Onyx Jewelry Value & Price Guide

Onyx Ring 14k Yellow Gold Marquise 10x5mm Shaped Black Textured Gold Size 5.5 | eBay

Art Deco Style Asymmetrical Ring 925 Sterling Silver Onyx Protection Vintage | eBay

925 Solid Sterling Silver & Gold Tone Large Square Black Onyx Ring Men/Women | eBay

MORNING SUN 925 Sterling Silver Vintage Real Black Onyx Floral Pendant | eBay

14k Yellow Gold Ring with Iolite Center Stone and Diamonds (Size: 6.75) | eBay

Onyx jewelry is a timeless staple in the world of collectibles, prized for its deep, lustrous finish and its versatility across various design eras. From the bold geometric patterns of Art Deco rings to the sleek sterling silver settings of the late 20th century, this chalcedony variety remains a favorite for its sophisticated aesthetic.

Price Range: $75 - $100 based on recent sales

History of Onyx Jewelry

The use of onyx in jewelry dates back to antiquity, but it saw a massive resurgence during the Victorian era as a primary material for mourning jewelry due to its somber black hue. By the 1920s, onyx became an essential element of the Art Deco movement, where its stark black color provided the perfect high-contrast backdrop for white diamonds and platinum settings. During the mid-to-late 20th century, designers shifted toward more organic and brutalist styles, often setting onyx in sterling silver. This period also saw the popularization of green onyx, offering a vibrant alternative to the traditional black variety and expanding the stone's reach into bohemian and modern fashion circles.

Value Factors for Onyx Jewelry

The typical price range for Onyx Jewelry is $75 - $100 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

Historical Era: Pieces from the Art Deco period (1920-1940) typically command the highest prices due to their intricate craftsmanship and vintage appeal.
Carving and Detail: Hand-carved cameos or intaglios are more valuable than standard flat-cut or cabochon stones.
Metal Purity: The value fluctuates significantly based on whether the onyx is set in 18k gold, 14k gold, or sterling silver.
Accent Stones: The inclusion of genuine diamonds or high-quality gemstones like garnets can double or triple the market value of a standard onyx piece.

Tips for Buying Onyx Jewelry

Examine the surface of the onyx for scratches or chips, as the stone's smooth polish can easily highlight physical wear.
Verify the setting material, as onyx is frequently paired with both high-karat gold and sterling silver, significantly impacting the overall price point.
Look for 'intaglio' or 'cameo' carvings in older pieces, which add significant artistic value compared to plain cabochons.
Check for the presence of accent stones like diamonds or marcasite, which were commonly used in the 1920s and 1930s to provide contrast against the black stone.