Onyx
Brazil, India · 5 specimens · 16.5ct avg
Onyx is a striking banded variety of chalcedony, known for its rich black color often accented with white or brown bands. It has a hardness of 6.5 to 7 on the Mohs scale, making it suitable for various jewelry applications, commonly cut into cabochons or beads.
Price History
Listings
Specimen Data
Value Drivers
Carat weight significantly influences Onyx pricing, with larger stones generally commanding higher prices. The current market shows a median price of $46 per carat, but larger pieces can reach much higher values.
Color plays a vital role in Onyx pricing, with pure black stones being the most sought after. Variations with distinct banding or unique color patterns can also attract premium prices.
Clarity is less critical for Onyx compared to other gemstones, as this variety can tolerate some inclusions without significantly affecting its value. However, stones with fewer visible imperfections are generally more desirable.
The cut of Onyx can impact its appeal and price, with well-executed cabochons and beads often fetching higher prices. Unique shapes and designs can also enhance a piece's marketability.
Market Dynamics
The current supply of Onyx is stable, with no specific origin data available to indicate significant fluctuations. This stability is beneficial for collectors and investors looking for consistent availability.
Demand for Onyx is driven by its cultural significance in jewelry and decorative arts, as well as its appeal to collectors and designers. Its versatility makes it a popular choice for both traditional and contemporary pieces.
Recent news indicates potential tariff increases on colored gemstones, which could affect Onyx prices and availability in the U.S. market. As collectors remain vigilant, the market may experience shifts in pricing dynamics.
News
Insights
The median price per carat for Onyx is currently $46, while the mean price is significantly higher at $96.
The price range for Onyx varies widely, with a P10–P90 spread from $18 to $200 per carat.
Larger Onyx stones tend to command higher prices, reflecting the market's preference for substantial pieces.
The recent introduction of tariffs on colored gemstones could lead to increased costs for consumers, impacting demand.
Testing can distinguish natural from dyed material through color concentrations in fractures and reactions to certain solvents.
Onyx's affordability means that design and branding are often the main drivers of finished jewelry prices.