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Precious
Emerald
Vivid green of Colombian valleys
Precious
Ruby
Pigeon-blood red, prized above all
Corundum
Blue Sapphire
Royal blue — Kashmir & Ceylon
Corundum
Yellow Sapphire
Jupiter's gemstone in Vedic lore
Corundum
Star Ruby
Six-rayed asterism in red corundum
Corundum
Star Sapphire
Celestial star locked in blue
Corundum
Multi Sapphire
Rainbow colours in one stone
Corundum
Alexandrite
Green by day, red by night
Corundum
Cat's Eye
Chatoyant chrysoberyl
Beryl
Aquamarine
Sea-blue beryl of the ocean
Beryl
Morganite
Rose-pink beryl, named for J.P. Morgan
Quartz
Amethyst
Purple quartz of serenity
Quartz
Citrine
Sunny yellow wealth stone
Quartz
Rose Quartz
Soft pink stone of love
Quartz
Smoky Quartz
Earthy brown protective stone
Quartz
Ametrine
Half amethyst, half citrine
Quartz
Green Amethyst
Rare prasiolite — green amethyst
Quartz
Mystic Quartz
Rainbow coated iridescent quartz
Quartz
Lemon Quartz
Bright lemon-yellow quartz
Quartz
Tiger Eye
Silky gold-brown chatoyant quartz
Quartz
Aventurine
Glittery green quartz of luck
Quartz
Golden Rutile
Gold needle inclusions in quartz
Quartz
Black Rutile
Black needle inclusions in quartz
Quartz
Blue Chalcedony
Soft sky-blue waxy quartz
Quartz
Green Moss Agate
Green moss patterns in agate
Quartz
Sliced Agate
Banded translucent agate slices
Organic
Pearl
Ocean's lustrous living gem
Organic
Coral
Red & pink treasure from the sea
Organic
Amber
Ancient tree resin fossilised
Organic
Mother of Pearl
Iridescent nacre from mollusc shells
Semi-precious
Tanzanite
Blue-violet from one Tanzanian hill
Semi-precious
Multi Tourmaline
Electric rainbow of colours
Semi-precious
Peridot
Volcanic lime-green olivine
Semi-precious
Spinel
Long mistaken for ruby
Semi-precious
Garnet
Deep blood-red Bohemian stone
Semi-precious
Hessonite
Honey-brown grossular garnet
Semi-precious
Tsavorite
Vivid green grossular garnet
Semi-precious
Rainbow Moonstone
Blue adularescence glow
Semi-precious
Labradorite
Aurora borealis in stone
Semi-precious
Amazonite
Turquoise-green feldspar
Semi-precious
Opal
Play of colour, queen of gems
Semi-precious
Peru Opal
Andean blue-green translucent opal
Semi-precious
Blue Topaz
Sky-blue stone of clarity
Semi-precious
London Blue Topaz
Deep steely-blue topaz
Semi-precious
Lapis Lazuli
Royal blue with golden pyrite
Semi-precious
Turquoise
Sky-blue Persian treasure
Semi-precious
Copper Turquoise
Turquoise matrix with copper veining
Semi-precious
Oyster Copper Turquoise
Rare oyster-shell copper turquoise
Semi-precious
Malachite
Swirling green copper stone
Semi-precious
Onyx
Black chalcedony, strength stone
Semi-precious
Kunzite
Lilac spodumene of California
Semi-precious
Kyanite
Blue bladed silicate mineral
Semi-precious
Larimar
Caribbean blue volcanic pectolite
Semi-precious
Moldavite
Rare green tektite of Czech forests
Semi-precious
Chrome Diopside
Vivid Siberian forest green
Education
Gemstone Forms
Rough, faceted, cabochon & carved
Education
Treatments & Certification
What labs look for & why it matters
Education
Gemstone Origin & Price
How origin affects value
Education
Rarity & Price
Why some gems cost more than others
Education
Carat Weight vs Size
Understanding size vs weight
Education
How to Buy Your First Gemstone
Beginner's buying guide