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インド産アイオライトサンストーン 0.228ctルース

Indian Iolite Sunstone 0.228ct Loose Stone Sale price¥6,980
ブラジル産アメジスト 5.883ctルース

Brazilian Amethyst 5.883ct Loose Stone Sale price¥9,800
メキシコ産オパール（ファセットカット） 0.242ctルース

Mexican Opal (Faceted) 0.242ct Loose Sale price¥8,800
パキスタン産ルードヴィッヒアイトインペリドット 0.615ctルース

Pakistani Ludwigite Peridot 0.615ct Loose Stone Sale price¥7,980
ブラジル産ルチルクォーツ（ルチルレイテッドクォーツ） 5.333ctルース

Brazilian Rutile Quartz (Rutile-Rated Quartz) 12mm/5.333ct Loose Stone Sale price¥9,800
ドミニカ共和国産ラリマー 2.472ctルース

2.472ct loose Larimar from the Dominican Republic Sale price¥6,980
ロシア産デマントイドガーネット（ホーステール認む） 0.036ctルース

Russian Demantoid Garnet (Horsetail) 0.036ct Loose Stone Sale price¥6,980
ドミニカ共和国産ラリマー 2.568ctルース

2.568ct loose Larimar from the Dominican Republic Sale price¥8,800
アクアマリン 0.334ctルース

Brazilian Aquamarine 0.334ct Loose Stone Sale price¥6,980
カラーシフトアメジスト 0.849ctルース

Brazilian Color-Shifting Amethyst 0.849ct Loose Stone Sale price¥8,800
ブルートパーズ 0.754ctルース

Brazilian Blue Topaz 5.5mm/0.754ct Loose Stone Sale price¥5,980
ロードライトガーネット 1.052ctルース

Mozambique Rhodolite Garnet 1.052ct Loose Stone Sale price¥8,800
[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original random acrylic keychains

[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original random acrylic keychains Sale priceFrom ¥770
[Sales start at 10:00 PM on Friday, October 31st] New anime "Hell Teacher Nube" x KARATZ collaboration original acrylic stand

[Sales start at 10:00 PM on Friday, October 31st] New anime "Hell Teacher Nube" x KARATZ collaboration original acrylic stand Sale price¥1,650
[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original glitter tin badges

[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original glitter tin badges Sale price¥660
[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original clear postcard set

[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original clear postcard set Sale price¥660
[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original sticker set

[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original sticker set Sale price¥1,320
Limited to 15 stones: One loose, unheated silky pink sapphire from Vietnam (2.5mm, round cut) [Multiple purchase discounts available]

Limited to 15 stones: One loose, unheated silky pink sapphire from Vietnam (2.5mm, round cut) [Multiple purchase discounts available] Sale price¥3,980
Limited to 14 stones: One loose Mozambique hot pink sapphire (pear-shaped, approximately 4 x 3 mm) [Multiple purchase discounts available]

Limited to 14 stones: One loose Mozambique hot pink sapphire (pear-shaped, approximately 4 x 3 mm) [Multiple purchase discounts available] Sale price¥4,980
Only one left! Brazilian dendritic quartz kitten cut loose stone (for beginners) (5mm) [Multiple purchase discounts available]

Only one left! Brazilian dendritic quartz kitten cut loose stone (for beginners) (5mm) [Multiple purchase discounts available] Sale price¥3,980
Limited Quantity: Myanmar Gray Spinel/Platinum Spinel (2.0mm, Round Cut) - Single Loose Stone (Multiple Purchase Discounts Available)

Limited Quantity: Myanmar Gray Spinel/Platinum Spinel (2.0mm, Round Cut) - Single Loose Stone (Multiple Purchase Discounts Available) Sale price¥4,980
Limited to 7 stones: One loose, oil-free Russian emerald (1.5-1.6mm, step cut) [Multiple purchase discounts available]

Limited to 7 stones: One loose, oil-free Russian emerald (1.5-1.6mm, step cut) [Multiple purchase discounts available] Sale price¥5,980
タンザニア産ペリステライト 0.503ctルース

Tanzanian Peristerite 5.1mm/0.503ct Loose Stone (Rose Cut) Sale price¥9,800
タンザニア産ペリステライト 0.458ctルース

