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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 ダイヤモンド原石（メイカブル） 0.727ct原石

Rough diamond (makeable) 0.727ct rough stone

Sold out ダイヤモンド原石（ソーヤブル） 0.259ct原石

Rough diamond (sawable) 0.259ct rough diamond with trigon

Sold out ダイヤモンド原石（ソーヤブル） 0.251ct原石・トライゴン有

Rough diamond (sawable) 0.251ct rough stone, with trigon

Sold out Pt900一粒ダイヤモンド1.08ct ペンダントトップ（ネックレストップ） - カラッツSTORE

[Colorful] Pt900 single diamond 1.08ct pendant top (necklace top)

Sold out Pt900ブルーダイヤモンド0.20ct ペンダントトップ - カラッツSTORE

[Colorful] Pt900 blue diamond 0.20ct pendant top

Sold out ダイヤモンド 3.35ct原石 中宝付

Diamond 3.35ct rough stone with medium treasure

Sold out ダイヤモンド 5.003ct原石

Diamond 5.003ct rough stone

Sold out K18ダイヤモンド0.18ct リング（ローズカット） - カラッツSTORE

K18 diamond 0.18ct ring (rose cut)

Sold out 【12523514掲載】ダイヤモンド 0.190ctルース

Sliced ​​diamond 0.190ct loose (Trapiche diamond)

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)

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 Pt900ローズカットダイヤモンド0.30ct ハーフエタニティリング - KARATZ STORE｜カラッツSTORE

Pt900 rose cut diamond 0.30ct half eternity ring

Sold out K18PGモルガナイト1.54ct リング - KARATZ STORE｜カラッツSTORE

K18PG morganite 1.54ct diamond ring

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 イエローダイヤモンド 0.206ctルース(FANCY DEEP ORANGY YELLOW, SI2) - KARATZ STORE｜カラッツSTORE

Yellow diamond 0.206ct loose (FANCY DEEP ORANGY YELLOW, SI2)

Sold out ダイヤモンド 0.082ctルース（トリリアントカット） - KARATZ STORE｜カラッツSTORE

Diamond 0.082ct loose (trilliant cut)

Sold out イエローダイヤモンド 0.201ctルース（ローズカット） - KARATZ STORE｜カラッツSTORE

Yellow diamond 0.201ct loose (rose cut)

Sold out イエローダイヤモンド 0.055ctルース(FANCY DEEP ORANGY YELLOW, I1) - KARATZ STORE｜カラッツSTORE

Yellow diamond 0.055ct loose (FANCY DEEP ORANGY YELLOW, I1)

Sold out Pt900/K18PGピンクダイヤモンド0.048ct リング - KARATZ STORE｜カラッツSTORE

Pt900/K18PG pink diamond 0.048ct ring

coming soon Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》

Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》 Sale price¥22,000
coming soon Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》

Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》 Sale price¥11,000
coming soon 【32501960掲載】イエローダイヤモンド 0.285ctルース(UNDER N(VERY LIGHT YELLOW), VS-1)

【9/12 22時販売】イエローダイヤモンド 0.285ctルース(VERY LIGHT YELLOW, VS-1)　 Sale price¥55,800
coming soon 【9/12 22時販売】イエローダイヤモンド 0.212ctルース(FANCY DEEP ORANGY YELLOW, VS1)

【9/12 22時販売】イエローダイヤモンド 0.212ctルース(FANCY DEEP ORANGY YELLOW, VS1) Sale price¥45,800
coming soon [Lottery Sale 0829] Blue Diamond 0.064ct Loose Stone (FANCY LIGHT GREEN BLUE, VS-1)

[Lottery Sale 0829] Blue Diamond 0.064ct Loose Stone (FANCY LIGHT GREEN BLUE, VS-1) Sale price¥298,000
Sold out イエローダイヤモンド 0.262ctルース(UNDER S(LIGHT YELLOW), VS1)

Loose Yellow Diamond, 0.262ct (LIGHT YELLOW, VS1, Princess Cut)
Sold out イエローダイヤモンド（トリートメント） 0.190ctルース(FANCY INTENSE YELLOW*, SI-2)

Loose Yellow Diamond (Treated) 0.190ct (FANCY INTENSE YELLOW, SI-2)
Sold out Pt950 アイスブルーダイヤモンド リング

