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No. 531 Octagon nugget ring, three-quarter view, sterling silver, rendered from the production 3D file
No. 531 Octagon nugget ring, the nugget pattern, face on, sterling silver, rendered from the production 3D file
No. 531 Octagon nugget ring, underside, the inside of the band, sterling silver, rendered from the production 3D file

Image rendered from the 3D file we cast from.

No. 531 · The Assay Office

Octagon

An octagonal face in a stepped frame.

  • Occasion
  • 3.5 mm above the finger
$395

16.7 to 17.3 gof solid sterling silver at US 10

Weighed after polishing; the exact weight is on your certificate.

Same price at every size

Metal

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

The same ring in sterling silver, covered in 18K gold, at one fixed price. The gold layer can wear with use. Compare the metals

The same ring in sterling silver, at our lowest fixed price. 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.

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More from The Assay Office

All of The Assay Office
The story

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, most of them octahedrons with eight faces. 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
Details
  • Made to order in your size, US 4 to 15, half sizes included
  • Cast by my uncle’s workshop after you order, in about 2 to 3 weeks
  • Certificate with the metal and the cast weight: how to tell if a nugget ring is real
Reference
No. 531
Registry
Numbered in the Originals registry

The ring

Metal
Sterling silver
Weight in 14K, US 10
21.1 to 21.9 g
Weight in silver or vermeil, US 10
16.7 to 17.3 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. The weight is estimated from the 3D file we cast from. A cast ring comes out 2 to 3% lighter than its file, and the range shown already includes this. Your price is fixed when you pay and is never adjusted to the weight; your certificate records the actual weight. The interior is measured on the 3D design; finished samples still need workshop verification.

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
Shipping and returns

All our services

Shipping
Made to order: cast in your size after you order. Workshop time: about 2 to 3 weeks, then carrier transit. Free shipping in the US.
Changes
Before casting starts, changing the size or the engraving is free: reply to your order email. Changing the metal, or a change that needs a new casting once casting has started, means a new production cycle and is charged. We confirm the cost with you before doing anything.
Returns
A catalog ring without engraving can be returned for a refund within 30 days of delivery. Engraved rings and rings modified at your request cannot be returned. You pay the return shipping, and a ring that does not come back in its original condition is refunded minus its loss in value. Returns and resizing

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The IWMN experience

Your size

I don’t know my size

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

Not sure of your size?

Find your size at home

Print our ring sizer (PDF)

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

Our services

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

At the assay office, loose gold was melted, tested for fineness and cast into stamped bars. These rings take the shapes of that trade: bars, ingots, octagons and stepped frames, with the nugget relief set inside them.

More from The Assay Office

My uncle’s workshop

My uncle runs a jewelry workshop and makes engagement rings for brides. I develop the designs; each one is a 3D file, measured for its weight in every metal and size. His workshop casts the ring in your size after you order, and the certificate gives the metal and the cast weight.

Our story

14K, vermeil or silver

14K keeps the warm yellow of our pictures, and its price follows the gold price. Vermeil is the same ring in sterling silver covered with 18K gold, and sterling silver is the same ring again. Sterling silver and vermeil have a fixed price per design.

Compare the metals
All nugget signet rings