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colorless diamond

Colorless diamonds are a classic engagement ring.
It shines strongly in the light and has an exceptional beauty.
Diamonds are usually said to have a pale yellow or brown tinge, but the closer they are to colorless, the more valuable they are.
Evaluations are mainly based on global value standards called the 4Cs.
Diamond is the birthstone for April.

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Sold out ダイヤモンド 0.126ctルース(F, VS-1)

Diamond 3mm/0.126ct loose (F, VS-1, octagonal cut)

Sold out マクルダイヤモンド（トライゴン有） 0.149ctルース

Muckle Diamond (with Trigon) 0.149ct loose

Sold out マクルダイヤモンド（トライゴン有） 0.126ctルース

Muckle Diamond (with Trigon) 0.126ct loose

Sold out ホワイトダイヤモンド 0.479ctルース(FANCY WHITE, I-1)

White diamond 0.479ct loose (FANCY WHITE, I-1)

Sold out ダイヤモンド 0.492ctルース(E, SI2)

Diamond 0.492ct loose (E, SI2)

Sold out バイカラーダイヤモンド 0.020ctルース 日独鑑

Bicolor diamond 0.020ct loose Japanese-German book

Sold out ダイヤモンド 0.411ctルース(F, SI2)

Diamond 0.411ct loose (F, SI2)

Sold out ダイヤモンド 0.610ctルース(F, SI1, ホースヘッドカット)

Diamond 0.610ct loose (F, SI1, horsehead 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 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)

[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"

[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available" Sale price¥7,980
coming soon [Lottery Sale 0530_06] Internally Flawless Diamond (H&C) 0.527ct Loose Stone (E, IF, 3Excellent H&C)

[Lottery Sale 0530_06] Internally Flawless Diamond (H&C) 0.527ct Loose Stone (E, IF, 3Excellent H&C) Sale price¥228,000
coming soon [Lottery Sale 0530_03] Internally Flawless Diamond 4.2mm/0.272ct Loose (D, IF, 3Excellent H&C) GIA

[Lottery Sale 0530_03] Internally Flawless Diamond 4.2mm/0.272ct Loose (D, IF, 3Excellent H&C) GIA Sale price¥148,000
coming soon [Lottery Sale 0530_02] Internally Flawless Diamond 3.8mm/0.217ct Loose Stone (D, IF, 3Excellent H&C) GIA

[Lottery Sale 0530_02] Internally Flawless Diamond 3.8mm/0.217ct Loose Stone (D, IF, 3Excellent H&C) GIA Sale price¥98,000
coming soon 【Lottery Sale 0530_04】Flawless Diamond (H&C) 4.2mm/0.280ct Loose (D, FL, 3Excellent H&C) GIA&CGL

【Lottery Sale 0530_04】Flawless Diamond (H&C) 4.2mm/0.280ct Loose (D, FL, 3Excellent H&C) GIA&CGL Sale price¥210,000
coming soon 【Lottery Sale 0530_05】Flawless Diamond (H&C) 4.3mm/0.290ct Loose Stone (D, FL, 3Excellent H&C) GIA & Central Gem Lab

【Lottery Sale 0530_05】Flawless Diamond (H&C) 4.3mm/0.290ct Loose Stone (D, FL, 3Excellent H&C) GIA & Central Gem Lab Sale price¥218,000
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 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 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 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
Sold out Diamond 3.2mm/0.129ct loose (F, SI-1, EXCELLENT)

Diamond 3.2mm/0.129ct loose (F, SI-1, EXCELLENT)
Sold out ダイヤモンド 0.215ctルース（ローズカット）

Diamond 0.215ct loose (rose cut)
Sold out ダイヤモンド 2.5mm/0.057ctルース（VSクラス相当,ハートシェイプ）

Diamond 2.5mm/0.057ct loose stone (VS class equivalent, heart shape)
Sold out インターナリーフローレスダイヤモンド 4mm/0.240ctルース(E, IF) GIA

Internally Flawless Diamond 4mm/0.240ct Loose (E, IF) GIA

Sold out ダイヤモンド 0.200ctルース(E, IF)

Internally Flawless Diamond 3.8mm/0.200ct Loose (E, IF) GIA

Sold out ダイヤモンド 0.206ctルース(H, VVS1, 3Excellent H&C ハート＆キューピッド)

Diamond 3.8mm/0.206ct Loose (H, VVS1, 3Excellent H&C Heart & Cupid)

Sold out 【カラフリ】K18ダイヤモンド1.0ctピアス

[Colorful] K18 diamond 1.0ct earrings

Sold out 【32500872掲載】ダイヤモンド 0.330ctルース(J, IF, Excellent)

Internally Flawless Diamond 0.330ct Loose (J, IF, Excellent) with GIA

Sold out Pt950ダイヤモンド 1.00ct フープピアス - カラッツSTORE

Pt950 diamond 1.00ct hoop earrings

Sold out ダイヤモンド 1.261ctルース(D, SI1) - KARATZ STORE｜カラッツSTORE

Diamond 1.261ct loose (D, SI1)

Sold out K18レモンクォーツ9.791ct ・ダイヤモンドペンダント（甲州貴石切子） - KARATZ STORE｜カラッツSTORE

[Koshu Precious Stone Kiriko] K18 Lemon Quartz 9.791ct ・Diamond Pendant Top

Sold out K18ダイヤモンド0.30ct ピアス - カラッツSTORE

K18 diamond 0.30ct earrings

Sold out ダイヤモンド 0.025ctルース（カイトカット） - KARATZ STORE｜カラッツSTORE

Diamond 0.025ct loose (kite cut)

Sold out ダイヤモンド 0.115ctルース（トリリアントカット） - KARATZ STORE｜カラッツSTORE

Diamond 0.115ct loose (trilliant cut)

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.