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Sold out [On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ collaboration: Original random acrylic keychains

[On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ collaboration: Original random acrylic keychains

Sold out [On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ collaboration original acrylic stand

[On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ collaboration original acrylic stand

Sold out [On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ collaboration original glitter tin badge

[On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ collaboration original glitter tin badge

Sold out [On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ Collaboration Original Clear Postcard Set

[On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ Collaboration Original Clear Postcard Set

Sold out [On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ Collaboration Original Sticker Set

[On sale Friday, March 13th at 10pm] Anime "Hell Teacher Nube" x KARATZ Collaboration Original Sticker Set

Sold out Limited Edition of 10 Bicolor Gacha! 💎 Includes two Zimbabwean euclase stones (average 0.088ct), a 1.03ct bicolor sapphire, a bicolor chrysoberyl, and more. Discounts available for multiple purchases.

Limited Edition of 10 Bicolor Gacha! 💎 Includes two Zimbabwean euclase stones (average 0.088ct), a 1.03ct bicolor sapphire, a bicolor chrysoberyl, and more. Discounts available for multiple purchases.
Sold out Limited Edition of 11 Rare Stones! 💎 Two 0.23ct Paraiba Tourmalines from Batalha, Brazil, a Pink Diamond, and a Benitoite Loose Stone. Discounts available for multiple purchases.

Limited Edition of 11 Rare Stones! 💎 Two 0.23ct Paraiba Tourmalines from Batalha, Brazil, a Pink Diamond, and a Benitoite Loose Stone. Discounts available for multiple purchases.
Sold out One loose, oil-free emerald from Russia (2.8mm, round cut) (Multiple purchase discounts available)

One loose, oil-free emerald from Russia (2.8mm, round cut) (Multiple purchase discounts available)
Sold out 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]

Sold out 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]

Sold out 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） 4.868ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 4.868ct Loose Stone

Sold out Color Change Gacha💎 Burmese Color Change Zircon, Color Shift Sapphire, Color Shift Cobalt Spinel, and More (Multiple Purchase Discounts Available)

Color Change Gacha💎 Burmese Color Change Zircon, Color Shift Sapphire, Color Shift Cobalt Spinel, and More (Multiple Purchase Discounts Available)
Sold out Brazilian Dendritic Quartz Kitten Cut Loose Stone (For Beginners) (5mm) (Multiple Purchase Discounts Available)

Brazilian Dendritic Quartz Kitten Cut Loose Stone (For Beginners) (5mm) (Multiple Purchase Discounts Available)
Sold out Limited to 3 stones: Myanmar gray spinel and platinum spinel (4.0mm, round cut) loose stone (multiple purchase discounts available)

Limited to 3 stones: Myanmar gray spinel and platinum spinel (4.0mm, round cut) loose stone (multiple purchase discounts available)

Sold out Greenland Ruby Loose (approx. 2.3mm, Top Color, Certificate Included) (Multiple Purchase Discounts Available)

Greenland Ruby Loose (approx. 2.3mm, Top Color, Certificate Included) (Multiple Purchase Discounts Available)

Sold out Mini Kite Cut Loose Stone (Includes 2 Paraiba Tourmalines, Green Beryl, Ruby, Peridot, etc.) {Multiple Purchase Discounts Available}

Mini Kite Cut Loose Stone (Includes 2 Paraiba Tourmalines, Green Beryl, Ruby, Peridot, etc.) {Multiple Purchase Discounts Available}

Sold out 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]

Sold out ブラジル産レインボーアクアマリン 2.698ctルース

Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 2.698ct Loose Stone
Sold out Limited to 15 stones: Blue Stone Gacha (Top-Color Benitoite 2.0mm, Paraiba Tourmaline in Quartz, Unheated Yogo Sapphire) (Multiple purchase discounts available)

Limited to 15 stones: Blue Stone Gacha (Top-Color Benitoite 2.0mm, Paraiba Tourmaline in Quartz, Unheated Yogo Sapphire) (Multiple purchase discounts available)
Sold out Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.131ct Loose Stone

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.131ct Loose Stone
Sold out 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)
Sold out 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)
Sold out スペイン産バイカラースファレライト 0.727ctルース

0.727ct Bicolor Sphalerite Loose Stone from Spain
Sold out 奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.577ctルース

Rainbow Garnet (Andradite Garnet) 0.577ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out 奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.439ctルース

Rainbow Garnet (Andradite Garnet) 0.439ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out ブラジル産ゴーシェナイト 1.611ctルース

Brazilian Goshenite 1.611ct loose stone
Sold out 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
Sold out 【12551738掲載】翡翠（ヒスイ） 69.859ctルース

[12551738] Jadeite 69.859ct loose stone
Sold out ゴーシェナイト 1.080ctルース

[12549595 published] Goshenite 1.080ct loose
Sold out 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） 3.828ctルース

[Posted 12548519] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.828ct loose

Sold out 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） 3.762ctルース

[Posted 12548515] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.762ct loose

Sold out 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） 4.199ctルース

[Posted 12548511] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 4.199ct loose

Sold out 【12547810更新】インペリアルトパーズ 5.667ct原石

[Updated 12547810] Imperial Topaz 5.667ct rough stone
Sold out 【12547809更新】インペリアルトパーズ 3.516ct原石

[Updated 12547809] Imperial Topaz 3.516ct rough stone
Sold out 【12547808更新】インペリアルトパーズ 7.170ct原石

[Updated 12547808] Imperial topaz 7.170ct rough stone
Sold out Limited to 3 stones: Synthetic Black Moissanite Loose Stone (2.5mm, Round Cut) - Multiple Purchase Discounts Available

Limited to 3 stones: Synthetic Black Moissanite Loose Stone (2.5mm, Round Cut) - Multiple Purchase Discounts Available
Sold out 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]
Sold out 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.
Sold out 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
Sold out Limited to 4 stones: Sri Lankan Rhodolite Garnet (4mm, Round Cut) - 1 loose stone (Multiple purchase discounts available)

Limited to 4 stones: Sri Lankan Rhodolite Garnet (4mm, Round Cut) - 1 loose stone (Multiple purchase discounts available)
Sold out ティンカーベルクォーツ（ピンクファイヤークォーツ） 5.001ctルース

Tinker Bell Quartz (Pink Fire Quartz) 5.001ct loose
Sold out 【ルージュカット】アルマンディンガーネット 1.725ctルース

[Rouge cut] Almandine garnet 1.725ct loose
Sold out UVタイプミントガーネット 0.435ctルース

UV type mint garnet 0.435ct loose

Sold out UVタイプミントガーネット 0.521ctルース

UV type mint garnet 0.521ct loose

Sold out ナミビア産ジェレメジェバイト 0.034ctルース

Jeremejevite from Namibia 0.034ct loose

Sold out タンザニア産ピンクゾイサイト 3.206ct原石

Pink zoisite 3.206ct rough stone from Tanzania
Sold out 合成ルチル 2.031ctルース

Synthetic rutile 2.031ct loose
Sold out ブラジル産レインボースキャポライト 0.652ctルース

Brazilian rainbow scapolite 6mm/0.652ct loose

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.