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Gemstone Guide
What makes Gemstones precious and semi-precious, and why can't lab-grown stones be distinguished from natural ones? Learn in our brief article!

DIAMOND

Color: Colorless, Near Colorless, Faint Yellow, Very Light Yellow, Light Yellow, Fancy (usually blue, pink, yellow, Red etc.)

Mohs hardness scale: 10

Mineral Class: a mineral composed of pure carbon

Source – Found mainly in India

DIAMOND

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RUBY

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RUBY

Color: Bright red, brownish-red, purplish-red, dark red

Mohs hardness scale: 9

Mineral Class: Corundum

Source – Found mainly in Burma, Thailand, Sri Lanka and Tanzania

SAPPHIRE

Color: Blue, Yellow, Green, White, Colorless, Pink, Orange, Brown and Purple

Mohs hardness scale: 9

Mineral Class: Corundum

Source – Found mainly in Sri Lanka, Thailand, Burma, Australia, India, Brazil and Africa

SAPPHIRE

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EMERALD

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EMERALD

Color: Emerald Green to Dark Green

Mohs hardness scale: 7.5 – 8

Mineral Class: Beryl

Source – Found in Columbia, Brazil, Zimbabwe, South Africa, Afghanistan, USA

AMETHYST

Color: Purple, Pale lavender to deep reddish purple, bluish violet

Mohs hardness scale: 7

Mineral Class: Quartz

Source – Found mainly in Sri Lanka, Brazil, Burma, Canada, East Africa, India, North America, Russia, Uruguay, Madagascar and Australia

AMETHYST

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TOPAZ

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TOPAZ

Color: Blue, Brown, Green, Orange, Pink, Red, Yellow, White, Gold, Colorless

Mohs hardness scale: 8

Mineral Class: Topaz

Source – Found mainly in Brazil, Sri Lanka, Burma, Nigeria, USA, Australia, Madagascar and Mexico

GARNET

Color: Light Red, Violet, Red, White, Green, Yellow, Brown, Black

Mohs hardness scale: 6.5-7.5

Mineral Class: Quartz

Source – Found mainly in Burma, Sri Lanka, South Africa, China, USA, Tanzania, Madagascar, India and Australia

GARNET

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CITRINE

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CITRINE

Color: Light Yellow, Lemon Yellow, Amber-Brown, Brilliant Orange

Mohs hardness scale: 7

Mineral Class: Quartz

Source – Found mainly in South America, Brazil, Madagascar, Argentina, Russia, Scotland and Spain

ALEXANDRITE

Color: Dark to Pale Green (color changes in different forms of light)

Mohs hardness scale: 8.5

Mineral Class: Chrysoberyl

Source – Found mainly in Russia, Sri Lanka, Brazil, Burma, Madagascar, USA

ALEXANDRITE

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PERIDOT

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PERIDOT

Color: Yellow Green, Olive, Brownish Green

Mohs hardness scale: 6.5 – 7

Mineral Class: Olivine

Source – Found mainly in Australia, Mexico, Sri Lanka, South Africa, Tanzania, China, Burma, Arizona, USA, Pakistan, Afghanistan

TOURMALINE

Color: Black, Red, Pink, Blue, Green, Grey and Yellow

Mohs hardness scale: 7 – 7.5

Mineral Class: Quartzite

Source – Found mainly in Brazil, Sri Lanka, South Africa, Nigeria, Zimbabwe, Kenya, Tanzania, Mozambique, Madagascar, Pakistan, Afghanistan, USA

TOURMALINE

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TANZANITE

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TANZANITE

Color: Deep Blue, Ultramarine Blue, Light Violet-Blue, Purple

Mohs hardness scale: 6 – 7

Mineral Class: Quartz

Source – Found in Tanzania

OPAL

Color: Black, White, Gray, Yellow, Red, Orange and Colorless

Mohs hardness scale: 5 – 6.5

Source – Found mainly in Australia, Brazil, Mali, Japan, Russia, USA, Mexico

OPAL

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ONYX

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ONYX

Color: Black, White, Black with White bands, Red, Brown

Mohs hardness scale: 6.5 – 7

Mineral Class: Quartz

Source – Found mainly in Madagascar, India, Brazil, United States, Pakistan and Sri Lanka

PEARL

Color: White, White tinted with Cream, Pink, Yellow, Green, Blue, Brown, Purple, or Black.

Mohs hardness scale: 2.5 – 4.5

Source – Found mainly in Persian Gulf, China Sea

PEARL

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AQUAMARINE

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AQUAMARINE

Color: Blue, Sea-green

Mohs hardness scale: 7.5 – 8

Mineral Class: Beryl

Source – Found mainly in Brazil, Madagascar, Russia, Afghanistan, India, Pakistan, Nigeria, Zambia, Mozambique and USA