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No. 531 Octagon nugget ring, three-quarter view, 14K yellow gold, 3D render
No. 531 Octagon nugget ring, the nugget pattern, face on, 14K yellow gold, 3D render
No. 531 Octagon nugget ring, underside, the inside of the band, 14K yellow gold, 3D render

No. 531 · The Assay Office

Octagon nugget signet ring

An octagonal face in a stepped frame. An octagon nugget signet ring in solid 14K gold or sterling silver.

$3,850

from 19.8 gof solid 14K gold at US 10 (our reference size)

Estimated from the 3D file we cast from; your certificate shows the estimated weight.

Same price at every size

Metal

Solid 14K yellow gold: the warm yellow of our pictures. Compare the metals

The same ring in sterling silver, at one fixed price, our lowest. Silver darkens with time; a polishing cloth brings it back. Compare the metals

Same design, same 3D file, same casting: only the metal changes the price, never the size.

Find your size · Comfort-fit interior in the 3D design.

We cast the exact US size you pick; resizing after your order has a fee. Our sizing rule

Wide fit: this ring sits snugly, so we suggest half a size above your usual size.

Made and shipped within 15 business daysMade to order: about 2 to 3 weeks at the workshop, 15 business days at most (weekends and public holidays not counted), then carrier transit.

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The story of Octagon

The Assay Office

In 1851 the US Assay Office in San Francisco struck an octagonal fifty-dollar gold piece, the ’slug’. Octagon sets nugget relief in an eight-sided face inside a stepped polished frame.

In 1851 California was full of gold but had no federal coinage, and gold dust passed as money. In San Francisco, the United States Assay Office of Gold struck octagonal fifty-dollar pieces, assayed and stamped, known as slugs. In Australia, the Latrobe nugget, found in 1853, is a cluster of gold crystals. Octagon takes the shape of the slug: eight sides, a stepped frame and the nugget relief in the middle.

Description
  • Nugget relief fills an octagonal face inside a stepped polished frame. Broad polished shoulders lead into a plain band.
  • Part of The Assay Office: set inside a bar, an ingot or a stepped frame. See the collection

Octagon weight and dimensions

Estimated weight by US size
US size14K yellow goldSterling silver
US 6from 18.1 gfrom 14.3 g
US 8from 18.9 gfrom 15.0 g
US 10from 19.8 gfrom 15.6 g
US 12from 20.6 gfrom 16.3 g
US 14from 21.4 gfrom 16.9 g
Reference
No. 531
Registry
Numbered in the Originals registry

The ring

Metal
14K yellow gold
Weight in 14K, US 10
from 19.8 g
Weight in sterling silver, US 10
from 15.6 g
Top width, along the finger
16.0 mm
Band width at the base
4.5 mm
Height above the finger
3.5 mm
Interior
Comfort fit: slightly domed, rounded edges
Fit
Wide fit, half a size up
Wear
Occasion

Your order details identify the selected metal. Weights are estimated from the 3D file we cast from. How the estimate works · The rounded comfort-fit interior is part of the 3D design we cast from.

The nugget relief

Collection
The Assay Office
Relief
Set inside a bar, an ingot or a stepped frame
Profile
Bold: broader faces, fuller crowns
Casting
In one piece with the band, from the 3D file

Ordering

All our services

Making
Cast in your size after you order, in about 2 to 3 weeks. Making and shipping
Shipping
Free shipping in the US. Shipping terms
Returns
Rings without engraving, within 30 days of delivery. Returns and refunds
Size
The exact US size you pick; resizing after your order has a fee. Our sizing rule
Engraving
Up to 14 characters inside, $55; engraved rings cannot be returned. Engraving
Care
Mild soap for 14K gold, a polishing cloth for silver. Caring for your ring
Trade-in
A ring you return can be credited at its recovered metal value. How the credit is worked out

The IWMN experience

About the collection, the workshop and the gold

No. 531 Octagon nugget ring in 14K yellow gold, on a ledge of dark slate

The Assay Office

The Assay Office nugget collection: rings in solid 14K gold or sterling silver shaped like the bars, ingots, octagons and stepped frames of the assay trade, the nugget relief set inside them; most are nugget signet rings. At the assay office, loose gold was melted, tested for fineness and cast into stamped bars.

More from The Assay Office

The workshop

Our workshop makes engagement rings. It casts each nugget ring in your size after you order, from the 3D file I draw, and the certificate gives the metal and the estimated weight.

Our story

14K or silver

Solid 14K gold keeps the warm yellow of our pictures. Sterling silver is the same ring again. Each has one fixed price per design.

Compare the metals

Questions about Octagon

What size should I order in Octagon?

Half a size above your usual size: Octagon has a wide fit and sits snugly. We cast the exact US size you pick, 4 to 15, half sizes included.

Ring size chart

How much does Octagon weigh in my size?

In solid 14K gold, from 18.1 g at US 6, from 19.8 g at US 10, from 21.4 g at US 14; in sterling silver, from 15.6 g at US 10. The weights are estimated from the 3D file we cast from, and the weight table on this page gives more sizes.

How is Octagon different from Facet?

Both are in The Assay Office. Octagon: a top 16.0 mm wide along the finger, 3.5 mm high, from 19.8 g in 14K at US 10, marked Occasion. Facet: a top 15.3 mm wide along the finger, 4.9 mm high, from 19.0 g in 14K at US 10, marked Occasion.

No. 523 Facet

All nugget signet rings

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