composed of 64.5 inches of luminous, exceptionally large Akoya pearls—ranging from 9.3mm to 9.7mm—this necklace is not only stunning in scale but unmatched in versatility, construction, and quality. The necklace is ingeniously crafted in seven interchangeable segments, each tipped with a white gold clasp set with twelve .02 carat transitional cut diamonds—for a total of 84 hand-cut transitional diamonds weighing approximately 1.68 carats. The seven sections can be connected in various combinations to create multiple wearable lengths, from a single opera strand to a double choker and everything in between, including bracelets. This adaptable design echoes the bespoke nature of European royal jewelry, which often incorporated convertible elements to transition seamlessly from courtly daywear to formal gala adornment. Segment Breakdown: 1 strand of 16.5" 1 strand of 18" 2 strands of 7.5" 3 connector strands of 2.5" Total weight: 183 grams To encounter cultured Akoya pearls of this size and quality is nothing short of extraordinary. Akoya pearls—cultured from the Pinctada fucata oyster—are traditionally admired for their delicate size and mirror-like luster. Pearls measuring above 9mm are exceptionally rare, particularly in strands where all pearls are so uniform in shape, color, and size. This necklace is a masterclass in pearl matching: each gem is nearly perfectly round with a soft, creamy natural tone and a nearly blemish-free surface—indicators of the finest grading possible at the time. Even more extraordinary, these pearls display orient, the elusive spectral shimmer that appears to move just beneath the surface of the nacre. Orient is most often associated with natural pearls, as it occurs when nacre is extremely thick and finely layered. Its presence here suggests not only the age and integrity of the pearls, but also a degree of natural beauty that rivals the finest natural pearls in museum collections. Each of the seven connectors is finished with a refined 18k white gold cap, channel-set with twelve transitional cut diamonds—a cut dating from the 1930s–1940s that bridged the evolution from Old European to modern brilliant cuts. These diamonds were likely hand-cut, and their deeper proportions and open culets lend them a fiery, vintage charm that beautifully complements the soft sheen of the pearls. Though unsigned, the workmanship is of the highest order. Each component feels robust and flawlessly executed, the connections glide with elegant precision, and the pearl stringing remains perfectly taut. This level of detail and ingenuity would not be out of place in the ateliers of Cartier, Garrard & Co., or Buccellati. While no maker’s mark has been located, the pedigree of the piece is unmistakable. Convertible pearl...

This multicolor jade necklace from the 1950s or thereabouts was created by the venerable Hawaiian jewelry store, Ming's. Like Gump's in San Francisco, ...