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raw stone

This is a list of products that contain rough stones and gemstones.

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Limited to 5 sets! Fluorescent Diamond Gacha! 💎 Set of 2 loose diamonds (2.4-3.4mm) [Multiple purchase discounts available]

Limited to 5 sets! Fluorescent Diamond Gacha! 💎 Set of 2 loose diamonds (2.4-3.4mm) [Multiple purchase discounts available] Sale price¥2,980
ダイヤモンド 2.810ct原石

Diamond 2.810ct rough stone Sale price¥9,800
コロンビア産エメラルド 17.581ct原石　日独鑑

[8/11 22:00 Sale] Colombian Emerald 17.581ct Rough Stone, Japan-Germany Qualification Sale price¥45,800
ジンバブエ産ユークレース 0.545ct原石

[On sale at 10pm on August 8th] Zimbabwean Euclase 0.545ct Rough Stone Sale price¥29,800
コロンビア産エメラルド 6.590ct原石

[On Sale at 10 PM on August 7th] Colombian Emerald Rough Stone 6.590ct Sale price¥15,800
コロンビア産ユークレース 1.365ct原石

Colombian Euclase 1.365ct rough stone Sale price¥29,800
エメラルド 9.380ct原石

[12541081 published] Emerald 9.380ct rough stone Sale price¥4,980
エメラルド 77.265ct原石

[Posted 12541074] Emerald 77.265ct rough stone Sale price¥6,980
エメラルド 162.375ct原石

[Posted 12541071] Emerald 162.375ct rough stone Sale price¥9,800
ブラジル産ベリル 105.928ct原石

Brazilian beryl 105.928ct raw stone Sale price¥18,800
ブラジル産パライバトルマリン 96.184ct原石

Brazilian Paraiba tourmaline 96.184ct raw stone Sale price¥8,800
エチオピア産オパール 136.601ct原石

[Posted 12540116] Ethiopian opal 136.601ct rough stone Sale price¥29,800
コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.107ct原石

Colombian trapiche emerald (reverse trapiche) 0.107ct rough stone Sale price¥9,800
オパール 426.985ct原石

Opal 426.985ct rough stone Sale price¥29,800
ジンバブエ産ユークレース 0.580ct原石

Zimbabwean Euclase 0.580ct Rough Stone Sale price¥34,800
ブラジル産パライバトルマリン 181.342ct原石

Brazilian Paraiba tourmaline 181.342ct raw stone Sale price¥9,800
ブラジル産パライバトルマリン 233.409ct原石

Paraiba tourmaline 233.409ct raw stone from Brazil Sale price¥12,800
コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.101ct原石

Colombian trapiche emerald (reverse trapiche) 0.101ct rough stone Sale price¥12,800
[Resale] [Jeweler's Tools] Black Light, 3 Loose Stones (Ruby, Red Spinel, Oil in Quartz) with Rechargeable Battery

[Resale] [Jeweler's Tools] Black Light, 3 Loose Stones (Ruby, Red Spinel, Oil in Quartz) with Rechargeable Battery Sale price¥6,980
【宝石商の道具】ペンライト（原石向け）・原石2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] Penlight (for rough stones), 2-piece set of rough stones Sale price¥4,980
1 Russian Demantoid Garnet Rough Stone {Multiple Purchase Discounts Available}

1 Russian Demantoid Garnet Rough Stone {Multiple Purchase Discounts Available} Sale price¥3,980
コロンビア産エメラルド ルース・原石2石セット（ラウンドカット3mm）

Colombian emerald loose rough stone set of 2 stones (round cut 3mm)《Multiple purchase discount available》 Sale price¥6,980
カイヤナイト 原石・ルース2石セット

Kyanite raw stone/loose 2 stone set《Multiple purchase discount available》 Sale price¥2,980
March birthstone, aquamarine rough stone and loose stone set of 2 (from Nigeria) {Multiple purchase discounts available} {For beginners}

March birthstone, aquamarine rough stone and loose stone set of 2 (from Nigeria) {Multiple purchase discounts available} {For beginners} Sale price¥3,980
タンザナイト原石・ルース2石セット（シュガーローフカット）

