Birthstone list

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Colombian emerald 3.1mm/0.092ct loose

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Colombian emerald 3.3mm/0.113ct loose

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Colombian emerald 0.067ct loose (Mariposa)

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Colombian bicolor emerald 0.100ct loose (Gotateateise)

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[Mr. Sanjay] Rubellite 0.474ct loose

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[Mr. Sanjay] Tanzanite 0.545ct loose

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[Mr. Sanjay] Bicolor tanzanite 0.543ct loose

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[Mr. Sanjay] Almandine Garnet 1.133ct loose

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【32501566掲載】ピンクダイヤモンド 0.072ctルース(FANCY DEEP PURPLE PINK, I1)

Pink diamond 0.072ct loose (FANCY DEEP PURPLE PINK, I1)

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【32501564掲載】ピンクダイヤモンド 0.047ctルース(FANCY INTENSE PURPLISH PINK, I-1)

Pink diamond 0.047ct loose (FANCY INTENSE PURPLISH PINK, I-1)

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Paraiba tourmaline from Brazil 4.1mm/0.344ct loose

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Bekily Blue Garnet from Madagascar (color change garnet) 0.507ct loose

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Pink diamond 0.105ct loose (FANCY DEEP PINK, I-1)

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Diamond 0.138ct loose (F, VS-1, trapeze cut)

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Malayan garnet from Tanzania 0.647ct loose

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Malayan garnet from Tanzania 0.641ct loose

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Malayan garnet from Tanzania 0.576ct loose

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Paraiba tourmaline from Brazil 0.034ct loose

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Demantoid garnet 22.914ct rough stone from Madagascar

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Demantoid garnet 15.349ct rough stone from Madagascar

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Demantoid garnet from Madagascar 44.971ct rough stone

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イエローダイヤモンド 0.188ctルース(FANCY INTENSE ORANGY YELLOW, SI2)

Yellow diamond 0.188ct loose (FANCY VIVID ORANGY YELLOW, VS1)

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Diamond 0.117ct loose (D, VS2, octagonal cut)

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Diamond 0.170ct loose (E, VS2, Flemish cut)

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イエローダイヤモンド 0.157ctルース(FANCY VIVID ORANGY YELLOW, VS1)

Yellow diamond 0.157ct loose (FANCY VIVID ORANGY YELLOW, VS1)

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イエローダイヤモンド 0.155ctルース(FANCY VIVID ORANGY YELLOW, VS1)

Yellow diamond 0.155ct loose (FANCY VIVID ORANGY YELLOW, VS1)

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Colombian trapiche emerald (reverse trapiche) 0.152ct rough stone

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Colombian Trapiche Emerald (Reverse Trapiche) 3mm/0.132ct Rough Stone

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Colombian trapiche emerald (reverse trapiche) 3.4mm/0.130ct rough stone

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Bekily Blue Garnet from Madagascar (color change garnet) 2.6mm/0.101ct loose

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Bekily Blue Garnet from Madagascar (color change garnet) 2.6mm/0.098ct loose

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Bekily Blue Garnet from Madagascar (color change garnet) 2.6mm/0.101ct loose

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Paracytic peridot 0.062ct loose

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[KEN] Pink tourmaline from Mozambique 1.111ct loose

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Paraiba tourmaline from Brazil 0.384ct loose

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Paraiba tourmaline from Brazil 0.154ct loose

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[Mr. Sanjay] Green tourmaline 0.573ct loose

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[Mr. Sanjay] Pink tourmaline 0.362ct loose

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Paraiba tourmaline from Brazil 3.6mm/0.188ct loose

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Paraiba tourmaline from Brazil 3.4mm/0.181ct loose

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Paraiba tourmaline from Brazil 0.371ct loose

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[Dandelion cut] Sky blue topaz (untreated) 8mm/2.320ct loose

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Lab-grown diamond (synthetic diamond) & natural diamond 2 stone set 1.8mm/0.045ct loose (H&C, VS class equivalent)

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Aventurine Aquamarine Cat's Eye 1.524ct Loose

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マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.571ctルース

Andesine Labradorite from Madagascar (commonly known as Rainbow Moonstone) 0.571ct loose

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マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.549ctルース

Andesine Labradorite from Madagascar (commonly known as Rainbow Moonstone) 0.549ct loose

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マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 2.245ctルース

Andesine Labradorite from Madagascar (commonly known as Rainbow Moonstone) 2.245ct loose

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Paraiba tourmaline from Brazil 2.5mm/0.169ct 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