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An unheated, Australian sapphire, cut into a pretty pear shape. This responsibly sourced gemstone has plenty of sparkle and a lovely colour.

A responsibly sourced parti sapphire from an artisanal mine in Queensland, Australia.

A responsibly sourced bi-colour sapphire from an artisanal mine in Queensland, Australia. 

A responsibly sourced parti sapphire from an artisanal mine in Queensland, Australia.

Untreated sapphire from Queensland, Australia, weighing 0.81 carats. It has a soft pastel yellow with delicate blue tinting at the corners, giving ...

A bright pink sapphire with a nice square-cushion shape.

Brilliant-cut, untreated sapphire in a pale apricot tone with warm sparkle. Weighs 1.34 carats and has a lovely "glow".

A responsibly sourced, untreated, pink sapphire from a gem mine near Pohorabawa, Sri Lanka. This stone has a vibrant colour with plenty of sparkle.

Bright oval sapphires, each measuring approximately 6 x 4.5mm.

A responsibly sourced, fancy cut sapphire from an artisanal mine in Queensland, Australia. The stone shows different shades of green when viewed fr...

A dark pink sapphire from an artisanal gem mine near Pelmadulla, Sri Lanka.

Emerald-cut ruby with a paler centre and stronger colour at each end. A pretty stone that appears fairly clean.

Round ruby with an orangish pink colour. Approximately 4.8 mm, weighing 0.48 ct.

Emerald-cut ruby with a lovely purplish colour and some small inclusions. Approximately 6 × 4 mm, weighing 0.60 ct.

Square octagonal-cut ruby with a dark pink colour. Well cut and quite symmetrical, with excellent sparkle and a lively appearance.

Cushion-cut ruby with a very deep red colour. Approximately 6 × 4 mm, weighing 0.78 ct.

Beautiful emerald-cut ruby with a strong colour and a good cut. Measures just under 6 × 4 mm.

Baguette-cut ruby with deeper, more vivid red colour at the ends and a lighter pink centre. Fairly well cut, though slightly asymmetrical, and quit...

Square octagonal-cut pinkish ruby with small inclusions at one corner. A lively stone with a lovely pinkish red colour.

Baguette-cut ruby with an orangish red colour. Quite a clean stone, with lovely flashes of orange and slightly darker red at each end. Weighs 0.77 ct.

Emerald-cut stone on the borderline between pink sapphire and ruby, with a distinctly pink colour and slightly darker ends. Measures just under 6 ×...

Square octagonal-cut ruby with a vivid pinkish red colour and a slightly small table. Fairly well cut, with one slightly irregular corner.

Very lively, sparkly round ruby with a pinkish colour. Just under 5 mm, weighing 0.54 ct.

Round ruby with a distinctly pinkish colour and a slightly asymmetrical cut.

Square-cut ruby with a pinkish colour and sharp corners, weighing 1.10 ct. A fairly visible black inclusion and some other inclusions are reflected...

Oval ruby with a deep pinkish colour, a reasonably good cut and a lively appearance.

Square octagonal-cut ruby with a beautiful deep, slightly purplish red colour. Just under 5 mm square, weighing 0.85 ct.

Round pinkish ruby with a less refined cut and one noticeable inclusion, but plenty of sparkle. Just under 5 mm.

Round pinkish ruby with a slight orange tinge. Nicely cut with plenty of sparkle.

Well-cut round ruby with a pinkish colour and plenty of sparkle. A pretty stone that would make a lovely engagement ring.

Oval ruby with a well-saturated pinkish red colour. Fairly clean, with some sparkle as it moves, though less lively overall. Approximately 6 × 4.6 mm.

Round gemstone with a vivid, deep purplish colour and a lovely sparkle. The cut is slightly asymmetrical.