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[Available at 10 PM on December 6th] Limited Quantity! Guess what you'll receive! Gacha Set of 2 Rough and Loose Stones (Rare Stones Included) [Multiple Purchase Discounts Available]

[Available at 10 PM on December 6th] Limited Quantity! Guess what you'll receive! Gacha Set of 2 Rough and Loose Stones (Rare Stones Included) [Multiple Purchase Discounts Available] Sale price¥1,680
[Sales End on Sunday, November 30th] Adult Sebon Star Jewelry Series 3: Heart Key Lock Pendant, Silver Model (Silver/Gold Color), SV925

[Sales End on Sunday, November 30th] Adult Sebon Star Jewelry Series 3: Heart Key Lock Pendant, Silver Model (Silver/Gold Color), SV925 Sale price¥29,800
[Available at 10 PM on December 13th] Limited to 9 stones: Australian Black Opal (including semi-black opal) Loose Stone Gacha (Includes 1 bonus white opal) [Multiple purchase discounts available]

[Available at 10 PM on December 13th] Limited to 9 stones: Australian Black Opal (including semi-black opal) Loose Stone Gacha (Includes 1 bonus white opal) [Multiple purchase discounts available] Sale price¥5,980
[12/12 10 PM Sale] Limited to 15 stones! Includes a rare UNEVEN Fancy color gemstone (normally ¥39,800) and a 0.428ct Fancy color gemstone (¥69,800). Get one loose yellow diamond! Discounts available for multiple purchases.

[12/12 10 PM Sale] Limited to 15 stones! Includes a rare UNEVEN Fancy color gemstone (normally ¥39,800) and a 0.428ct Fancy color gemstone (¥69,800). Get one loose yellow diamond! Discounts available for multiple purchases. Sale price¥3,980
[Sale: Friday, December 19th, 10 PM] "Bungo and Alchemist" x KARATZ Collaboration Jewelry "Part 3" Bungo Ring [Edogawa Ranpo Model Ring]

[Sale: Friday, December 19th, 10 PM] "Bungo and Alchemist" x KARATZ Collaboration Jewelry "Part 3" Bungo Ring [Edogawa Ranpo Model Ring] Sale priceFrom ¥25,800
[On sale until 10 PM] Limited to 10 stones: Yamamoto Cut Gacha, featuring carnelian, lemon quartz, rock crystal, and more. Discounts available for multiple purchases.

[On sale until 10 PM] Limited to 10 stones: Yamamoto Cut Gacha, featuring carnelian, lemon quartz, rock crystal, and more. Discounts available for multiple purchases. Sale price¥7,980
[12/13 10 PM Sale] {Limited to 13 Stones} Tourmaline Gacha: Including Indigolite Tourmaline worth ¥50,000 and Rubellite worth ¥60,000. Plus, get one Canary Yellow Tourmaline. {Multiple Purchase Discounts Available}

[12/13 10 PM Sale] {Limited to 13 Stones} Tourmaline Gacha: Including Indigolite Tourmaline worth ¥50,000 and Rubellite worth ¥60,000. Plus, get one Canary Yellow Tourmaline. {Multiple Purchase Discounts Available} Sale price¥5,980
[Sale: Friday, December 19th, 10 PM] "Bungo and Alchemist" x KARATZ Collaboration Jewelry "Part 3" Bungo Ring [Kikuchi Kan Model Ring]

[Sale: Friday, December 19th, 10 PM] "Bungo and Alchemist" x KARATZ Collaboration Jewelry "Part 3" Bungo Ring [Kikuchi Kan Model Ring] Sale priceFrom ¥25,800
[On sale 12/6 at 10 PM] {Limited to 13 stones} Loose Spinel Gacha Stones, Including Sakura In-Cut and Dandelion Cut {Multiple purchase discounts available}

[On sale 12/6 at 10 PM] {Limited to 13 stones} Loose Spinel Gacha Stones, Including Sakura In-Cut and Dandelion Cut {Multiple purchase discounts available} Sale price¥4,980
[Available at 10 PM on December 20th] Limited to 11 Stones: Montana Sapphire (Rock Creek Mine) Gacha! 1 Loose Stone (Oval Cut, 5x3mm) [Multiple Purchase Discounts Available]

[Available at 10 PM on December 20th] Limited to 11 Stones: Montana Sapphire (Rock Creek Mine) Gacha! 1 Loose Stone (Oval Cut, 5x3mm) [Multiple Purchase Discounts Available] Sale price¥3,980
Limited to 14 stones: Beryllium-heated sapphire (3.5mm, KEN cut) - 1 loose stone. Discounts available for multiple purchases.

Limited to 14 stones: Beryllium-heated sapphire (3.5mm, KEN cut) - 1 loose stone. Discounts available for multiple purchases. Sale price¥1,580
December Special Campaign: Limited to 14 stones. December birthstone: Tanzanite, loose stone (5x7mm, oval cut). Multiple purchase discounts available.

