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Deep green-blue baguette sapphire from Queensland, Australia.

Responsibly sourced blue, green, teal and chartreuses sapphire from Queensland, Australia. Untreated and cut into an oval shape, this gemstone weig...

A lovely, golden yellow, oval sapphire from an artisanal mine in Australia. This gemstone has not been heated or treated in any way.

Pale blue tapered baguette sapphire ethically sourced from Sri Lanka.

A selection of blue, light blue and pale blue sapphires ethically sourced from Sri Lanka.

This 0.5 carat, dark pink sapphire is the ideal size for a contemporary solitaire ring. The stone comes from an artisanal gem mine near Pohorabawa,...

A cool, green untreated sapphire from Tanga in Tanzania, sourced from an artisanal mine and cut in Sri Lanka.

At over 5 carats, this oval green sapphire from an artisanal mine in the Tanga region of north-eastern Tanzania is both big and beautiful. This out...

Blue to light blue step-cut sapphires responsibly sourced from Pohorabawa, Sri Lanka. 

Small, melee rubies ethically sourced from Pelmadulla, Sri Lanka. Each is approx 1.1mm. Intense red-pink colour, perfect for pave setting.

Flat-back, purple sapphire, ethically sourced from Pohorabawa, Sri Lanka.

Stunning cushion cut, deep blue, untreated sapphire, which was responsibly sourced from an artisanal mine near Ellawela, Sri Lanka.

Flat-back kite shape sapphires. Blue to pale blue colour.

Blue and pale blue trillion sapphires. Multiple to choose from, approx 4.1mm each.

Untreated green sapphire from Queensland, Australia, featuring an unusual trillion cut. At 1.20 carats and just over 6 mm across, this distinctive ...

A lovely, responsibly sourced sapphire. This sparkly gemstone comes from an artisanal mine in Queensland, Australia and is unheated.

A slightly elongated, green sapphire from Australia. Responsibly sourced and not treated in any way, this stone has a good colour and sparkle.

This sapphire has a strong green colour and an unusual cut, making it ideal for a distinctive ring.

A large, pink zircon from Queensland, Australia. This stone has not been treated in any way.