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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

Capricorn Gems 3.7 x 3.7mm
£192.00 - £192.00
£192.00
£192.00 - £192.00
£192.00

Untreated sapphire from Queensland, Australia. Princess cut, 3.75 mm, with green and teal parti colouring.

£192.00 - £192.00
£192.00
£192.00 - £192.00
£192.00

Sapphire

Capricorn Gems 2.7 x 2.7mm
£52.80 - £52.80
£52.80
£52.80 - £52.80
£52.80

Selection of untreated Princess-cut sapphires from Queensland, Australia. Each approx. 2.5 mm. Colours range from light green to teal to deep blue.

£52.80 - £52.80
£52.80
£52.80 - £52.80
£52.80

Sapphire

Nineteen48 6.7 x 5.0mm
£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 15.5 x 10.6mm
£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 16.4 x 9.8mm
£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 7.0 x 6.0mm
£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