Ruby

Ruby is the birthstone of July. It is a type of corundum, the same mineral as sapphire, and is a red gemstone. It is also said to be the representative of red gemstones, and has a long history of being cherished all over the world since ancient times. With a hardness of 9, it is the second hardest after diamond and is highly durable, making it a gemstone that can be enjoyed on a daily basis as jewelry.

Karatz GemMagazine
" Ruby "

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Pigeon Blood Ruby 0.320ct Loose AIGS

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Burmese Ruby 0.151ct Loose

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Myanmar Trapiche Ruby 0.150ct Loose

coming soon

[12551590] Ruby 0.282ct loose stone Sale price¥11,800

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Myanmar Trapiche Ruby 0.212ct loose stone

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Unheated Pigeon Blood Ruby 4.2mm/0.320ct Loose AIGS

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Ruby 0.230ct loose stone with precious stone

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Unheated Mozambique Ruby 2.8mm/0.118ct Loose

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Ruby 0.248ct loose stone with precious stone

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Ruby 0.171ct loose stone with precious stone

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Unheated Pigeon Blood Ruby 4.1mm/0.320ct Loose AIGS

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Ruby 0.221ct loose stone

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Unheated ruby 0.222ct loose stone

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Ruby 0.203ct loose stone

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Myanmar Trapiche Ruby 0.194ct loose stone

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Myanmar Ruby 0.465ct Loose

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Myanmar trapichel ruby 0.216ct loose

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Myanmar trapichel ruby 0.253ct loose

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Crimson Red Ruby from Thailand 0.930ct Loose GIA

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Ruby from Myanmar 0.427ct loose

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Twin Star Ruby 1.029ct rough stone from Ratnapura, Sri Lanka (Twin Star Ruby)

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Pigeon blood ruby 0.310ct loose AIGS

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Burmese unheated star ruby 0.661ct loose

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Pigeon blood ruby 1.180ct loose AIGS

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Ruby from Greenland 3.9mm/0.370ct loose with certificate

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Ruby from Greenland 3.9mm/0.332ct loose with certificate

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Ruby from Greenland 3.9mm/0.374ct loose with certificate

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Ruby from Greenland 3.9mm/0.373ct loose with certificate

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Ruby from Greenland 0.643ct loose with certificate

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Ruby from Greenland 0.544ct loose with certificate

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Ruby from Greenland 0.685ct loose with certificate

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Ruby from Greenland 0.440ct loose with certificate

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Ice ruby from Greenland (pink sapphire) 0.454ct loose with certificate

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Ruby from Greenland 0.452ct loose with certificate

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Unheated ruby from Mozambique 0.380ct loose GIA

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Ruby 0.678ct Ruth Japanese-German book

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Pigeon blood ruby 0.366ct loose Japanese-German book

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Ruby from Greenland 2.3mm/0.063ct loose with certificate

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Ruby from Greenland 2.3mm/0.056ct loose with certificate

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Ruby from Greenland 2.3mm/0.054ct loose with certificate

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Ruby from Greenland 2.3mm/0.056ct loose

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Ruby from Greenland 2.3mm/0.055ct loose with certificate

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Ice ruby from Greenland 3.4mm/0.193ct loose with certificate

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Star Ruby 0.886ct loose

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Ruby 0.169ct loose

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Ruby 0.143ct loose

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Ruby 0.153ct loose

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Ruby 0.121ct loose

KARATZ Custom Made

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments