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ゴーシェナイト 0.846ctルース

Goshenite 0.846ct loose stone Sale price¥7,980
【Sales start: June 15, 10 PM JST】Almandine Garnet from Tanzania 0.938ct Loose Stone

【Sales start: June 15, 10 PM JST】Almandine Garnet from Tanzania 0.938ct Loose Stone Sale price¥12,800
合成アレキサンドライト 1.381ctルース

[On sale June 12th at 10 PM] Synthetic Alexandrite 1.381ct Loose Stone Sale price¥25,800
合成アレキサンドライト 1.076ctルース

[On sale 6/12 10 PM JST] Synthetic Alexandrite 1.076ct Loose Stone Sale price¥25,800
[On sale June 15th at 10 PM] Natural Kyanite from Nepal 2.863ct Loose (Royal Blue Color)

[On sale June 15th at 10 PM] Natural Kyanite from Nepal 2.863ct Loose (Royal Blue Color) Sale price¥15,800
ブラジル産カナリーイエロークリソベリル 0.672ctルース

[On sale June 14, 10 PM JST] Brazilian Canary Yellow Chrysoberyl 0.672 ct Loose Gemstone Sale price¥18,800
雲母インクォーツ 0.758ctルース

Mica in Quartz 0.758ct Loose Stone Sale price¥5,980
マダガスカル産スペサタイトガーネット 1.053ctルース

Spessartite Garnet from Madagascar 1.053ct loose stone Sale price¥29,800
デンドリティッククォーツ 4.587ctルース

Brazilian dendritic quartz 4.587ct loose stone Sale price¥9,800
レピドクロサイトインクォーツ 0.532ctルース

Lepidocrocite in quartz 0.532ct loose Sale price¥6,980
ネパール産カイヤナイト 2.906ctルース

[On sale June 6th, 10 PM] Nepal Kyanite 2.906ct Loose Stone with Certificate Sale price¥19,800
ペルー産ジェムシリカ（クリソコーラ・カルセドニー） 4.098ctルース

[On sale June 6th, 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 4.098ct Loose Stone with Japan-Germany Gemological Report Sale price¥24,800
ペルー産ジェムシリカ（クリソコーラ・カルセドニー） 3.210ctルース

[On sale June 6th at 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 3.210ct Loose Stone, GIA & JGGL Certified Sale price¥19,800
ペルー産ジェムシリカ（クリソコーラ・カルセドニー） 2.556ctルース

[Sale on 6/6 at 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 2.556ct Loose Stone with Japan-Germany Gemstone Report Sale price¥15,800
ロシア産デマントイドガーネット（ホーステール認む） 1.366ctルース

[Sales start June 5th, 10 PM] Russian Demantoid Garnet (horsetail inclusion visible) 6.8mm/1.366ct Loose Stone with Appraisal Report Sale price¥398,000
ロシア産デマントイドガーネット（ホーステール認む） 1.589ctルース

[On sale June 5th at 10 PM] Russian Demantoid Garnet (Horsetail inclusion confirmed) 6.9mm/1.589ct Loose Stone with Appraisal Report Sale price¥458,000
ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 7.682ctルース

[On sale 10 PM, June 6] Brazil Tinkerbell Quartz (Pink Fire Quartz) 7.682ct Loose Stone Sale price¥15,800
ロシア産デマントイドガーネット（ホーステール認む） 0.876ctルース

[On sale 6/5 at 10 PM] Russian Demantoid Garnet (horsetail inclusion visible) 5.8mm/0.876ct Loose Stone with Appraisal Report Sale price¥258,000
ブラジル産マーカサイトインクォーツ 6.670ctルース

[Sales start May 31, 10 PM JST] Brazilian Marcasite in Quartz Loose Stone 6.670ct Sale price¥25,800
K18WG クロムトルマリン 0.70ctct・サファイア0.30ctペンダントトップ（ネックレストップ） 鑑別書

[On sale 10 PM on 6/14] [Colorful] K18WG Chrome Tourmaline 0.70ct / Sapphire 0.30ct Pendant Top (Necklace Top) with appraisal Sale price¥79,800
ブラジル産クォーツインクォーツ 15.373ctルース

Brazilian Quartz in Quartz 15.373ct Loose Stone Sale price¥18,800
タンザニア・マヘンゲ産コーネルピン 0.172ctルース

Tanzanian Kornerupine 0.172ct loose stone Sale price¥12,800
タンザニア産コーネルピン 0.213ctルース

Tanzanian Kornerupine 0.213ct loose stone Sale price¥12,800
Color change sapphire 0.473ct loose stone (purple sapphire)

Color change sapphire 0.473ct loose stone (purple sapphire) Sale price¥25,800
アフガニスタン産クンツァイト 8.834ctルース

Kunzite from Afghanistan 12mm/8.834ct loose stone Sale price¥39,800
合成モアッサナイト 8.679ctルース

Synthetic Moissanite 8.679ct loose stone Sale price¥29,800
アルマンディンガーネット 0.814ctルース

