Untreated

Responsibly sourced from Queensland, Australia, this untreated yellow and gold zircon weighs 2.00 carats and is cut into a cushion shape measuring ...

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.

A great selection of oval sapphires measuring approx 5x3mm. Choose from yellow, blue, green or teal.

A vibrant yellow sapphire in an almost princess-style cut.Measuring 5.1 x 3.9mm, this untreated stone weighs just over half a carat and has bright,...

Pretty yellow sapphires responsibly sourced from Sri Lanka.

Pair of untreated round sapphires from Queensland, Australia. Intense yellow with chartreuse undertones. 4.2 mm each.

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

Untreated blue and yellow flat-back sapphire from Queensland, Australia. Oval cut and weighing 1.48 carats, this gemstone measures 9.5 x 7.2 mm and...

Responsibly sourced from Queensland, Australia, these untreated sapphires measure approximately 2.75 mm, are cut in a ...

Sold as a pair.