Celtic Black Onyx Engagement Ring Set in Sterling Silver

925 means the metal is 92.5% pure silver, alloyed for strength — pure silver on its own is too soft to hold a stone securely. It is the international standard for fine silver jewellery, and every Aquamarise® piece is stamped 925 inside the band.

Ours is then finished with rhodium — the same precious-metal finish used on white gold. Rhodium is one of the hardest metals used in jewellery and completely non-reactive, which is what gives the ring its bright, cool white surface and keeps it looking that way through daily wear.

Warm water, a drop of mild washing-up liquid and a soft toothbrush around the setting. Rinse well and dry thoroughly with a soft cloth — moisture left sitting on any finish is what dulls it fastest.

Skip the silver dips and abrasive polishing compounds sold for untreated silver: the rhodium finish is doing the work here, and those products strip it rather than clean it. Take the ring off before swimming, cleaning or applying perfume and lotion, and store it dry and separately from harder stones. Our Jewelry Care Guide has the full routine.

For a promise ring, a stacking ring, a travel piece or a first engagement ring, it is an excellent choice — rhodium-finished, bright white, and a fraction of the price of gold. It is the metal most of our customers start with, and the reason our silver engagement rings outsell everything else on the site.

For a ring intended to be worn every day for decades, solid gold and platinum are harder-wearing and hold their value; those are made to order in 3–6 weeks and cost considerably more. Plenty of couples buy sterling now and upgrade at an anniversary. Our Precious Metal Guide compares them side by side.

Measure at home with our Ring Size Chart, or use the Find my ring size link beside the Add to Cart button. If you are between sizes, size up.

If the fit is not right when it arrives, size exchanges are free — send it back within 14 days unworn and we will send the correct size out. That is the whole process: no fee, no forms. Engraved rings are the one exception, as each is cut specifically for you.

Sterling silver is kept in stock and leaves our workshop in 1–4 business days; engraved orders sit at the longer end while each one is laser-cut. The estimated delivery date shown above is calculated for your order, and US shipping is free and fully insured, in a gift-ready ring box. Full timings are on our Shipping & Delivery page.

On most designs, yes — where engraving is available, a text field appears with the options above. Standard laser engraving is complimentary: up to 16 characters on women’s rings and 25 on men’s, set in Arial, with a selection of symbols included at no extra cost. Custom fonts and symbols are $25 and are arranged before you order.

See the Engraving page for examples. Engraved rings are final sale, so check your wording carefully — we engrave exactly what is entered.

Return or exchange it within 14 days of delivery, unworn and in original condition. Size exchanges are free. Engraved pieces are final sale, as each is cut specifically for you.

Full terms are on our Returns & Refunds page, and every ring carries our lifetime warranty against manufacturing defects.