Starry Night & Black Onyx Engagement Ring Set in 14K White Gold

This Starry Night black onyx ring set frames a kite-cut galaxy sandstone — deep midnight-blue scattered with copper starlight — in a kite-shaped black onyx halo, paired with a chevron contour band accented with black onyx. A two-piece set in cool solid 14K white gold, where the opaque black onyx deepens the "dark cosmos" effect and makes the sandstone's sparkle read even more like stars against a night sky.

The starry-night stone — honest disclosure

The kite-cut center is blue galaxy sandstone, also called blue goldstone — a man-made art glass with tiny copper crystals suspended in deep cobalt glass to mimic a starfield. We're upfront that it's man-made, not a natural mined gem; it was created centuries ago specifically to capture the look of the cosmos, and nothing natural quite reproduces that glittering effect. Because sandstone is softer (about 7 Mohs), we offer a free upgrade to a natural blue sapphire center at no additional cost for more durability — just leave a note at checkout.

The black onyx

The kite-shaped halo around the center, the round accents on the chevron band, and the marquise accent at the V-apex are genuine natural black onyx — an opaque black chalcedony quartz. Its deep black is the perfect frame for the cosmic blue, sharpening the night-sky contrast. Black onyx accents can be upgraded to black diamond on request. Explore more black gemstone jewelry.

A two-piece set

Sold as a two-piece set; each ring can also be worn on its own. If you love unconventional bridal styles, our non-traditional engagement ring guide is a great read, with more in our nature-inspired engagement rings.

Choose your metal

This set is solid gold — the metal itself, not plating or vermeil over a base metal. Choose your karat from the drop-down; each is real solid gold, and the cool white keeps the cosmic blue-and-black palette crisp. The color is permanent: it won't wear off and won't turn your skin green.

• 10K white gold — the most affordable and hardest-wearing option, great for everyday durability.
• 14K white gold — our most popular choice, balancing durability, purity, and value.
• 18K white gold — a higher gold content for a more luxurious feel and weight.
• Platinum — naturally white, hypoallergenic, and the most premium option.

Not sure which to pick? Our 10K vs 14K vs 18K gold guide breaks down the trade-offs. Yellow or rose gold available on request.

Sizing & care

Galaxy sandstone is softer (~7 Mohs) and prefers gentle care — avoid hard knocks, harsh chemicals, and ultrasonic or steam cleaners; clean with a soft, barely-damp cloth. The black onyx appreciates the same gentle treatment. (The optional natural sapphire center is far harder at 9 Mohs.) Both rings should be ordered in the same size; please reference our sizing guide before ordering. An optional written appraisal can be added from the drop-down menu (non-refundable once completed).