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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[Published on 12560214] Unheated Ruby 0.680ct Loose

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Ruby 0.589ct loose stone with certificate

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Mozambique Ruby 4.8mm/0.589ct Loose Stone with Certificate of Authenticity

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Sri Lankan Star Ruby 0.473ct Loose Stone with Certificate of Authenticity

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K18YG Colombian emerald 0.591ct ruby pendant (necklace)

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Pigeon Blood Ruby 0.940ct Loose GIA

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Ruby 0.302ct loose stone

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Ruby 0.245ct loose

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Pt950 Burmese Ruby 0.21ct Ruby Ring

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Myanmar trapichel ruby 0.288ct loose

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Crimson Red Ruby from Thailand 0.930ct Loose GIA

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Myanmar trapichel ruby 0.248ct rough stone

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[CP used?] Myanmar Trapiche Ruby 0.227ct rough stone

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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 0.685ct loose with certificate

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Pigeon blood ruby 0.366ct loose Japanese-German book

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Pigeon blood ruby 1.180ct loose AIGS

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Pigeon blood ruby 1.530ct loose AIGS

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Pigeon blood ruby 0.70ct loose AIGS

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Ruby from Greenland 0.726ct loose with certificate

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Unheated star ruby from Vietnam 1.490ct loose GIA

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Unheated ruby from Mozambique 0.270ct loose GIA

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Unheated ruby from Mozambique 0.240ct loose GIA

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Pigeon blood ruby 0.950ct loose AIGS

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Thai pigeon blood ruby 0.240ct loose (pear shape) AIGS

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Ruby from Burma 0.684ct loose (oval)

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Ruby from Burma 0.611ct loose (pear shape)

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Ruby from Burma 0.603ct loose (pear shape)

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Ruby 0.210ct loose (princess cut)

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Ruby 0.193ct loose (princess cut)

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Ruby 0.652ct loose (buff top)

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Thai pigeon blood ruby 0.430ct loose AIGS

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Burmese pigeon blood ruby 1.090ct loose

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Ruby 0.267ct Ruth Japanese-German book

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Ruby 0.240ct loose (taper cut) Japanese-German book

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Burmese unheated pigeon blood ruby 0.720ct loose GIA

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Ruby 0.133ct Ruth Japanese-German book

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Thai pigeon blood ruby 0.510ct loose AIGS

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[Colorful] K18 ruby 0.52ct ring

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【カラフリ】Pt900ルビー0.61ct・ダイヤモンド0.76ctリング - カラッツSTORE

[Colorful] Pt900 ruby 0.61ct/diamond 0.76ct ring

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K18PG ruby pinky ring

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K18 ruby pave ring

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K18 Blood Red Coral 1.12ct Ruby Ring

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Pt900ピジョンブラッドルビー 0.36ct リング AIGS - カラッツSTORE

Pt900 Pigeon Blood Ruby 0.36ct Ring AIGS

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Pt900/Pt850ピジョンブラッドルビー 0.39ct ペンダント（ネックレス） AIGS付 - カラッツSTORE

Pt900/Pt850 Pigeon Blood Ruby 0.39ct Pendant (Necklace) with AIGS

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K18ルビー0.12ct・エメラルド・ダイヤモンドペンダント（ネックレス） - カラッツSTORE

K18 ruby 0.12ct/emerald/diamond pendant (necklace)

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K18 ruby pink sapphire pendant (necklace)

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.

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZの取り組みと社会貢献

業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。

KARATZ Books

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.