Opal.

Colour in a different light.

Smooth cabochon silhouettes let opal’s play of colour take the lead. Explore softly rounded and organic forms.

MulticolourHydrated silica4 illustrated silhouettes

Explore the selection

A small universe of shifting colour.ILLUSTRATIVE SHAPE STUDY

FIND YOUR SILHOUETTE

A different shape.
The same fascination.

Save what catches your eye. Ask about actual
stones, sizes, reports and individual pricing.

4 shapes to explore

Cabochon study

OPAL / OVAL

An elongated silhouette with soft, continuous curves.

Cabochon study

OPAL / ROUND

A balanced circular silhouette with a timeless presence.

Cabochon study

OPAL / PEAR

A graceful teardrop silhouette, balancing a point with a rounded curve.

Cabochon study

OPAL / FREEFORM

An organic outline that celebrates an individual shape.

These images illustrate gemstone shapes. Availability, carat weight, origin, treatments, reports and prices are confirmed for each actual stone.

SHAPE, CUT & SIZE

Your stone.
Your proportions.

From familiar silhouettes to something entirely individual.
Build a request around the details that matter to you.

Find your silhouette

30 shape families + a custom option

Outlines are diagrams, not stone photographs. Shape names sometimes include a cutting style. Suitability depends on the gem material, rough and intended design.

Consider the cut

Preferred cutting style

A step cut emphasises clean geometry; a cabochon has a smooth, domed surface. Star and cat’s-eye effects usually need an appropriately oriented cabochon.

Set your size preferences

Weight / quantity preference

Dimensions / calibrated size

Carat measures weight: 1 ct = 0.2 g. Millimetres describe dimensions. Equal carat weights can look different across materials, shapes and proportions.

Opal · OvalAny weight / help me choose · No fixed dimensions

These are request options, not a list of available sizes. Any weight, dimensions, matching set or specialist cut can be requested; availability and suitability are confirmed individually.

GIA: coloured stone cutting GIA: carat weight & size

A CLOSER LOOK

The character
of opal.

Precious opal can display play-of-colour, produced as light interacts with its internal arrangement of silica spheres.

Explore GIA’s opal reference Educational reference only. It does not certify the illustrations or imply a business affiliation.

Opal.

Colour in a different light.

A different shape.
The same fascination.

Oval Opal

Round Opal

Pear Opal

Freeform Opal