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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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【32501847掲載】ダイヤモンド 0.244ctルース(F, VS2)

Diamond 0.244ct Loose Stone (F, VS2, Flanders Cut) Sale price¥39,800
0.209ct Yellow Diamond Loose (Fancy Deep Brownish Yellow, VVS-2)

0.209ct Yellow Diamond Loose (Fancy Deep Brownish Yellow, VVS-2) Sale price¥49,800
0.174ct Brown Diamond Loose (FANCY DARK BROWN, SI-2)

0.174ct Brown Diamond Loose (FANCY DARK BROWN, SI-2) Sale price¥25,800
Diamond rough (makeable) 0.284ct rough

Diamond rough (makeable) 0.284ct rough Sale price¥12,800
0.338ct Canadian Green Diamond Rough (Sawable) - With Trigons

0.338ct Canadian Green Diamond Rough (Sawable) - With Trigons Sale price¥128,000
Angola Green Diamond Rough (Sawable) 0.528ct Rough (with Trigon)

Angola Green Diamond Rough (Sawable) 0.528ct Rough (with Trigon) Sale price¥198,000
Brown Diamond 5.2mm/0.561ct Loose (FANCY DARK BROWN, SI2)

Brown Diamond 5.2mm/0.561ct Loose (FANCY DARK BROWN, SI2) Sale price¥29,800
Loose Pink Diamond, 2.5mm/0.097ct (FANCY PINK, SI2, Princess Cut)

Loose Pink Diamond, 2.5mm/0.097ct (FANCY PINK, SI2, Princess Cut) Sale price¥148,000
南アフリカ産ダイヤモンド（メイカブル） 0.159ct原石

South African yellow diamond (makeable) 0.159ct rough stone Sale price¥12,800
Canadian rough diamond (sawable) 0.096ct rough with trigon

Canadian rough diamond (sawable) 0.096ct rough with trigon Sale price¥29,800
シルキーダイヤモンド 0.086ctルース

Silky diamond 2.7mm/0.086ct loose Sale price¥9,800
シルキーダイヤモンド 0.097ctルース

Silky diamond 2.8mm/0.097ct loose Sale price¥9,800
Uncut Canadian diamond (sawable) 0.103ct

Uncut Canadian diamond (sawable) 0.103ct Sale price¥29,800
南アフリカ産ダイヤモンド（メイカブル） 0.202ct原石

South African yellow diamond (makeable) 0.202ct rough stone Sale price¥15,800
南アフリカ産ダイヤモンド（メイカブル） 0.169ct原石

South African gray diamond (makeable) 0.169ct rough stone Sale price¥14,800
Rough diamond (sawable) 0.466ct rough diamond (with trigon)

Rough diamond (sawable) 0.466ct rough diamond (with trigon) Sale price¥98,000
Diamond rough (makeable) 0.204ct rough

Diamond rough (makeable) 0.204ct rough Sale price¥39,800
0.604ct rough diamond

0.604ct rough diamond Sale price¥12,800
【32501524掲載】ピンクダイヤモンド 0.070ctルース(FANCY VIVID PINK PURPLE, I-1)

Purple Diamond 0.070ct Loose (FANCY VIVID PINK PURPLE, I-1) Sale price¥188,000
ダイヤモンド 0.052ctルース（トラペーズカット,VSクラス相当）

Diamond 0.052ct loose (trapeze cut, VS class equivalent) Sale price¥6,980
ダイヤモンド 0.061ctルース（トラペーズカット,VSクラス相当）

Diamond 0.061ct loose (trapeze cut, VS class equivalent) Sale price¥7,980
ダイヤモンド 0.042ctルース（トラペーズカット,VSクラス相当）

Diamond 0.042ct loose (trapeze cut, VS class equivalent) Sale price¥6,980
ダイヤモンド 0.039ctルース（トラペーズカット,VSクラス相当）

Diamond 0.039ct loose (trapeze cut, equivalent to VS class) Sale price¥5,980
ダイヤモンド 0.200ctルース(G, VVS2,ラディアントカット)

