Photos show stones from the current lot. Every stone you receive matches the size and grade you choose.
Calibrated · Black Onyx
Natural Loose Emerald Cut Faceted Black Onyx
Sold per stone. Pick a size and options; the price drops as you add more of the same stone.
- Free US shipping
over $35 - 30-day returns
- Ships to
50+ countries
- Gemstone
- Black Onyx
- Shape
- Emerald
- Quality
- Heirloom
- Style
- Single-Stone
- Treatment
- Treated
Make it into a piece
Settings that fit
Every setting here is made for this exact size. Change the size above and the list changes with it.
Your stone, actual size
Pendant and ring settings
Earring settings
Finish with a chain
All chains-
Venetian Box-Link Chain in Sterling Silver with Spring Ring clasp
From $140.84
-
14K Solid Gold FLEX Herringbone Chain – 2.8mm Wide, 18 Inch Flat Gold Chain, Real Gold Necklace for Women, Italian Herringbone Chain
$1,170.31
-
14K Gold 1 mm Solid Rope Chain
From $47.30
-
14K Gold 1.3 mm Cable Chain
From $1,177.70
Every size at actual size
At 100% zoom on a computer screen. Click a size to choose it.
About these stones
How we grade
A: lighter colour, visible inclusions. Good for fashion pieces and practice settings.
AA: even colour, some inclusions you can see up close. Everyday jewelry.
AAA: rich colour, eye clean. Fine jewelry.
AAAA: the top colour we cut, eye clean. Statement and heirloom pieces.
Market Basics or Precision
Market Basics: good outlines; sizes and depths vary a little stone to stone. Best value for settings you adjust by hand.
Precision: even outlines and matched depths. Drops into pre-notched castings and lines up in rows and halos.