Marquise Sapphire and Diamond Ring Value Guide

This vintage American ring features a classic marquise-cut sapphire, a shape famously inspired by the smile of the Marquise de Pompadour. Flanked by three round diamonds on each side, this 1970s-1990s piece represents a modern revival of the elegant Victorian and Edwardian navette styles.

What affects the value of Marquise Sapphire and Diamond Ring?

• The saturation and clarity of the sapphire, with deep 'cornflower' or 'royal' blues commanding higher prices within the $350-$450 range.
• The karat weight of the gold band, typically 10k or 14k for this era and price point.
• The total carat weight and clarity grade of the six accent diamonds.
• Overall condition of the prongs and the absence of chips on the sapphire's vulnerable pointed tips.

How to Identify Marquise Sapphire and Diamond Ring?

• Verify the marquise-cut sapphire center stone for its distinctive elongated, pointed oval shape.
• Check for a total of six round-cut accent diamonds, arranged in groups of three on each side of the sapphire.
• Inspect the inner gold band for hallmark stamps indicating gold purity and potential US manufacturer marks common to the late 20th century.
• Examine the setting style, which typically utilizes prongs to secure the points of the marquise stone to prevent chipping.

History of Marquise Sapphire and Diamond Ring

Sapphires have been cherished gemstones for millennia, symbolizing royalty, wisdom, and protection. The marquise cut, also known as a navette cut, dates back to the 18th century. King Louis XV of France commissioned a diamond cut to resemble the smile of his mistress, Marquise de Pompadour. This elegant cut became popular in engagement rings and fine jewelry, particularly during the Victorian and Edwardian eras, often paired with accent diamonds as seen in this piece.