Onyx Jacket Button
18K Gold · Natural Black Onyx
$2,750 each
A domed natural black onyx, set into solid 18K gold or 925 sterling silver, with a U-shaped sewing shank on the back. Two sizes: 20 mm for jacket fronts, 15 mm for jacket sleeve cuffs. Sold individually: choose the quantity you need.
Crafted to order in 4–6 weeks.
Metal: 18K White Gold
Size: 20 mm · Jacket front
Material & Details
- Material
- Solid 18K Gold (750)
- Size
- 20 mm · Jacket front
- Dimensions
- 20 mm: approx. 19.5 mm diameter × 5.4 mm thick · 15 mm: 15 mm diameter
- Stone
- Natural Black Onyx
- Finish
- High mirror polish, with a polished, domed onyx center
- Construction
- Natural black onyx set into solid 18K gold with a U-shaped sewing shank on the back.
- Hallmark
- LGJ diamond hallmark · 750 · 18K
Made to Order
Every piece is made to order in 4–6 weeks. Nothing sits in stock.
Every piece carries the LGJ diamond hallmark.
Presented in an LGJ presentation box with a product and care card.
The card includes the product name, material, stone details where applicable, and care instructions.
