18ct Sapphire Diamond Ring
An 18ct sapphire diamond ring brings together rich blue gems and sparkling stones in gold or platinum settings.

18ct Sapphire Diamond Ring
When you search for an 18ct sapphire diamond ring, you encounter pieces spanning from the Victorian and Edwardian eras through Art Deco to mid-century designs. The cluster form dominates, arranging diamonds around a central sapphire, alongside traditional three-stone and five-stone boat shapes.
Yellow gold, white gold and platinum provide the mountings for these gems, reflecting the shifting tastes of the late nineteenth and twentieth centuries. Cluster rings, daisy styles and geometric half eternity patterns make up the core of what appears here.

Materials and construction
Craftsmen utilised 18ct yellow and white gold alongside platinum settings to secure sapphires and diamonds. Stones received various cuts, including old European cuts, princess cuts, oval cuts and round facets.
Metalwork involved intricate claw settings, cluster arrangements and geometric channel or half eternity patterns. Platinum frequently appeared alongside yellow or white gold in Edwardian and Art Deco mounts to provide a bright, durable contrast.
18ct Sapphire Diamond Ring Retail Price Guide 2026
Typical asking prices for 18ct sapphire diamond ring among the pieces listed under this phrase on Sellingantiques today, from the lower quarter to the upper quarter. They describe what is for sale here now, not the wider market.
Some Edwardian makers hid tiny platinum threads beneath cluster heads just to keep the blue of the sapphire looking sharp against the yellow gold.
Assessing quality in 18ct rings
The distinction between standard examples and the finest pieces rests on the depth of the sapphire's colour, such as cornflower hues, and the clarity of the surrounding diamonds. Superior examples display balanced proportions where the stones complement the metalwork rather than overwhelm it.
Execution of the setting technique marks out finer pieces, whether in delicate Edwardian millegrain edges or bold Art Deco geometric arrangements. The integration of platinum with 18ct gold points to thoughtful material selection by the maker.
The 18ct Sapphire Diamond Ring Glossary
- Cluster ring
- A ring featuring a central stone surrounded by a border of smaller gems. This layout maximises visual impact and was favoured across Victorian, Edwardian and mid-century periods.
- Trilogy ring
- A ring set with three stones, often representing past, present and future. These pieces typically feature a central sapphire flanked by two diamonds.
- Old European cut
- An early form of brilliant-cut diamond characterised by a small table, high crown and open culet. Common in Victorian and Edwardian jewellery.
- Cornflower sapphire
- A term describing a specific medium-blue velvety hue associated with high-grade sapphires. It remains a desirable characteristic among collectors.
- Boat ring
- A ring featuring a curved, navette-like shape that tapers towards the ends. This silhouette sits low on the finger and appeared frequently in the nineteenth century.
18ct Sapphire Diamond Ring: Frequently Asked Questions
How do I date an 18ct sapphire diamond ring?
Dating relies on the style of the setting, the cut of the stones, and hallmarking evidence. Victorian and Edwardian pieces often display delicate claw work or millegrain edges, while Art Deco examples show geometric lines.
Changes in gold colour and the introduction of platinum in mountings also help determine the period of manufacture.
What is a cluster ring?
A cluster ring groups a central gemstone, such as a sapphire, with a surrounding border of smaller diamonds. This configuration increases perceived scale and sparkle.
The style remained popular from the Victorian era through the mid-twentieth century.
Are these rings suitable for daily wear?
Diamonds and sapphires rate high on the Mohs hardness scale, making them durable for regular use. However, 18ct gold is softer than platinum and requires occasional inspection of the claws.
Removing the ring during manual tasks preserves the integrity of the setting.
What is an old European cut diamond?
An old European cut is a predecessor to the modern round brilliant diamond, featuring a smaller table and hand-faceted proportions. It appears commonly in antique pieces.
This cut produces a distinctive warmer light reflection compared to contemporary stones.