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Bi-colour

Explore gemstones displaying two or more colours within a single stone, from dramatic colour zoning to subtle tonal shifts. This collection includes Australian parti sapphires, ametrine, and other unique gems that showcase nature’s remarkable ability to blend colours in unexpected ways.

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Sapphire

Nineteen48
£420.00 - £420.00
£420.00
£420.00 - £420.00
£420.00

£420.00 - £420.00
£420.00
£420.00 - £420.00
£420.00

Quartz

Nineteen48
£708.00 - £708.00
£708.00
£708.00 - £708.00
£708.00

A beautifully graduated ametrine (amethyst-citrine blend), this 11.13-carat gem shifts from soft yellow at one end to a pale purple at the other.

£708.00 - £708.00
£708.00
£708.00 - £708.00
£708.00

Quartz

Nineteen48
£540.00 - £540.00
£540.00
£540.00 - £540.00
£540.00

A large 10-carat quartz with dramatic colour zoning: amethyst purple on one side blending into a yellowish-clear band.

£540.00 - £540.00
£540.00
£540.00 - £540.00
£540.00

Sapphire

Nineteen48
£600.00 - £600.00
£600.00
£600.00 - £600.00
£600.00

Two untreated hexagon-cut sapphires from Queensland, Australia. Just under one carat each. Bright yellow and blue colour combination. Buy separatel...

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£600.00 - £600.00
£600.00
£600.00 - £600.00
£600.00