Tanzanian Peristerite 5.1mm/0.458ct Loose Stone (Rose Cut) Sale price¥9,800
ブラジル産ロンドンブルートパーズ 0.415ctルース

Brazilian London Blue Topaz 0.415ct Loose Stone Sale price¥6,980
オーストラリア産ボルダーオパール 1.457ctルース

Australian boulder opal 1.457ct loose stone Sale price¥9,800
ブラジル産モルガナイト 0.377ctルース

Brazilian Morganite 0.377ct loose stone Sale price¥8,800
オーストラリア産プレーナイト 1.758ctルース

Australian Prehnite 1.758ct loose stone Sale price¥9,800
ブラジル産アクアマリン 0.428ctルース

Brazilian Aquamarine 0.428ct Loose Stone Sale price¥8,800
パキスタン産スフェーン 0.396ctルース

Pakistani sphene 0.396ct loose stone Sale price¥9,800
インド産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.450ctルース

Indian Andesine Labradorite (also known as Rainbow Moonstone) 0.450ct Loose Stone Sale price¥9,800
ゴーシェナイト 1.080ctルース

[12549595 published] Goshenite 1.080ct loose Sale price¥8,800
イエロートルマリン 0.469ctルース

[Posted in 12548907] Yellow tourmaline 0.469ct loose Sale price¥8,800
スターサファイア 1.325ctルース

[12548587 published] Star sapphire from Sri Lanka 1.325ct loose Sale price¥5,980
バイカラートルマリン 0.398ctルース

[12547847 published] Bicolor tourmaline 0.398ct loose Sale price¥8,800
ピンクトルマリン 0.605ctルース

[12547844 published] Pink tourmaline 0.605ct loose Sale price¥8,800
ブラジル産デュモルチェライトインクォーツ 0.975ctルース（ファセットカット）

[Posted 12547829] Brazilian Dumortierite in Quartz 0.975ct loose Sale price¥9,800
Limited Edition Synthetic Moissanite Gacha! 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite Loose Stones Available. Multiple Purchase Discounts Available.

Limited Edition Synthetic Moissanite Gacha! 💎 Koshu Kiriko Plus Three Moissanite, Sange Cut, Pink, and Blue Moissanite Loose Stones Available. Multiple Purchase Discounts Available. Sale price¥4,980
Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available]

Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available] Sale price¥3,980
Limited to 10 stones: Brazilian Bicolor Tourmaline (Baguette Cut) - 1 loose stone. Discounts available for multiple purchases.

Limited to 10 stones: Brazilian Bicolor Tourmaline (Baguette Cut) - 1 loose stone. Discounts available for multiple purchases. Sale price¥3,980
Limited to 8 stones: Mexican Hyalite Opal Loose (Large 4ct, Fluorescent even in sunlight) Multiple purchase discounts available

Limited to 8 stones: Mexican Hyalite Opal Loose (Large 4ct, Fluorescent even in sunlight) Multiple purchase discounts available Sale price¥4,980
Limited to 9 stones. All stones come with appraisal certificates. 1 loose zoisite stone (yellow, pink-brown, green, etc.). Discounts available for multiple purchases.

Limited to 9 stones. All stones come with appraisal certificates. 1 loose zoisite stone (yellow, pink-brown, green, etc.). Discounts available for multiple purchases. Sale price¥6,980
Aquamarine 1.574ct loose stone

Aquamarine 1.574ct loose stone Sale price¥9,800
UVタイプミントガーネット 0.521ctルース

UV type mint garnet 0.521ct loose Sale price¥3,980
タンザニア産バイカラータンザナイト 1.165ct原石

Bicolor tanzanite 1.165ct rough stone from Tanzania Sale price¥7,980
タンザニア産バイカラータンザナイト 1.121ct原石

Bicolor tanzanite 1.121ct rough stone from Tanzania Sale price¥6,980
タンザニア産バイカラータンザナイト 0.492ct原石

Bicolor tanzanite 0.492ct raw stone from Tanzania Sale price¥6,980
バイカラートルマリン 0.418ctルース

Bicolor tourmaline 0.418ct loose Sale price¥3,980

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.