La line

宝石研磨に挑戦してみよう「自分で出来る原石磨きセット」（中級者向け：ホワイトラブラドライト）

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for intermediate users: white labradorite) Sale price¥3,980

1 Ruby from Greenland (round cut, 1.2mm)《Discount available for multiple purchases》 Sale price¥2,280

Indian Andesine Labradorite (hexagonal cut, 3 x 5mm) 1 stone (discount available for multiple purchases) Sale price¥2,980

Limited to 23 stones: Labradorite & Andesine Labradorite 2-stone set (Hexagonal cut, 3mm) Multiple purchase discounts available Sale price¥2,980

Brazilian rutilated quartz (rutilated quartz) 1 loose stone (6mm) {Multiple purchase discounts available} 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} Sale price¥2,580

Limited to 18 stones: Mozambique ruby (princess cut, 2.3-2.5mm) Multiple purchase discounts available Sale price¥3,980

Rutilated quartz 1 stone loose (12mm)《Multiple purchase discount available》 Sale price¥1,980

《Hong Kong Sourcing – Limited 24 Stones》Vivid Pakistan Lazulite Loose Stone 《Multiple Purchase Discount Available》 Sale price¥5,980

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

Limited to 13 stones! Tourmaline gacha featuring indigolite tourmaline worth ¥50,000 and rubellite worth ¥60,000. Plus, one canary yellow tourmaline. Discounts available for multiple purchases. Sale price¥6,980

Labradorite 1 stone loose (12 x 16mm)《Multiple purchase discount available》 Sale price¥2,580

Limited to 11 stones: Brazilian rhodonite in quartz (cabochon, 7.5-8.5mm) 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980

【9/22 22時販売】《限定10石》通常59,800円の甲州貴石切子plusthree「昴」ファイアオパールや29,800円のKEN氏コントラルスオパールのメキシコ産オパールガチャ1石（北海道産ロードクロサイト1石付き）《複数購入割引有》 Sale price¥6,980

《Limited to 12 Stones》Madagascar Andesine-Labradorite (Rainbow Moonstone & Blue Moonstone) 2-Stone Set (Average 0.60ct)《Multiple Purchase Discount Available》 Sale price¥3,980

[Available 10/2 at 10 PM] 《Limited to 16 stones》 Indian Andesine-Labradorite Gacha Loose Stone, Ojiki-cut (Avg. 1.3ct) 《Multi-purchase discounts available》 Sale price¥2,580

[On sale July 10 at 10 PM] Limited 8 stones: Sweet Home Mine rhodochrosite single loose stone (average 0.1 ct) [Multiple purchase discount available] Sale price¥2,980

Limited quantity: 1 impregnated ruby loose (4mm, round cut, identification instructions included) Multiple purchase discounts available Sale price¥1,980

Limited to 18 Stones: 3mm Rhodolite Garnet from Sri Lanka, 1 stone loose. Discounts for multiple purchases. Sale price¥2,980

Limited to 7 stones: 1 Tanzanian rhodolite garnet loose stone (polished by American polisher KEN) Multiple purchase discounts available Sale price¥3,980

[Available 9/19 at 10 PM] <9 sets only> Rainbow Garnet rough & loose stone set from Tenkawa, Nara (includes one hexagonal pyrite) <multi-buy discount available></multi-buy>

[Available 9/19 at 10 PM] <9 sets only> Rainbow Garnet rough & loose stone set from Tenkawa, Nara (includes one hexagonal pyrite) Sale price¥6,980

[On sale May 10th, 10 PM JST] 6 Limited Pieces - Brazilian Mica in Rose Quartz (One stone), Multiple Purchase Discount Available Sale price¥2,980

Limited to 7 stones: 1 loose Andesine Labradorite stone from Madagascar. Discounts available for multiple purchases. Sale price¥2,980

《Only 1 left》Labradorite loose stone (20x15mm, for beginners) 《Multi-buy discount available》 Sale price¥3,980

Limited to 5 stones: 1 Brazilian Rhodonite in Quartz (faceted cut) (Multiple purchase discounts available) Sale price¥4,980

Labradorite 1 stone (spherical, 6mm) loose (multiple purchase discount available) Sale price¥2,980

1.758 ct Ruby Loose Stone from Vietnam with Identification Report Sale price¥49,800

Mozambique Ruby 0.544ct Loose Stone with Certificate of Authenticity Sale price¥39,800

[Ref: 22602726] [Colorful] K18WG Ruby & 0.02ct Diamond Ring with Appraisal Report Sale price¥98,000

[Posted on 22602707] [Colorful] Pt900 Rubellite 1.308ct Ring Sale price¥158,000

[Item 12564461] Dominican Republic Larimar 3.420ct Loose Gemstone Sale price¥12,800

[Available 10/3, 10:00 PM] 《Limited 4 stones》 Sweet Home Mine, USA Rhodochrosite Loose Stone (6x4mm Cabochon Cut) 《Multiple purchase discount available》 Sale price¥5,980

[Mon, Sep 14, 10:00 AM Deadline: Lottery Sale_09] Unheated Pigeon Blood Ruby 0.620ct Loose Stone AIGS Sale price¥148,000

[Available 10/4, 10 PM] Synthetic Ruby 1.803ct Loose Gemstone Sale price¥18,800

[10/4, 10:00 PM Sale] Synthetic Ruby 1.182ct Loose Stone Sale price¥12,800

[Available 10/5 at 10:00 PM] Tanzanian Rhodolite Garnet 0.510ct Loose Stone Sale price¥9,800

[Item 12561430] Unheated Pigeon Blood Ruby 0.510ct Loose Stone Sale price¥89,800

[Item 12564350] Ethiopian Sunstone 1.228ct Loose Gemstone Sale price¥18,800

[Available 9/27 at 10 PM] Madagascar Andesine-Labradorite (Common name: Blue Moonstone) 4.518ct Loose Stone Sale price¥29,800

[9/14 (Mon) 10:00 AM Deadline: Lottery Sale_08] Unheated Pigeon Blood Ruby 0.270ct Loose Stone AIGS Sale price¥48,800

[Available 9/25, 10 PM] Pigeon Blood Ruby 3.6mm/0.220ct Loose Gemstone AIGS Sale price¥49,800

[Available 9/22, 10 PM] Unheated Pigeon Blood Ruby 0.310ct Loose AIGS Sale price¥49,800

[On sale 9/20 at 22:00] [Color-free] Pt950 Red Beryl 0.20ct / Diamond 0.23ct Ring with Appraisal Report Sale price¥98,000

[Lottery Sale 0818_12] Loose 0.251ct Red Beryl (USA) with Certificate Sale price¥98,000

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 1.742ctルース

Andesine-Labradorite (commonly known as Rainbow Moonstone) from Madagascar, 1.742ct loose gemstone Sale price¥37,800

アフガニスタン産アフガニスタン産ラズライトインソーダライト 0.425ctルース

[Available 9/18 10:00 PM] Lazulite in Sodalite from Afghanistan 0.425ct Loose Gemstone Sale price¥9,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.521ctルース

[9/20 10:00 PM Release] Madagascar Andesine Labradorite (Common name: Rainbow Moonstone) 0.521ct Loose Stone Sale price¥8,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.328ctルース

[Available 9/25 at 10 PM] Madagascar Andesine-Labradorite (Common name: Rainbow Moonstone) 0.328ct Loose Stone Sale price¥9,800

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.