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Semi-Black Opals

Also known as dark opal and grey opal, semi-black opal refers to opals which have a darker body tone than white opals, yet are not quite dark enough to be classified as black opals. The body tone of these stones falls in either the N5 or N6 category in the above tone chart diagram. Semi black opals are found mostly at Lightning Ridge, however they have also been found at Mintabie in South Australia. To give a rough idea, top quality semi-black opal can fetch prices up to $3,500 per carat.

Examples of Semi-Black Opal

Current black opal stock

Here's a sample of the latest black opals currently available in our Australian opal catalogue:

Shop the latest from our range of Opals


ID #: 20192297
Solid Boulder Opal
$618.18 AUD (tax free)

ID #: 20192303
Solid Boulder Opal
$12,654.55 AUD (tax free)

ID #: 20192235
Solid Boulder Opal
$813.64 AUD (tax free)

ID #: 20192266
Solid Boulder Opal
$722.73 AUD (tax free)

ID #: 20192259
Solid Boulder Opal
$631.82 AUD (tax free)

ID #: 20192273
Solid Boulder Opal
$236.36 AUD (tax free)

SOLD
ID #: 20192242
Solid Boulder Opal
$690.91 AUD (tax free)

ID #: 20192228
Solid Boulder Opal
$5,409.09 AUD (tax free)

ID #: 20192211
Solid Boulder Opal
$8,709.09 AUD (tax free)

SOLD
ID #: 20143596
Solid Black Opal Ring
$827.27 AUD (tax free)

SOLD
ID #: 20191368x
Solid Boulder Opal Ring
$5,000.00 AUD (tax free)

ID #: 20192136
Solid Boulder Opal
$540.91 AUD (tax free)

ID #: 20192129
Solid Boulder Opal
$359.09 AUD (tax free)

ID #: 20192099
Solid Boulder Opal
$177.27 AUD (tax free)

ID #: 20192082
Solid Black Opal
$254.55 AUD (tax free)