Pt950 Ice Blue Diamond Ring
Sold out 【32501858掲載】グレーダイヤモンド 0.141ctルース(FANCY GRAY, I-1)

Loose Gray Diamond 0.141ct (FANCY GRAY, I-1)
Sold out Gray Diamond 0.200ct Loose (FANCY DARK GRAY, SI-2)

Gray Diamond 0.200ct Loose (FANCY DARK GRAY, SI-2)
Sold out Pink diamond 2.2mm/0.043ct loose (FANCY LIGHT PURPLISH PINK, SI2)

Pink diamond 2.2mm/0.043ct loose (FANCY LIGHT PURPLISH PINK, SI2)
Sold out Diamond 0.777ct loose (butterfly cut)

Diamond 0.777ct loose (butterfly cut)
Sold out Gray Diamond 0.079ct Loose (FANCY DARK GRAY, I-1)

Gray Diamond 0.079ct Loose (FANCY DARK GRAY, I-1)

Sold out Diamond 0.120ct loose (G, VS2, Excellent H&C)

Diamond 0.120ct loose (G, VS2, Excellent H&C)
Sold out White Diamond 6.2mm/0.988ct Loose (FANCY WHITE, I2)

White Diamond 6.2mm/0.988ct Loose (FANCY WHITE, I2)

Sold out Internally Flawless Diamond (H&C) 3.8mm/0.210ct Loose (F, IF, 3 Excellent H&C) GIA & Chuho

Internally Flawless Diamond (H&C) 3.8mm/0.210ct Loose (F, IF, 3 Excellent H&C) GIA & Chuho
Sold out ダイヤモンド 0.131ctルース(F, VS-1)

Diamond 0.131ct loose (F, VS-1, octagonal cut)

Sold out 【32501456掲載】ピンクダイヤモンド（プリンセスカット） 0.089ctルース(FANCY LIGHT PURPLISH PINK, I-1)

[Posted in 32501456] Pink Diamond (Princess Cut) 0.089ct Loose (FANCY LIGHT PURPLISH PINK, I-1)

Sold out イエローダイヤモンド 0.121ctルース(FANCY INTENSE YELLOW, VS-1)

[Posted in 32501431] Yellow Diamond 0.121ct Loose (FANCY INTENSE YELLOW, VS-1)

Sold out イエローダイヤモンド 0.706ctルース(FANCY DEEP ORANGY YELLOW, I-1)

[Posted in 32501430] Yellow Diamond 0.706ct Loose (FANCY DEEP ORANGY YELLOW, I-1)

Sold out 【32501256掲載】イエローダイヤモンド 0.167ctルース(FANCY VIVID ORANGY YELLOW, VS-2)

[Posted in 32501256] Yellow Diamond 0.167ct Loose (FANCY VIVID ORANGY YELLOW, VS-2)

Sold out グリーンイエローダイヤモンド 0.502ctルース(VERY LIGHT GREEN YELLOW, I1)

Green yellow diamond 5mm/0.502ct loose (VERY LIGHT GREEN YELLOW, I1)

Sold out ダイヤモンド 0.210ct原石

South African diamond 0.240ct rough stone
Sold out イエローダイヤモンド（カボションカット） 0.324ctルース

Yellow Diamond (Cabochon Cut) 0.324ct Loose
Sold out フローレスダイヤモンド（H&C） 4.2mm/0.276ctルース(D, FL, 3Excellent H&C)

Flawless Diamond (H&C) 4.2mm/0.276ct Loose (D, FL, 3Excellent H&C)

Sold out 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)
Sold out インターナリーフローレスダイヤモンド（H&C） 0.204ctルース(F, IF, 3Excellent H&C)

Internally Flawless Diamond (H&C) 0.204ct Loose (F, IF, 3Excellent H&C)
Sold out ダイヤモンド原石（ソーヤブル） 0.103ct原石

South African diamond rough (sawable) 0.103ct rough (with trigon)
Sold out フローレスダイヤモンド（H&C） 4.0mm/0.224ctルース(D, FL, 3Excellent H&C) GIA&中宝

[On sale from 10pm on 5/6] Flawless Diamond (H&C) 4.0mm/0.224ct Loose (D, FL, 3Excellent H&C) GIA & Chuho

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.