0.200ct loose diamond (G, VVS2, radiant cut) Sale price¥29,800
ダイヤモンド 3.2mm/0.132ctルース(G, VS-2, EXCELLENT)

3.2mm/0.132ct loose diamond (G, VS-2, Excellent) Sale price¥29,800
ダイヤモンド原石（メイカブル） 0.185ctルース（VS-SI）

Rough diamond (makeable) 0.185ct loose (VS-SI) Sale price¥19,800
ダイヤモンド原石（メイカブル） 0.345ctルース（VS-SI相当）

Rough diamond (makeable) 0.345ct loose (VS-SI equivalent) Sale price¥29,800
K18YG アメリカ産オレゴンサンストーン 0.44ct・ピンクダイヤモンド・オレンジスピネル リング

18K Yellow Gold American Oregon Sunstone 0.44ct, Pink Diamond, Orange Spinel Ring Sale price¥158,000
Fancy Intense Purple Pink Diamond 0.021ct Loose (FANCY INTENSE PURPLE PINK, SI2)

Fancy Intense Purple Pink Diamond 0.021ct Loose (FANCY INTENSE PURPLE PINK, SI2) Sale price¥39,800
ピンクダイヤモンド 0.051ctルース(FANCY LIGHT PINK, SI-2)

[Posted 32501454] Pink Diamond 0.051ct Loose (FANCY LIGHT PINK, SI-2) Sale price¥39,800
【32501451掲載】ピンクダイヤモンド 0.046ctルース(FANCY LIGHT PURPLISH PINK, SI-2)

[32501451 published] Pink diamond 0.046ct loose (FANCY LIGHT PURPLISH PINK, SI-2) Sale price¥39,800
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) Sale price¥18,800
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) Sale price¥49,800
南アフリカ産ダイヤモンド原石（ソーヤブル） 0.105ct原石

South African rough diamond (sawable) 0.105ct rough (with trigon) Sale price¥39,800
Pt950 Myanmar gray spinel (platinum spinel) 5.5mm/0.685ct black diamond ring

Pt950 Myanmar gray spinel (platinum spinel) 5.5mm/0.685ct black diamond ring Sale price¥128,000
ダイヤモンド 0.618ctルース(I, I1,ツリーカット)

Diamond 0.618ct loose (I, I1, tree cut) Sale price¥128,000
ダイヤモンド 2.810ct原石

Diamond 2.810ct rough stone Sale price¥9,800
スライストラピッチェダイヤモンド 0.228ctルース

[On sale at 10pm on August 19th] Sliced ​​Trapiche Diamond 0.228ct Loose Sale price¥18,800
ソルトアンドペッパーダイヤモンド 5.2mm/0.863ctルース（カボションカット）

Salt and Pepper Diamond 5.2mm/0.863ct Loose (Cabochon Cut) Sale price¥98,000
南アフリカ産グリーンダイヤモンド原石（メイカブル） 0.298ctルース

South African green diamond rough (makeable) 0.298ct loose Sale price¥69,800
ダイヤモンド（カボションカット） 0.196ctルース

Diamond (cabochon cut) 0.196ct loose Sale price¥29,800
ダイヤモンド 0.430ct原石

South African diamond rough stone 0.430ct Sale price¥9,800
イエローダイヤモンド（カボションカット） 0.176ctルース

Yellow Diamond (Cabochon Cut) 0.176ct Loose Sale price¥29,800
ダイヤモンド 0.245ctルース(E, VS-1)

Diamond 0.245ct loose stone (E, VS-1, octagon brilliant cut) Sale price¥39,800
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
フォレストグリーンダイヤモンド（トリートメント） 0.431ctルース(FANCY DARK GRAY GREEN, SI-2)

Forest Green Diamond (Treatment) 0.431ct Loose (FANCY DARK GRAY GREEN, SI-2) Sale price¥35,800
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
ダイヤモンド 0.330ct原石

South African diamond rough stone 0.330ct Sale price¥5,980

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.