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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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フォレストグリーンダイヤモンド（トリートメント） 0.326ctルース(FANCY DARK GRAY GREEN, SI-2)

Forest Green Diamond (Treatment) 0.326ct Loose (FANCY DARK GRAY GREEN, SI-2) Sale price¥29,800
Canary Yellow Diamond (Treatment) 0.260ct Loose (FANCY INTENSE GREENISH YELLOW*, SI-2)

Canary Yellow Diamond (Treatment) 0.260ct Loose (FANCY INTENSE GREENISH YELLOW*, SI-2) Sale price¥29,800
カメレオンダイヤモンド 0.057ctルース(FANCY LIGHT GRAY GREEN, SI2)

Chameleon Diamond 0.057ct Loose (FANCY LIGHT GRAY GREEN, SI2) Sale price¥29,800
南アフリカ産グリーンダイヤモンド原石（メイカブル） 0.117ctルース

South African green diamond rough (makeable) 0.117ct loose (VS-SI class equivalent) Sale price¥29,800
Pink diamond 0.030ct loose (FANCY PURPLE PINK, SI2)

Pink diamond 0.030ct loose (FANCY PURPLE PINK, SI2) Sale price¥29,800
"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Tsunemori Akane Model] (Pink Diamond)

"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Tsunemori Akane Model] (Pink Diamond) Sale priceFrom ¥29,800
イエローダイヤモンド（カボションカット） 0.185ctルース

Yellow Diamond (Cabochon Cut) 0.185ct Loose Sale price¥25,800
イエローダイヤモンド 0.071ctルース(FANCY INTENSE ORANGEY YELLOW, SI2)

Fancy intense orangey yellow diamond 0.071ct loose stone (FANCY INTENSE ORANGEY YELLOW, SI2) Sale price¥25,800
ブルーダイヤモンド（トリートメント） 0.139ctルース(Fancy Greenish Blue, SI1)

Ice Blue Diamond (Treatment) 3.2mm/0.139ct Loose (Fancy Greenish Blue, SI1) Sale price¥22,800
ダイヤモンド原石（メイカブル） 0.247ct原石

Yellow diamond rough stone (makeable) 0.247ct rough stone Sale price¥22,800
ブルーダイヤモンド（トリートメント） 0.095ctルース(Fancy Greenish Blue, SI1)

Ice Blue Diamond (Treatment) 2.8mm/0.095ct Loose (Fancy Greenish Blue, SI1) Sale price¥19,800
ピンクダイヤモンド（ラウンドカット） 0.060ctルース(VERY LIGHT BROWN PINK, I-2)

Pink diamond (round cut) 2.5mm/0.060ct loose (VERY LIGHT BROWN PINK, I-2) Sale price¥19,800
South African yellow diamond (makeable) 0.202ct rough stone

South African yellow diamond (makeable) 0.202ct rough stone Sale price¥17,800
South African yellow diamond (makeable) 0.159ct rough stone

South African yellow diamond (makeable) 0.159ct rough stone Sale price¥15,800
South African yellow diamond (makeable) 0.193ct rough stone

South African yellow diamond (makeable) 0.193ct rough stone Sale price¥9,800
Ice blue diamond 1.2mm or 2.0mm 1 stone (VS class equivalent, round cut) {Multiple purchase discount available}

Ice blue diamond 1.2mm or 2.0mm 1 stone (VS class equivalent, round cut) {Multiple purchase discount available} Sale priceFrom ¥4,980
グリーンダイヤモンド（トリートメント）1石（約1.3mm)

Green Diamond (Treatment) 1 stone (approx. 1.3mm)《Multiple purchase discount available》 Sale price¥3,580
Limited to 9 sets Diamond Gacha 💎 Yellow Diamond Rough Stone and Loose Stone Set of 2 《Multiple Purchase Discounts Available》

Limited to 9 sets Diamond Gacha 💎 Yellow Diamond Rough Stone and Loose Stone Set of 2 《Multiple Purchase Discounts Available》 Sale price¥2,980
Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available}

Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available} Sale price¥1,580
Sold out 【31500770掲載】ピンクダイヤモンド 0.100ctルース(FANCY INTENSE PURPLE PINK, SI2)

Pink diamond 0.100ct loose (FANCY INTENSE PURPLE PINK, SI2)

Sold out 【31500769掲載】ピンクダイヤモンド 0.109ctルース(FANCY INTENSE PURPLE PINK, SI2)

Pink diamond 0.109ct loose (FANCY INTENSE PURPLE PINK, SI2)

Sold out ピンクダイヤモンド 0.121ctルース(FANCY PURPLE PINK, VS2) - KARATZ STORE｜カラッツSTORE

Pink diamond 0.121ct loose (FANCY PURPLE PINK, VS2)

Sold out ブルーダイヤモンド (スターカット) 0.094ctルース(Treted FANCY INTENSE GREEN BLUE, VS1) - KARATZ STORE｜カラッツSTORE

Blue Diamond (Star Cut) 0.094ct Loose (Treted FANCY INTENSE GREEN BLUE, VS1)

Sold out イエローダイヤモンド 0.092ctルース(FANCY DEEP ORANGY YELLOW, I1) - KARATZ STORE｜カラッツSTORE

Yellow diamond 0.092ct loose (FANCY DEEP ORANGY YELLOW, I1)