Almandine Garnet 0.814ct Loose Stone Sale price¥7,980
アルマンディンガーネット 1.049ctルース

Almandine Garnet 1.049ct Loose Stone Sale price¥9,800
ロマネサイトインクォーツ 4.825ctルース

Romanesite in Quartz 4.825ct loose stone Sale price¥9,800
クロムトルマリン 0.760ctルース

Tanzanian Chrome Tourmaline 0.760ct Loose Stone Sale price¥5,980
スリランカ産クリソベリルキャッツアイ 0.490ctルース

[Sale on 5/24 at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.1mm/0.490ct Loose Stone Sale price¥15,800
[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 Sale price¥6,980
合成モアッサナイト1石ルース（ミントグリーン,ペアシェイプカット,5×7mm)

Synthetic moissanite 1 stone loose (mint green, pear shape cut, 5 x 7 mm, moissanite)《Multiple purchase discount available》 Sale price¥3,980
Synthetic moissanite 1 stone loose (blue moissanite, 1.2mm)《Multiple purchase discount available》

Synthetic moissanite 1 stone loose (blue moissanite, 1.2mm)《Multiple purchase discount available》 Sale price¥1,000
1 Dragon Garnet (3.5mm, round cut) {Multiple purchase discounts available}

1 Dragon Garnet (3.5mm, round cut) {Multiple purchase discounts available} Sale price¥3,980
Gem Gacha💎 Lepidolite in Quartz 1 stone《Multiple purchase discount available》

Gem Gacha💎 Lepidolite in Quartz 1 stone《Multiple purchase discount available》 Sale price¥3,980
ブラジル産ルチルレイテッドクォーツ1石ルース（6mm）《複数購入割引有》

Brazilian rutilated quartz (rutilated quartz) 1 loose stone (6mm) {Multiple purchase discounts available} Sale price¥1,500
1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》

1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》 Sale price¥1,500
Brazilian rutilated quartz (rutile/rutile quartz (rutilated quartz)) 1 loose stone (6.0-6.5mm, for beginners) {Multiple purchase discounts available}

Brazilian rutilated quartz (rutile/rutile quartz (rutilated quartz)) 1 loose stone (6.0-6.5mm, for beginners) {Multiple purchase discounts available} Sale price¥2,580
合成モアッサナイト1石ルース（ミントグリーン,オーバルカット,6×4mm)

Synthetic moissanite 1 stone loose (mint green, oval cut, 6 x 4 mm, moissanite)《Multiple purchase discount available》 Sale price¥3,980
ネパール産オーシャンブルーカイヤナイト＋ブルーカイヤナイト2石セット《複数購入割引有》

Limited to 20 sets: Nepalese Ocean Blue Kyanite + Blue Kyanite 2-stone set (Multiple purchase discounts available) Sale price¥3,980
Officially Licensed Product: Limited Quantity & Limited Time 15% Off (¥35,800 → ¥29,800) Yokohama DeNA BayStars Home Blue Ring - Double Type | SV925, Sea Blue Chalcedony, White Chalcedony

Officially Licensed Product: Limited Quantity & Limited Time 15% Off (¥35,800 → ¥29,800) Yokohama DeNA BayStars Home Blue Ring - Double Type | SV925, Sea Blue Chalcedony, White Chalcedony Sale price¥29,800
{For beginners} Gem gacha💎 1 loose gemstone (Chrome tourmaline, Mahenge spinel, etc.) cut by Sri Lankan craftsman Sanjay {Multiple purchase discounts available}

{For beginners} Gem gacha💎 1 loose gemstone (Chrome tourmaline, Mahenge spinel, etc.) cut by Sri Lankan craftsman Sanjay {Multiple purchase discounts available} Sale price¥3,980
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
Limited Quantity: Colombian Mango Quartz (Small - Thick) Multiple Purchase Discounts Available

Limited Quantity: Colombian Mango Quartz (Small - Thick) Multiple Purchase Discounts Available Sale price¥1,280
ルチルクォーツ1石ルース（12mm）《複数購入割引有》

Rutilated quartz 1 stone loose (12mm)《Multiple purchase discount available》 Sale price¥1,980
Limited Edition Tucson Lucky Dip Gems 💎 Guaranteed 1 stone from 8 types (Benitoite, Anthill Garnet, Dumortierite in Quartz, Eudialyte, etc.) 《Multi-purchase discount available》

Limited Edition Tucson Lucky Dip Gems 💎 Guaranteed 1 stone from 8 types (Benitoite, Anthill Garnet, Dumortierite in Quartz, Eudialyte, etc.) 《Multi-purchase discount available》 Sale price¥3,980
Officially Licensed Product: Limited Quantity & Limited Time 15% Off (¥25,800 → ¥21,800) Yokohama DeNA BayStars Home Blue Ring - Single Type | SV925 with White Chalcedony

Officially Licensed Product: Limited Quantity & Limited Time 15% Off (¥25,800 → ¥21,800) Yokohama DeNA BayStars Home Blue Ring - Single Type | SV925 with White Chalcedony Sale price¥21,800

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'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.