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Sold out Lavender Quartz 1 stone (Scorollite) 3ct 1 stone《Multiple purchase discount available》

Lavender Quartz 1 stone (Scorollite) 3ct 1 stone《Multiple purchase discount available》

Sold out Cobalt Garnite 1 stone (discount available for multiple purchases)

Cobalt Garnite 1 stone (discount available for multiple purchases)

Sold out 【宝石商の道具】加熱処理のエチオピア産オパール 1石（ブラックオパールとの見分けシート付） - カラッツSTORE

1 heat-treated Ethiopian opal (includes a sheet to distinguish it from black opal)

Sold out トラピッチェルビー 1石 - KARATZ STORE｜カラッツSTORE

Trapichell Bee 1 stone《Multiple purchase discount available》

Sold out 【宝石商の道具】冷却ヒビ入れ染色クォーツ・天然エメラルド見分け2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] Cooling Cracked Dyed Quartz/Natural Emerald Identification 2-piece Set (Discount available for multiple purchases)

Sold out 【再入荷】鉱物標本スタンドとサンストーンorアイオライトの2点セット - KARATZ STORE｜カラッツSTORE

[Restocked] 2-piece set of mineral specimen stand and sunstone or iolite

Sold out 含浸ルビー・天然ルビー見分け2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] 2-piece set for distinguishing impregnated rubies and natural rubies (discount available for multiple purchases)

Sold out 【売り切れ】カラッツオリジナル鑑別書用アルバム・ルース1個[ケン氏カットのレアストーン] - KARATZ STORE｜カラッツSTORE

[Final Sale] [Jeweler's Tools] Karatz Original Album Loose 1 Piece [KEN Cut 1 Stone]

Sold out [Jeweler's Tools] Collection set of 24 loose cases, 3 loose cases [cut by Mr. KEN, worth 8,000 yen]

[Jeweler's Tools] Collection set of 24 loose cases, 3 loose cases [cut by Mr. KEN, worth 8,000 yen]

Sold out マルチカラートルマリン 1石（オクタゴナルカット,八角形,5mm） - KARATZ STORE｜カラッツSTORE

Multi-colored tourmaline 1 stone (octagonal cut, octagonal, 5mm)《Multiple purchase discount available》

Sold out リヒテライト 0.954ctルース - KARATZ STORE｜カラッツSTORE

richterite 0.954ct loose

Sold out スファレライト 1.281ctルース - KARATZ STORE｜カラッツSTORE

Sphalerite 1.281ct loose

Sold out [Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

Sold out アルマンディンガーネット ルース

[Rouge cut] Mozambique almandine garnet 0.904ct loose stone
Sold out チベット産アンデシン 0.843ctルース

Tibetan Andesine 0.843ct loose stone
Sold out ブラジル産グリーントルマリン 0.270ctルース

Brazilian Green Tourmaline 4.1mm/0.270ct Loose Stone
Sold out バイカラーゾイサイト 0.716ctルース

Tanzania Bicolor Zoisite 0.716ct Loose Stone
Sold out バイカラータンザナイト 0.739ctルース

Tanzanian bicolor tanzanite 0.739ct loose stone
Sold out パープルアパタイト 0.993ctルース

Purple Apatite 0.993ct Loose Stone with Certificate of Authenticity
Sold out パープルアパタイト 0.769ctルース

Purple Apatite 0.769ct Loose Stone with Certificate of Authenticity
Sold out ブラジル産ホワイトカルセドニー 2.996ctルース

[Cat Cut] Brazilian White Chalcedony 2.996ct Loose
Sold out ブラジル産非加熱ピンクインペリアルトパーズ（シェリーピンク） 0.168ctルース

Brazilian unheated pink imperial topaz (sherry pink) 0.168ct loose stone
Sold out Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.

Limited to 13 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.
Sold out Limited to 8 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.

