Fibonacci Signet Ring - Silver Golden Ratio Sacred Geometry Jewelry

The Fibonacci signet ring from Swan Jewellry is a sacred geometry piece themed on the golden ratio, made to order in 925 sterling silver, gold plated, gold vermeil or solid 14K gold. Choose your US ring size and ask about engraving. A proof comes first, making takes about 2 business days, and shipping is free.

The Fibonacci signet ring takes its theme from the number sequence where each term is the sum of the two before it.

Fibonacci golden ratio ring

The title ties the sequence to the golden ratio and sacred geometry, a pairing mathematicians and designers often draw. Silver is the title metal. The product photos show how the geometry sits on the face.

Metals and finish

Choose from 925 sterling silver, gold plated, gold vermeil and solid 14K gold. The gold plated and gold vermeil finishes wear with daily use over months to years, while solid 14K gold does not.

Sizing

Choose your US ring size on the product page, from 2 to 16. Not sure which? The ring size guide shows how to measure.

Personalizing it

Send initials, a name, a date or reference artwork on the product page, and a digital design proof comes back for your approval before anything is made. Only send artwork you are entitled to use. The steps are on the how personalization works page.

Made to order and shipping

Each ring is cast, engraved and finished by hand, about 2 business days once the design is approved. Shipping is free and tracked, delivery takes 5 to 7 business days, and US orders arrive duties paid. Browse more symbolic rings or read the warranty.

What is the Fibonacci sequence on this ring?

It is the number series 1, 1, 2, 3, 5, 8 and so on, where each number is the sum of the two before it. The ring is themed on it and the golden ratio. The photos show the exact motif.

Can I add engraving to the Fibonacci signet ring?

Engraving may be available. Send initials, a date or a short line on the product page, and the design proof shows the layout before production. Gold plated, vermeil and solid 14K gold are also offered.

Can I get the Fibonacci signet ring in my ring size?

Yes, you choose a US ring size on the product page, from 2 to 16. The ring size guide explains how to measure at home. Eligible size exchanges are covered under the exchange policy, so check it before you order.

Do I see a proof before the Fibonacci signet ring is made?

Yes, for personalized work a digital design proof is sent for your approval, usually within 24 to 48 hours. Production starts only after you approve it, and you can ask for changes at the proof stage.