Black Onyx Gemstones

Black Onyx

ONX171
ONX171
1.77 ct.
8.0mm Round Cut
Black
Opaque
[D] Dyed.
One of a kind.
Black Onyx

ONX174
ONX174
1.17 ct.
7.2mm Round Cut
Black
Opaque
[D] Dyed.
One of a kind.
Black Onyx

ONX118
ONX118
45.49 ct. total
20.0mm Cabochon, Round Cut
Black
Opaque
[D] Dyed.
Quantity Available: 4 pairs
Black Onyx

ONX119
ONX119
0.16 ct. total
3.0mm Cabochon, Round Cut
Black
Opaque
[D] Dyed.
Only one pair available.
Onyx Chalcedony

ONX173
ONX173
2.52 ct. total
7.0mm Cabochon, Round Cut
Black
Opaque
[D] Dyed.
Only one pair available.
Black Onyx

ONX101
ONX101
11.60 ct. total
16.0x12.0mm Cabochon, Oval Cut
Black
Opaque
[E] Routinely enhanced.
Quantity Available: 2 pairs
Black Onyx

ONX166
ONX166
21.02 ct.
25.0x18.0mm Cabochon, Oval Cut
Black
Opaque
[N] Not enhanced.
Quantity Available: 4
Faceted.
Black Onyx

ONX141
ONX141
0.24 ct. total
3.0x5.0mm Cabochon, Pear Cut
Black
Opaque
[D] Dyed.
Only one pair available.
Black Onyx

ONX142
ONX142
0.40 ct.
4.0x6.0mm Cabochon, Pear Cut
Black
Opaque
[D] Dyed.
One of a kind.
Black Onyx

ONX132
ONX132
7.37 ct. total
10.0mm Cabochon, Square Cut
Black
Opaque
[N] Not enhanced.
Quantity Available: 10 pairs
Black Onyx

ONX145
ONX145
6.88 ct.
12.0mm Cabochon, Square Cut
Black
Opaque
[E] Routinely enhanced.
Quantity Available: 17
black Onyx

ONX133
ONX133
3.22 ct. total
12.0mm Cabochon, Trillion Cut
Black
Opaque
[N] Not enhanced.
Quantity Available: 5 pairs
Black Onyx

ONX172
ONX172
1.75 ct.
8.0mm Round, Checkerboard Top Cut
Black
Opaque
[D] Dyed.
~
Black Onyx SOLD

ONX170
ONX170
2.47 ct.
10.0x8.0mm Antique Cushion, Checkerboard Top Cut
Black
Opaque
[D] Dyed.
One of a kind.
Black Onyx

Calibrated Black Onyx

Specify size, shape and quality when ordering. Prices are subject to change without notice. Actual carat weight may vary from the average carat weight listed.

Black Onyx Quality A
Shape Size Avg. Weight Price Each
2mm
~
2.5mm
~
3mm
~
4mm
~
5mm
~
6mm
~
7mm
~
8mm
~
9mm
~
10mm
~
 
  A
5x3mm
~
6x4mm
~
7x5mm
~
8x6mm
~
9x7mm
~
10x8mm
~
11x9mm
~
12x10mm
~
14x12mm
~
 
  A
5x3mm
~
6x4mm
~
7x5mm
~
8x5mm
~
9x6mm
~
 
  A
4x2mm
~
5x2.5mm
~
6x3mm
~
7x3.5mm
~
8x4mm
~
9x4.5mm
~
10x5mm
~
11x5.5mm
~
12x6mm
~
14x7mm
~
 
  A
5x3mm
~
6x4mm
~
7x5mm
~
8x6mm
~
9x7mm
~
10x8mm
~
11x9mm
~
12x10mm
~
 
  A
4mm
~
5mm
~
6mm
~
 
  A
3mm
~
4mm
~
5mm
~
6mm
~
7mm
~
8mm
~
9mm
~
10mm
~
11mm
~
12mm
~
13mm
~
14mm
~
15mm
~
16mm
~
20mm
~
25mm
~
30mm
~
 
  A
5x3mm
~
6x4mm
~
7x5mm
~
8x6mm
~
9x7mm
~
10x8mm
~
11x9mm
~
12x10mm
~
13x11mm
~
14x10mm
~
14x12mm
~
16x8mm
~
16x12mm
~
16x14mm
~
17x10mm
~
18x13mm
~
20x15mm
~
22x8mm
~
25x18mm
~
30x22mm
~
40x30mm
~
 
  A
5x3mm
~
6x4mm
~
7x5mm
~
8x5mm
~
9x6mm
~
10x7mm
~
12x8mm
~
15x10mm
~
18x13mm
~
25x18mm
~
 
  A
12x10mm
~
 
  A
6mm
~
8mm
~
9mm
~
10mm
~
12mm
~
16mm
~
20mm
~
 
  A
5mm
~
6mm
~
9mm
~
10mm
~
 
  A
5mm
0.53
6mm
0.89
 
  A
8x6mm
1.19
9x7mm
1.81
10x8mm
2.50
 
  A
14x10mm
5.85
14mm
9.85
 
  A
5x3mm
~
6x4mm
~
7x5mm
~
8x6mm
~
9x7mm
~
10x8mm
~
11x9mm
~
12x10mm
~
13x11mm
~
14x10mm
~
14x12mm
~
16x8mm
~
16x12mm
~
18x13mm
~
20x15mm
~
 
  A
10x8mm
2.10
 
  A
7mm
1.18
8mm
1.71
 
  A
5mm
0.48
6mm
0.86
7mm
~
8mm
1.92
10mm
3.46
12mm
~
 
  A
8x6mm
1.19
9x7mm
1.72
10x8mm
2.38

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