The opal ring also holds eleven round brilliant cut diamonds bead set around each end and one round brilliant cut diamond bead set over each shoulder above a 4 mm to 3 mm wide by 2 mm to 1 mm thick squared edge band.

The twenty-two diamonds in the ends gauge as 2.3 to 2.5 mm in diameter each and the two bezel-set diamonds are 3.4 mm in diameter each. The twenty-four diamonds weigh a stated 1.63 carats combined and are (SI1-SI2) clarity and (I-J) color. The opal measures approximately 25.9 mm long by 19.7 mm wide by 6.5 mm thick and was weighed while un-mounted as 20.37 carats. It has blue green broadflash play-of-color and level 4-1/2 fire on a scale of 5 with very good polish and very good symmetry. The ring is stamped inside the band 18K G and is hand-crafted; it weighs 19.0 grams in total.

Yours for £14,700

Oval cabochon natural opal natural black opal ring. Estimated 2.75 to 3 ct Opal. Extremely rare brightly colored genuine opal ring in a top quality designer hand made setting. 18 diamonds join the setting for a stunning opal ring. The diamonds are colorless and near flawless with a total diamond weight of approx 1.15ct, colours E to F, diamond quality VVS. Size 5 7/8 but this ring is resizable.

A stunning opal ring. Yours for £12,430

Constant colour moves through the body of this gorgeous opal in a 3 dimensional play-of-colour. The absolute brilliant colours just sparkle at the very slightest of movement.

Green and orange is captured in a never ending display moving between a hue of purple. The opal is even prettier in real life.

£2,400

Semi Black Opal

This beautiful LARGE TOP QUALITY opal is absolutely loaded with bright colours, showing a FLAG HARLEQUIN pattern. The fire ranges from sparkling red and orange to green and blue. The colours are always moving bright and sparkly as the opal is turned. The colourful show this stone puts on is spectacular to say the very least. The opal is far more sparkly in reality with a play-of-colour that is always showing its full potential. Away from direct light, there is much more red which the camera didn’t pick up. Works just as well, if not better in lower light.

£3,600

Harlequin Black Opal

The bright colors dance all over this gemstone, making this stunning solid opal most suited to be set into a ring, though it would look equally as stunning in a magnificent designer pendant. This is a big natural solid black opal measuring 21.90mm X 14.80mm X 4.20mm thick, and it weighs 9.35 carats.

£4,900

6.6 Ct Black Opal

Opal Type: Solid Lightning Ridge BLACK Opal

Opal Source: Lightning Ridge – Australia

Weight: 6.6 Carats

Size Dimensions: 13.5mm x 11mm x 6mm (Dome)

Color/Pattern: Amazing Red / Orange / Gold / Green Colorplay flash … spectacular all over face color. Best orientation for a designer pendant or ring. Solid natural Black Opal. Ready to set. Every opal is unique, making it rare and very valuable.

£4,650

We are reluctant to cut such a rare and beautiful piece, which is a museum quality piece of opal.

Type of Opal: Solid unique Boulder Opal Specimen

Mining Field: Quilpie (Australia)

Opal Dimensions: 170mm x 120 mm

Total Weight: 1.05 Kilograms (2 1/4 lbs)

Pattern: Aqua Blue/Green/Pink/Red & Light

This piece is an absolute bargain at £42,000 and has a retail value in the region of £250,000

Type of Opal: Solid Black Opal

Mining Field: Lightning Ridge (Australia)

Opal Dimensions: 21mm x 13mm

Total Weight: 10.8 Carats

Pattern: Green/Blue with Golden Flash

The recommended retail price of this opal is £22,000 – but only £11,200 from a wholesaler.

Weight: 33.96 ct

Measurements: 30 x 23 x 7mm

Body-tone: N/2

Brightness: 5/5

£24,370

£14,210