December Special Campaign: Limited to 14 stones. December birthstone: Tanzanite, loose stone (5x7mm, oval cut). Multiple purchase discounts available. Sale price¥8,800
[Sale: Friday, December 19th, 10 PM] "Bungo and Alchemist" x KARATZ Collaboration Jewelry "Part 3" Bungo Ring [Oda Sakunosuke Model]

[Sale: Friday, December 19th, 10 PM] "Bungo and Alchemist" x KARATZ Collaboration Jewelry "Part 3" Bungo Ring [Oda Sakunosuke Model] Sale priceFrom ¥25,800
[Available at 10 PM on December 20th] Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]

[Available at 10 PM on December 20th] Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available] Sale price¥3,980
[Sale at 10 PM on December 20th] [Limited to 6 stones] Brazilian Pyrite in Quartz Loose Stone (Average 3.2 carats) [Multiple purchase discounts available]

[Sale at 10 PM on December 20th] [Limited to 6 stones] Brazilian Pyrite in Quartz Loose Stone (Average 3.2 carats) [Multiple purchase discounts available] Sale price¥3,980
American benitoite 0.147ct loose

American benitoite 0.147ct loose Sale price¥35,800
American benitoite 0.097ct loose

American benitoite 0.097ct loose Sale price¥24,800
American benitoite 0.101ct loose

American benitoite 0.101ct loose Sale price¥25,800
American benitoite 0.127ct loose

American benitoite 0.127ct loose Sale price¥28,800
American benitoite 0.133ct loose

American benitoite 0.133ct loose Sale price¥29,800
American benitoite 0.102ct loose

American benitoite 0.102ct loose Sale price¥22,800
American benitoite 0.187ct loose

American benitoite 0.187ct loose Sale price¥39,800
デマントイドガーネットキャッツアイ（ホーステール認む） 0.171ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 0.171ct loose Sale price¥15,800
デマントイドガーネットキャッツアイ（ホーステール認む） 0.222ctルース

Russian demantoid garnet cat's eye (horsetail recognized) 0.222ct loose Sale price¥18,800
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） 0.177ctルース

Andesine Labradorite (commonly known as Rainbow Moonstone) 0.177ct loose Sale price¥8,800
グリーンサファイア 0.348ctルース

Mint green sapphire 0.348ct loose Sale price¥9,800
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） 0.167ctルース

Andesine Labradorite (also known as Rainbow Moonstone) 3.6mm/0.167ct loose stone Sale price¥4,980
ミントカラートルマリン 0.198ctルース

Mint color tourmaline 0.198ct loose Sale price¥4,980
ミントカラートルマリン 0.229ctルース

Mint color tourmaline 0.229ct loose Sale price¥4,980
ピンクトルマリン 0.205ctルース

Pink tourmaline 0.205ct loose Sale price¥4,980
マダガスカル産バイカラーサファイア 0.252ctルース

Bicolor sapphire from Madagascar 0.252ct loose Sale price¥9,800
マダガスカル産バイカラーサファイア 0.259ctルース

Bicolor sapphire from Madagascar 0.259ct loose Sale price¥4,980
マダガスカル産バイカラーサファイア 0.198ctルース

Bicolor sapphire from Madagascar 0.198ct loose Sale price¥7,980
マダガスカル産バイカラーサファイア 0.212ctルース

Bicolor sapphire from Madagascar 0.212ct loose Sale price¥7,980
メキシコ産ウォーターオパール 1.100ctルース

Mexican water opal 0.212ct loose (contrarus opal) Sale price¥18,800
イエローサファイア 0.222ctルース

Yellow sapphire from Sri Lanka 0.222ct loose Sale price¥9,800
ゴーシェナイト 1.620ctルース

Goshenite 1.620ct loose Sale price¥15,800
ゴーシェナイト 1.989ctルース

Goshenite 1.989ct loose Sale price¥18,800
デンドリティックアゲート 2.964ctルース

Dendritic Agate 2.964ct loose Sale price¥8,800
トルコ産ダイアスポア 1.209ctルース

Diaspore 1.209ct loose from Türkiye Sale price¥15,800
トルコ産ダイアスポア 0.636ctルース

Diaspore from Türkiye 0.636ct loose Sale price¥9,800
ブラジル産カイヤナイトインクォーツ 13.740ctルース

Brazilian kyanite in quartz 13.740ct loose Sale price¥29,800
Brazilian kyanite in quartz 4.770ct loose

Brazilian kyanite in quartz 4.770ct loose Sale price¥12,800
Chinese aragonite 36.409ct loose with patch

Chinese aragonite 36.409ct loose with patch Sale price¥5,980
ブラジル産トラピッチェアメジスト 24.772ctルース

Brazilian Trapichea Amethyst 24.772ct loose with patch Sale price¥6,980
トルマリンキャッツアイ 0.910ctルース

Tourmaline cat's eye 0.910ct loose Sale price¥4,980
ベトナム産非加熱シルキーピンクサファイア 0.197ctルース

Unheated silky pink sapphire from Vietnam 0.197ct loose Sale price¥8,800
ベトナム産非加熱シルキーピンクサファイア 0.247ctルース

Unheated silky pink sapphire from Vietnam 0.247ct loose Sale price¥8,800

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.