Tanzanite raw stone/loose 2 stone set (sugar loaf cut)《Multiple purchase discount available》 Sale price¥6,980
January birthstone rhodolite garnet rough stone and loose stone set of 2 (from Zambia) {Multiple purchase discounts available} {For beginners}

January birthstone rhodolite garnet rough stone and loose stone set of 2 (from Zambia) {Multiple purchase discounts available} {For beginners} Sale price¥2,980
April birthstone Morganite rough stone and loose stone set of 2 (from Nigeria) {Multiple purchase discounts available} {For beginners}

April birthstone Morganite rough stone and loose stone set of 2 (from Nigeria) {Multiple purchase discounts available} {For beginners} Sale price¥3,980
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
タンザニア・マヘンゲ産ピンクスピネル原石・ルース2石セット（プリンセスカット）《複数購入割引有》

《Limited to 20 stones》 Pink spinel raw stone from Mahenge, Tanzania, loose 2 stone set (princess cut)《Multiple purchase discount available》 Sale price¥3,980
1 green spodumene rough stone (average 15ct)《Multiple purchase discount available》

1 green spodumene rough stone (average 15ct)《Multiple purchase discount available》 Sale price¥3,980
November birthstone citrine rough and loose stone set of 2 (Madeira citrine, from Brazil) {Multiple purchase discounts available} {For beginners}

November birthstone citrine rough and loose stone set of 2 (Madeira citrine, from Brazil) {Multiple purchase discounts available} {For beginners} Sale price¥3,980
Limited to 6 stones: 1 topaz rough stone (November birthstone) Multiple purchase discounts available

Limited to 6 stones: 1 topaz rough stone (November birthstone) Multiple purchase discounts available Sale price¥3,980
コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.329ct原石

Colombian Trapiche Emerald (Reverse Trapiche) 4.3mm/0.329ct Rough Stone Sale price¥29,800
ブラジル産パライバトルマリン（パーティカラー） 0.268ct原石（CuO:1.8%、MnO:0.7%）

Brazilian Paraiba tourmaline (parti color) 0.268ct rough stone (CuO: 1.8%, MnO: 0.7%) Sale price¥18,800
コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.134ct原石

Colombian trapiche emerald (reverse trapiche) 0.134ct rough stone Sale price¥12,800
ダイヤモンド 0.430ct原石

South African diamond rough stone 0.430ct Sale price¥9,800
Limited to 6 gems! "Gemstone Encyclopedia" Gacha! 💎 1 gemstone (rough stone) from the gemstone encyclopedia + 1 rough emerald, for a total of 2 gems

Limited to 6 gems! "Gemstone Encyclopedia" Gacha! 💎 1 gemstone (rough stone) from the gemstone encyclopedia + 1 rough emerald, for a total of 2 gems Sale price¥8,800
コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.178ct原石

Colombian trapiche emerald (reverse trapiche) 0.178ct rough stone Sale price¥15,800
コロンビア産パイライト付ユークレース 23.430ct原石

Colombian pyrite-bearing euclase 23.430ct rough stone by Takakikyo Sale price¥19,800
コロンビア産パイライト付ユークレース 37.340ct原石

Colombian pyrite-bearing euclase 37.340ct rough stone by Takakikyo Sale price¥12,800
ジンバブエ産ユークレース 0.960ct原石

Zimbabwe bicolor euclase rough stone 0.960ct Sale price¥39,800
コロンビア産エメラルド3.2mm/0.102ctルース

Colombian emerald 10.940ct rough stone Sale price¥69,800
ダイヤモンド 0.330ct原石

South African diamond rough stone 0.330ct Sale price¥5,980
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) Sale price¥24,800
ジンバブエ産ユークレース 2.976ct原石

Zimbabwean Euclase 2.976ct rough stone Sale price¥98,000
ブラジル産パライバトルマリン 0.225ct原石（ CuO:2.1%、MnO:0.9%）

Brazilian Paraiba tourmaline 0.225ct raw stone (CuO:2.1%, MnO:0.9%) Sale price¥8,800
ダイヤモンド 0.210ct原石

South African diamond rough stone 0.210ct Sale price¥8,800
コロンビア産パイライト付きエメラルド 2.380ct原石

Colombian pyrite emerald 2.380ct rough stone Sale price¥29,800

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の取り組みと社会貢献

業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。

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.