Limited to 8 stones: 1 red spinel rough stone from Myanmar. Discounts available for multiple purchases.
Sold out [Jeweler's Tools] Limited Edition Chelsea Color Filter Emerald 2-Piece Set

[Jeweler's Tools] Limited Edition Chelsea Color Filter Emerald 2-Piece Set
Sold out [Jeweler's Tools] 3-piece set: Jewelry Loupe (14x magnification), Blue Diamond, and Pink Tourmaline or Sapphire

[Jeweler's Tools] 3-piece set: Jewelry Loupe (14x magnification), Blue Diamond, and Pink Tourmaline or Sapphire
Sold out ブラジル産シトリン 2.641ctルース

Brazilian citrine 2.641ct loose stone
Sold out Set of 2 Tanzanite stones from Tanzania (2mm, round cut) {Multiple purchase discount available}

Set of 2 Tanzanite stones from Tanzania (2mm, round cut) {Multiple purchase discount available}
Sold out Limited to 10 stones: 1 petzotite loose stone from Madagascar (2mm, round cut) Multiple purchase discounts available

Limited to 10 stones: 1 petzotite loose stone from Madagascar (2mm, round cut) Multiple purchase discounts available
Sold out ブラジル産サンタマリアアクアマリン 0.240ctルース

Brazilian Santa Maria Aquamarine 0.240ct loose stone
Sold out モスアゲート 0.539ctルース

Moss agate 0.539ct loose stone
Sold out タンザニア産サンストーン（イリュージョンサンストーン） 0.381ctルース

Tanzanian Sunstone (Illusion Sunstone) 0.381ct Loose Stone
Sold out ブルーサファイア 3.9mm/0.280ctルース

Blue sapphire 3.9mm/0.280ct loose stone
Sold out メデューサクォーツ（パライバクォーツ） 0.915ctルース

Brazilian Medusa Quartz (Paraiba Quartz) 0.915ct loose stone
Sold out ナイジェリア産グリーンベリル 0.253ctルース

Nigerian Green Beryl 0.253ct Loose Stone
Sold out ベトナム産非加熱シルキーピンクサファイア 0.182ctルース

Vietnam unheated silky pink sapphire 0.182ct loose stone
Sold out ブラウンダイヤモンド 0.169ctルース

Brown Diamond 0.169ct Loose
Sold out デュモルチェライトインクォーツ 0.329ctルース

Brazilian Dumortierite in Quartz 0.329ct loose stone
Sold out デュモルチェライトインクォーツ 0.230ctルース

Brazilian Dumortierite in Quartz 0.230ct Loose Stone
Sold out アイオライトサンストーン 0.450ctルース

Indian Iolite Sunstone 4.8mm/0.450ct Loose Stone
Sold out アパタイト 0.360ctルース

Madagascar Neon Blue Apatite 0.360ct Loose
Sold out スフェーン 0.563ctルース

Madagascar sphene 0.563ct loose stone
Sold out インドネシア産アゲート 9.795ctルース（十字架インクルージョン）

Indonesian Agate 9.795ct Loose Stone (Cross Inclusion) JTL Catalog
Sold out Limited to 10 stones: 1 London blue diamond loose (VS-SI class equivalent, 1.8mm) Multiple purchase discounts available

Limited to 10 stones: 1 London blue diamond loose (VS-SI class equivalent, 1.8mm) Multiple purchase discounts available
Sold out Limited to 9 stones: 1 London Blue Diamond Loose (VS-SI class equivalent, 2.0mm) Multiple purchase discounts available

Limited to 9 stones: 1 London Blue Diamond Loose (VS-SI class equivalent, 2.0mm) Multiple purchase discounts available
Sold out [Limited to 7 stones] Oregon Sunstone from the United States (cabochon cut, average 1.5ct) [Multiple purchase discount available]

[Limited to 7 stones] Oregon Sunstone from the United States (cabochon cut, average 1.5ct) [Multiple purchase discount available]
Sold out Limited to 3 stones: 1 neon blue apatite loose stone from Madagascar (Sangé cut) Multiple purchase discounts available

Limited to 3 stones: 1 neon blue apatite loose stone from Madagascar (Sangé cut) Multiple purchase discounts available
Sold out Limited to 15 stones, 1 loose Australian iron opal stone, multiple purchase discounts available

Limited to 15 stones, 1 loose Australian iron opal stone, multiple purchase discounts available

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.