Vintage Black Hills Gold CCO Solid 14K Marquise Emerald Diamond Ring Size 6.75

This Black Hills Gold solid 14K gold marquise emerald and diamond ring is a striking and unusual design, marked CCO for the Coleman Company. A rich green marquise-cut emerald is set east-to-west across the top, framed on each side by a trefoil cluster of three round diamonds nestled in bright white gold, giving a lovely two-tone contrast against the warm yellow gold band. The split shoulders and softly domed mounting add a sculptural, custom feel. What makes this piece especially interesting is that it departs from the grape-and-leaf styling Black Hills Gold is best known for, making it a distinctive and hard-to-find example from this South Dakota maker. A wonderful ring for anyone who loves color, sparkle, and something truly different.

Verifications:
Solid 14K gold has been verified using an Auracle Gold Analyzer.
Diamonds have been verified using a Presidium Adamas Diamond Tester, which specifically distinguishes diamonds from moissanite.
Emerald has been verified using a Presidium Gem Tester II.

Details:
Brand: Coleman Company (CCO)
Style: Black Hills Gold
Metal: Solid 14K gold (yellow with white gold accents)
Item: Ring
Center Stone: Marquise-cut emerald
Accent Stones: Round diamonds in two trefoil clusters
Ring Size: 6.75
Weight: 2.65 grams
Hallmarks: 14K and CCO
Condition: Excellent estate condition

Fun Facts:
The Coleman Company crafted Black Hills Gold in South Dakota from 1984 until it closed in 2017, so its CCO-marked pieces are no longer being produced, and a gemstone design like this is an unusual departure from the maker's signature grape-and-leaf work.
The marquise cut was reportedly commissioned in 18th-century France by King Louis XV, who wanted a gem shaped like the smile of his companion, the Marquise de Pompadour, giving the cut both its shape and its name.