Sold out イエローダイヤモンド 0.249ctルース(VERY LIGHT YELLOW, SI1) - KARATZ STORE｜カラッツSTORE

Yellow diamond 0.249ct loose (VERY LIGHT YELLOW, SI1)

Sold out ピンクダイヤモンド 3.0mm/0.110ctルース(FANCY INTENSE PINK, SI2)

[Available at 10 PM on August 12th] Pink Diamond 3.0mm/0.110ct Loose (FANCY INTENSE PINK, SI2)

Sold out 【31500772掲載】ピンクダイヤモンド 0.114ctルース(FANCY VIVID PURPLE PINK, I1)

Vivid pink diamond 0.114ct loose (FANCY VIVID PURPLE PINK, I1)

Sold out Fancy Deep Yellowish Green Diamond (Treatment) 1.570ct Loose (FANCY DEEP YELLOWISH GREEN, VS2) GIA

Fancy Deep Yellowish Green Diamond (Treatment) 1.570ct Loose (FANCY DEEP YELLOWISH GREEN, VS2) GIA
Sold out グリーンダイヤモンド原石（ソーヤブル） 0.666ctルース

Green diamond rough stone (sawable) 0.666ct rough stone

Sold out アイスブルーダイヤモンド 1.021ctルース(FANCY INTENSE BLUE GREEN, I1) - KARATZ STORE｜カラッツSTORE

Ice blue diamond 1.021ct loose (FANCY INTENSE BLUE GREEN, I1, radiant cut)

Sold out アイスブルーダイヤモンド 1.008ctルース(FANCY INTENSE GREENISH BLUE, I1)

Ice blue diamond 1.008ct loose (FANCY INTENSE GREENISH BLUE, I1, heart shape)

Sold out パープルダイヤモンド 0.170ctルース(FANCY PINK PURPLE, SI2) GIA付 - KARATZ STORE｜カラッツSTORE

Purple diamond 0.170ct loose (FANCY PINK PURPLE, SI2) with GIA

Sold out K18 Orange Sapphire 1.980ct Pink Diamond Ring DGL Appraisal

K18 Orange Sapphire 1.980ct Pink Diamond Ring DGL Appraisal

Sold out 【カラフリ】K18WGグリーンダイヤモンド0.23ct リング 日独鑑 - カラッツSTORE

[Colorful] K18WG Green Diamond 0.23ct Ring Japanese-German Edition

coming soon 【12552511掲載】ピンクダイヤモンド 0.296ctルース

[12552511] Pink diamond 0.296ct loose stone Sale price¥188,000
Sold out 【12554800掲載】アンゴラ産グリーンダイヤモンド原石（ソーヤブル） 0.524ct原石

Angola Green Diamond Rough (Sawable) 0.524ct Rough (Trigon)

Sold out アンゴラ産グリーンダイヤモンド原石（ソーヤブル） 0.525ct原石

Angola Green Diamond Rough (Sawable) 0.525ct Rough
Sold out アンゴラ産グリーンダイヤモンド原石（ソーヤブル） 0.491ct原石（トライゴン）

Angola Green Diamond Rough (Sawable) 0.491ct Rough (Trigon)
Sold out 【31500771掲載】ピンクダイヤモンド 0.137ctルース(FANCY DEEP PURPLISH PINK, SI1)

Pink diamond 0.137ct loose (FANCY DEEP PURPLISH PINK, SI1)

Sold out ブラジル産パライバトルマリン・サンタマリアアクアマリン・アイスブルーダイヤモンド・タンザナイト１３石ハーフエタニティリングセット（2.0mm)

Brazilian Paraiba tourmaline, Santa Maria aquamarine, ice blue diamond, and 13-stone tanzanite half eternity ring set (2.0mm)

Sold out ブルーダイヤモンド 0.070ctルース(LIGHT BLUE, SI1)

Blue diamond 0.070ct loose (LIGHT BLUE, SI1)

Sold out 南アフリカ産グリーンダイヤモンド原石（メイカブル） 0.311ctルース

South African green diamond rough (makeable) 0.311ct loose

Sold out 【32501006掲載】ブルーダイヤモンド 0.051ctルース(LIGHT GRAYISH BLUE, SI1)

Blue diamond 0.051ct loose (LIGHT GRAYISH BLUE, SI1)

Sold out 【31500767掲載】ピンクダイヤモンド 0.088ctルース(FANCY PURPLE PINK , VS2)

FANCY PURPLE PINK 0.088ct loose (FANCY PURPLE PINK, VS2)

Sold out Pt950イエローダイヤモンド0.312ct・ダイヤモンド0.51ct ペンダント（VS-2） - カラッツSTORE

Pt950 Yellow Diamond 0.312ct/Diamond 0.51ct Pendant (VS-2)

Sold out K18YG カメレオンダイヤモンド 0.142ct リング

18K Yellow Gold Chameleon Diamond 3.2mm/0.142ct Ring (SI-2, Fancy Brownish Greenish Yellow)

Sold out K18YGブラジル産パライバトルマリン0.203 リング

K18YG Brazilian Paraiba Tourmaline 0.203ct Pink Diamond Ring
Sold out 【31500773掲載】ピンクダイヤモンド 0.104ctルース(FANCY LIGHT PURPLISH PINK, I1)

Pink diamond 0.104ct loose (FANCY LIGHT PURPLISH PINK, I1)

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's Initiatives and Social Contributions

We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.

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.