Placer
No. 508 · The River
Solid 14K gold · from 16.6 g


The production 3D file, at real size, shown in 14K yellow gold. Drag to turn it.
Colours in 3D are computed live on your screen. The images beside it are renders of the same production file.




No. 101 · The Assay Office
A framed face, filled with relief. A tablet nugget ring in solid 14K gold or sterling silver.
The Assay Office
The Blanche Barkly nugget was about 28 inches long and only 1 to 2 inches thick.
On August 27, 1857, at Kingower in Victoria, four miners dug out a nugget 13 feet down. It was about 28 inches long but only 1 to 2 inches thick: more a plate of gold than a lump. Named the Blanche Barkly, after the governor’s daughter, it was shown at the Crystal Palace and then, according to an account one of its finders published in 1902, melted into sovereigns. Tablet is a flat plate of gold: a cushion-shaped face in a polished frame, filled with nugget relief, on smooth shoulders.
| US size | 14K yellow gold | Sterling silver |
|---|---|---|
| US 6 | from 15.4 g | from 12.1 g |
| US 8 | from 16.1 g | from 12.7 g |
| US 10 | from 16.8 g | from 13.3 g |
| US 12 | from 17.5 g | from 13.8 g |
| US 14 | from 18.2 g | from 14.4 g |
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 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 OfficeOur 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 storySolid 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 metalsHalf a size above your usual size: Tablet has a wide fit and sits snugly. We cast the exact US size you pick, 4 to 15, half sizes included.
In solid 14K gold, from 15.4 g at US 6, from 16.8 g at US 10, from 18.2 g at US 14; in sterling silver, from 13.3 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.
Both are in The Assay Office. Tablet: a top 15.6 mm wide along the finger, 3.5 mm high, from 16.8 g in 14K at US 10, marked Occasion. Monolith: a top 20.0 mm wide along the finger, 3.4 mm high, from 18.3 g in 14K at US 10, marked Occasion.
Made to order
Cast in your size after you order, by our workshop.
Making and shippingFree US shipping
Free shipping in the US.
Shipping30-day returns
Catalog rings without engraving, within 30 days of delivery.
ReturnsQuestions?
Ask before you order: sizing, metal, timing.
FAQ and contact