16-20mm gemstones

Amethyst 18x15mm Rectangular Cut Gemstone

Amethyst 18x15mm Rectangular Cut Loose Gemstone 10 mm profile 22.95 ct / 4.59 g ..

£45.90

Amethyst 19x14mm Fantasy Drop Cut Gemstone

Amethyst19x14mm Fantasy Drop Cut Loose Gemstone 9mm profile10.90ct / 2.18g ..

£36.75

Amethyst 19x16mm Trillion Cut Gemstone

Amethyst 19x16mm Trillion Cut Loose Gemstone 13 mm profile 20.15 ct / 4.03 g ..

£60.45

Amethyst 20x12mm Rectangular Faceted Gemstone

Amethyst 20x12mm Rectangular Faceted Loose Gemstone 9mm profile18.15 ct / 3.63 g..

£18.99

Ametrine 19x17mm Drop Cut Gemstone Cabochon

Ametrine 19x17mm Drop Cut Loose Gemstone Cabochon 8.5 mm profile 19.60 ct / 3.92 g&nb..

£5.90

Ametrine 20x17mm Triangular Gemstone Cabochon

Ametrine 20x17mm Triangular Loose Gemstone Cabochon 8 mm profile 19.25 ct / 3.84 g..

£5.75

Aquamarine 16x11mm Oval Gemstone Cabochon

Aquamarine 16x11mm Oval Gemstone Cabochon 9 mm profile 14.25 ct / 2.85 g ..

£3.55

Aquamarine 17mm Round Cabochon

Aquamarine 17mm Round Loose Gemstone Cabochon 6.5 mm profile 15.90 ct / 3.13 g ..

£3.90

Black Sunstone 16mm Square Cabochon

Black Sunstone 16mm Square Loose Gemstone Cabochon 6 mm profile 15.50 ct / 3.10 g ..

£3.50

Blue Aventurine 20mm Round Cabochon

Blue Aventurine20mm Round Loose Gemstone Cabochon 5 mm profile, approx. 16.5 ct / 3.3 g, a..

£3.50

Blue Opal 18x14mm Drop Cut Cabochon

Blue Opal 18x14mm Drop Cut Loose Gemstone Cabochon 4.5 mm profile 6.35 ct / 1.27 g&nb..

£3.50

Chrysoprase 19x17mm Rectangular Cabochon

Chrysoprase 19x17mm Rectangular Loose Gemstone Cabochon 8 mm profile 27.35 ct/ 5.47 g..

£17.85

Chrysoprase 19x17mm Rectangular Cabochon

Chrysoprase 19x17mm Rectangular Loose Gemstone Cabochon 5.5 mm profile 18.95 ct / 3.7..

£12.35

Citrine 16x11mm Oval Cabochon

Citrine 16x11mm Oval Loose Gemstone Cabochon 7 mm profile 9.15 ct / 1.83 g ..

£13.75

Citrine 17x12mm Oval Cabochon

Citrine 17x12mm Oval Loose Gemstone Cabochon 7 mm profile 9.85 ct / 1.97 g ..

£14.80

Citrine 17x13mm Oval Cabochon

Citrine 17x13mm Oval Loose Gemstone Cabochon 6.5 mm profile 10.95 ct / 2.19 g ..

£16.50

Citrine 17x13mm Oval Cabochon

Citrine17x13mm Oval Loose Gemstone Cabochon 9 mm profile 14.55 ct / 2.91 g ..

£21.85

Citrine 18x10mm Emerald Cut Gemstone

Citrine 18x10mm Emerald Cut Loose Faceted Gemstone 9.5 mm profile 14.30 ct / 2.86 g&n..

£34.50

Citrine 18x15mm Emerald Cut Gemstone

Citrine 18x15mm Emerald Cut Loose Faceted Gemstone 11 mm profile 24.40 ct / 4.88 g&nb..

£58.50

Citrine 19.5x13.5mm Emerald Cut Gemstone

Citrine 19.5x13.5mm Emerald Cut Loose Faceted Gemstone 10.5 mm profile 23.60 ct / 4.7..

£56.65

Citrine 19x14mm Oval Cabochon

Citrine19x14mm Oval Loose Gemstone Cabochon 7.5 mm profile 14.65 ct / 2.93 g ..

£21.99

Citrine 20x14mm Emerald Cut Gemstone

Citrine 20x14mm Emerald Cut Loose Faceted Gemstone 10 mm profile 24.75 ct / 4.95 g&nb..

£59.50

Citrine 20x15mm Emerald Cut Gemstone

Citrine 20x15mm Emerald Cut Loose Faceted Gemstone 8 mm profile 21.95 ct / 4.39 g&nbs..

£52.50

Fluorite 18x13mm Oval Gemstone Cabochon

Fluorite 18x13mm Oval Gemstone Cabochon 5 mm profile approx.10 ct / 2 gm approx...

£4.99

Green Chalcedony 20x14mm Trapezium Cut Gemstone Cabochon

Green Chalcedony20x14mm Trapezium Cut Gemstone Cabochon 4mm profile 10ct/2gm&n..

£3.50