Single-cut is the simplest cut used in gemstone cutting. It is most commonly used with small diamonds. This style of cut has changed over the centuries but usually has around 16 or 17 facets. Please see the diagram below.
Below are some examples and price guides of Art Deco items with single-cut gemstones including some scroll earclips and diagrams of the various single-cuts which can be found.
Diagrams of single-cut diamonds. Reference: The Diamond Cuts
AN ART DECO BROOCH (UNA SPILLA ART DECO), CARTIER, PARIS, 1929 Designed as a flower vase of cabochon emeralds, the base decorated in black enamel, rectangular-cut sapphires and single-cut diamonds, the flowers, leafes and branches set with carrè- and rectangular-cut, cabochon emeralds, rubies and sapphires, highlighted with rose and single-cut diamonds together with seed pearls, signed Cartier Paris.
Sold for 40,000 EUR at Sotheby’s in 2019
DIAMOND SCROLL EARCLIPS, CIRCA 1930 Set throughout with single-cut diamonds, accented with old brilliant and baguette-cut diamonds, mounted in platinum, diamonds approx 3.35cts total, length 2.4cm
Sold for £ 2,805 inc. premium at Bonham’s in 2020
ART DECO DIAMOND BRACELET Circular, single, square and baguette-cut diamonds, platinum, 6 ½ ins., circa 1935
Sold for USD 27,500 at Christie’s in 2020
Art Deco Platinum and Diamond Lapel Watch Mechanical, topped by a bombé demi-cylinder, joined by a circle link, suspending a geometric panel, swiveling to reveal an oval dial, suspending a fringe of 3 bars, centering one baguette diamond, set throughout with old European and old-mine single-cut and 6 square-cut diamonds ap. 4.15 cts., circa 1925, ap. 13 dwts. gross
Sold for $7,500 (includes buyer’s premium) at Doyle in 2020
Antique Art Deco brooch finely crafted in platinum centering emerald cut Aquamarine weighing approximately 50 carat. The brooch is accented with single cut diamonds weighing a total of approximately 2.00 carat. Circa 1920
Sold for $8,500 at Bidhaus in 2021
