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color diamond

Diamond is the birthstone of April. Diamonds with a deep color are collectively called fancy color diamonds. It has various shades such as yellow, brown, pink, blue, green, and orange. Rare items such as red and blue can often be traded for billions of yen or more, depending on the color depth and size.

Karatz GemMagazine
" Colored Diamond "

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Sold out ラボグロウンダイヤモンド(合成ダイヤモンド) 0.290ctルース(FANCY INTENSE YELLOW, VVS-2)
Sold out  ミントグリーンダイヤモンド(トリートメント) 0.298ルース(FANCY INTENSE GREEN, VS1)
Sold out Pink diamond 0.038ct loose (FANCY PINK PURPLE, VS1)
Sold out K18ピンクダイヤモンド0.157ct ペンダント(VERYLIGHTPINK/SI-1) - カラッツSTORE
Sold out ファンシーパープリッシュピンクダイヤモンド 0.030ctルース(FANCY PURPLISH PINK, SI2)
Sold out 【カラフリ】Pt900/Pt850イエローダイヤモンド0.301ct ペンダント(ネックレス) - カラッツSTORE
Sold out イエローダイヤモンド 0.503ctルース(LIGHT YELLOW, SI1,クッションカット)
Sold out Yellow diamond 0.411ct loose (FANCY LIGHT ORANGY YELLOW, VS1)
Sold out イエローダイヤモンド 0.458ctルース(FANCY ORANGY YELLOW, SI1)
Sold out オレンジダイヤモンド 0.381ctルース(FANCY DEEP BROWNISH ORANGE, SI1) - KARATZ STORE|カラッツSTORE

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.