Vintage Italy 18K Gold 20 Carats Blue Star Sapphire and Diamond Rivere Necklace

A beautifully composed vintage Italian rivière necklace from the 1940s, this piece captures the refined balance of elegance and craftsmanship characteristic of mid-century design. Crafted in 18K yellow gold, the necklace features a graceful line of natural blue cabochon star sapphires, each bezel set to highlight their smooth, luminous surfaces and subtle star effect. The stones are slightly graduated, creating a fluid silhouette that drapes effortlessly along the neckline.

Enhancing the design, eight old mine cut diamonds are delicately positioned between the sapphires, adding a soft, antique sparkle that contrasts beautifully with the velvety depth of the blue stones. The composition is thoughtfully completed with a matching star sapphire set into the clasp.

Item details

Circa 1940s

Metal: 18K yellow gold

Weight: 39.6 grams

Gold purity: tested approximately 17.47K

Hallmarks: present on the tongue of the clasp

Length: 15 inches

Sapphires:

Type: natural star sapphires (cabochon)

Quantity: 7 in the necklace + 1 on clasp

Weight ~20 Carats

Color: blue

Center stone size: 10 x 8 mm

Graduation: tapers to approximately 9 x 7 mm on the sides

Setting: bezel set

Layout: slight graduation, rivière style

Diamonds:

Quantity: 8 old mine cut

Total carat weight: approximately 0.80 carats

Color: G/H Clarity: SI

Clasp:

Type: secure decorative clasp with integrated star sapphire