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diamond

Diamond is the birthstone of April. This gemstone is sometimes called the king of gemstones. It is said to be the hardest gemstone on earth, and its strong shine is exceptionally beautiful. Colorless is the most common, but it comes in a variety of shades including yellow, pink, blue, orange, and green.

Karatz GemMagazine
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Sold out イエローダイヤモンド 3mm/0.107ctルース(FANCY VIVID ORANGY YELLOW, SI-2)
Sold out K18 diamond 0.172ct ring (D/SI-1/clover diamond)
Sold out 南アフリカ産ダイヤモンド 0.283ct原石
Sold out Diamond from South Africa (makeable) 0.184ct rough stone
Sold out Diamond from South Africa (Makable) 0.153ct rough stone (Trigon)
Sold out South African diamond (makeable) 0.170ct rough stone
Sold out 【32501566掲載】ピンクダイヤモンド 0.072ctルース(FANCY DEEP PURPLE PINK, I1)
Sold out 【32501564掲載】ピンクダイヤモンド 0.047ctルース(FANCY INTENSE PURPLISH PINK, I-1)
Sold out Pink diamond 0.105ct loose (FANCY DEEP PINK, I-1)
Sold out ダイヤモンド 0.138ctルース(F, VS-1)
Sold out イエローダイヤモンド 0.188ctルース(FANCY INTENSE ORANGY YELLOW, SI2)
Sold out ダイヤモンド 0.117ctルース(D, VS2)
Sold out ダイヤモンド 0.170ctルース(E, VS2)
Sold out イエローダイヤモンド 0.157ctルース(FANCY VIVID ORANGY YELLOW, VS1)
Sold out イエローダイヤモンド 0.155ctルース(FANCY VIVID ORANGY YELLOW, VS1)
Sold out Lab-grown diamond (synthetic diamond) & natural diamond 2 stone set 1.8mm/0.045ct loose (H&C, VS class equivalent)
Sold out 【32501565掲載】ピンクダイヤモンド 0.164ctルース(FANCY DEEP PURPLE PINK, VS2)
Sold out Gray Diamond 3mm/0.109ct Loose (VERY LIGHT GRAY, SI-1)
Sold out Yellow Diamond (Treatment) 0.363ct Loose (FANCY DEEP GREENISH YELLOW, VS-2)
Sold out Pink diamond 0.054ct loose (FANCY PURPLE PINK, I1)
Sold out Pink diamond 0.052ct loose (FANCY PURPLE PINK, I1)
Sold out Pink diamond 0.047ct loose (FANCY PURPLE PINK, I1)
Sold out Pink diamond 0.054ct loose (FANCY DEEP PURPLE PINK, I1)
Sold out Pink diamond 0.037ct loose (FANCY LIGHT PURPLISH PINK, I-1)
Sold out Pink diamond 0.038ct loose (FANCY PINK PURPLE, VS1)
Sold out Purple Diamond 0.035ct Loose (FANCY PINKISH PURPLE, I-1)
Sold out Pink diamond 0.031ct loose (FANCY LIGHT PURPLISH PINK, SI-2)
Sold out Pink diamond 0.030ct loose (FANCY LIGHT PURPLISH PINK, SI-1)
Sold out Pink diamond 0.081ct loose (FANCY LIGHT PURPLISH PINK, SI-2)
Sold out 【32501526掲載】ピンクダイヤモンド 0.043ctルース(FANCY INTENSE PINK PURPLE, I-1)
Sold out ピンクダイヤモンド 0.081ctルース(FANCY PINK PURPLE, I-1)
Sold out ピンクダイヤモンド 0.057ctルース(FANCY INTENSE PURPLE PINK, I1)
Sold out グレーダイヤモンド 3mm/0.109ctルース(VERY LIGHT GRAY, SI-1)
Sold out グレーダイヤモンド 0.073ctルース(VERY LIGHT GRAY, SI-2)
Sold out ピンクダイヤモンド 0.133ctルース(FANCY INTENSE PURPLE PINK, I-1)
Sold out Pink diamond 0.150ct loose (FANCY LIGHT PURPLE PINK, I-1)
Sold out Pt900アイスブルーダイヤモンド0.409ct ピアス - カラッツSTORE
Sold out レッドダイヤモンド(トリートメント) 0.051ctルース(FANCY PURPLISH RED, SI1)
Sold out 【32501464掲載】レッドダイヤモンド(トリートメント) 0.048ctルース(FANCY PURPLISH RED, SI1)
Sold out レッドダイヤモンド(トリートメント) 0.049ctルース(FANCY PURPLISH RED, I1)
Sold out ダイヤモンド3石セット  1.8mm/0.092ctルース
Sold out ジンバブエ産ダイヤモンド原石(ソーヤブル) 0.038ct原石
Sold out ジンバブエ産ダイヤモンド原石(ソーヤブル) 0.055ct原石
Sold out ジンバブエ産ダイヤモンド原石(ソーヤブル) 0.066ct原石
Sold out ジンバブエ産ダイヤモンド原石(ソーヤブル) 0.066ct原石
Sold out ジンバブエ産ダイヤモンド原石(ソーヤブル) 0.067ct原石
Sold out ジンバブエ産ダイヤモンド原石(ソーヤブル) 0.067ct原石
Sold out グリーンダイヤモンド(トリートメント) 3.5mm/0.176ctルース(LIGHT BLUE GREEN*, VS-2)

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.