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Sold out Gem Gacha💎Mexican Cantera Opal《Multiple Purchase Discount》

Gem Gacha💎Mexican Cantera Opal《Multiple Purchase Discount》

Sold out Dragon Garnet 1 stone (2.0mm, round cut)《Discount available for multiple purchases》

Dragon Garnet 1 stone (2.0mm, round cut)《Discount available for multiple purchases》

Sold out Bi-color tourmaline 1 stone loose (bought in Bangkok)

Bi-color tourmaline 1 stone loose (bought in Bangkok)

Sold out [Sales End on November 15th] "Bungo to Alchemist" x KARATZ Collaboration Jewelry Bungo Ring [Dazai Osamu Model] {Almandine Garnet, Yellow Diamond}

[Sales End on November 15th] "Bungo to Alchemist" x KARATZ Collaboration Jewelry Bungo Ring [Dazai Osamu Model] {Almandine Garnet, Yellow Diamond}

Sold out Gem Gacha💎 Dragon Garnet 1 stone (4mm to max 7.5mm)

Gem Gacha💎 Dragon Garnet 1 stone (4mm to max 7.5mm)

Sold out 【ジェムガチャ】宝石1石（ダイヤモンドH&C中宝ソ,ピンクダイヤモンド3.3mmUP,タンザニア産レッドサファイアなど）1石が当たる！さらに2個以上購入で10月誕生石「ペルー産ブルーオパール＆ブラジル産トルマリン2石セット」が必ず貰える《複数購入割引有》

【ジェムガチャ】宝石1石（ダイヤモンドH&C中宝ソ,ピンクダイヤモンド3.3mmUP,タンザニア産レッドサファイアなど）1石が当たる！さらに2個以上購入で10月誕生石「ペルー産ブルーオパール＆ブラジル産トルマリン2石セット」が必ず貰える《複数購入割引有》
Sold out サファイア原石 色違い2石（UVタイプ・マダガスカル産） - KARATZ STORE｜カラッツSTORE

Sapphire rough 2 stones in different colors (UV type, from Madagascar)《Multiple purchase discount available》

Sold out 【8月誕生石】ペリドット原石・ルース2石セット - カラッツSTORE

[August birthstone] Peridot raw stone/loose 2 stone set《Multiple purchase discount available》

Sold out 1 bicolor tourmaline (faceted cut)

1 bicolor tourmaline (faceted cut)

Sold out 「決定版 アンカットダイヤモンド」サイン入り初版本 ＆ダイヤモンド原石（グリーン蛍光）2点セット

"Definitive Uncut Diamond" by Kyoichi Suwa, signed first edition & 2-piece set of diamonds (hexagonal cut)

Sold out 1 stone demantoid garnet loose (radiant cut) from Namibia《Discount available for multiple purchases》

1 stone demantoid garnet loose (radiant cut) from Namibia《Discount available for multiple purchases》

Sold out オパール 1石（オーバル、6×4mm） - KARATZ STORE｜カラッツSTORE

Opal 1 stone (oval, 6 x 4mm)《Multiple purchase discount available》

Sold out Bi-color tourmaline gacha💎In addition, one out of every two people will win a watermelon tourmaline (multiple purchase discount available)

Bi-color tourmaline gacha💎In addition, one out of every two people will win a watermelon tourmaline (multiple purchase discount available)

Sold out Ametrine 1 stone (approximately 60~70ct)《Discount available for multiple purchases》

Ametrine 1 stone (approximately 60~70ct)《Discount available for multiple purchases》

Sold out スター・フラワーカットのベリリウム拡散処理サファイア 1石《9月誕生石》

1 star flower cut beryllium diffused sapphire (September birthstone)

Sold out [Sales End on November 15th] "Bungo to Alchemist" x KARATZ Collaboration Jewelry Bungo Ring [Izumi Kyoka Model] Sky Blue Topaz Yellow Sapphire

[Sales End on November 15th] "Bungo to Alchemist" x KARATZ Collaboration Jewelry Bungo Ring [Izumi Kyoka Model] Sky Blue Topaz Yellow Sapphire

Sold out 《With translation》1 unheated silky pink sapphire from Vietnam (round cut) 《Discount available for multiple purchases》

《With translation》1 unheated silky pink sapphire from Vietnam (round cut) 《Discount available for multiple purchases》

Sold out ウォーターメロントルマリン原石 1石

Watermelon tourmaline rough stone 1 stone《Multiple purchase discount available》

Sold out 1 Bekily Blue Garnet from Madagascar (2mm, round cut)《Multiple purchase discounts available》

1 Bekily Blue Garnet from Madagascar (2mm, round cut)《Multiple purchase discounts available》
Sold out 【猫カット】アメジスト（8mm） - カラッツSTORE

[Cat cut] Amethyst (8mm)

Sold out 含浸ルビー・天然ルビー見分け2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] 2-piece set for distinguishing impregnated rubies and natural rubies (discount available for multiple purchases)

Sold out [Sales End on November 15th] "Bungo to Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model] {Smoky Quartz, London Blue Topaz}

[Sales End on November 15th] "Bungo to Alchemist" x KARATZ Collaboration Jewelry Literary Ring [Akutagawa Ryunosuke Model] {Smoky Quartz, London Blue Topaz}

Sold out Dragon Garnet 1 stone (3.0mm, round cut)《Discount available for multiple purchases》

Dragon Garnet 1 stone (3.0mm, round cut)《Discount available for multiple purchases》

Sold out バンカチャサファイア（ローズカット）1石《チャンタブリ買付品》

Bangkacha sapphire (rose cut) 1 stone (purchased in Chanthaburi)

Sold out トラピッチェダイヤモンド（一部蛍光グリーン）

1 Trapiche diamond (some fluorescent green)

Sold out 《再入荷》シュガーローフカットのアルマンディンガーネット1石 5mm - カラッツSTORE

[Restocked] Sugarloaf cut almandine garnet 1 stone 5mm

Sold out [Only one left] 1 Opal (oval cut, 7 x 5 mm) {Multiple purchase discounts available}

[Only one left] 1 Opal (oval cut, 7 x 5 mm) {Multiple purchase discounts available}

Sold out Set of 2 to 5 stones such as garden quartz and tourmaline in quartz

Set of 2 to 5 stones such as garden quartz and tourmaline in quartz

Sold out Diamond gacha 💎Diamond gacha (treatment) where you can win a 12 stone set of color rings, ice blue diamonds, and purple diamonds (discount for multiple purchases available) [3,980 yen]

Diamond gacha 💎Diamond gacha (treatment) where you can win a 12 stone set of color rings, ice blue diamonds, and purple diamonds (discount for multiple purchases available) [3,980 yen]

Sold out Dragon Garnet x 1 (3.5mm, round cut) {Multiple purchase discount available}

Dragon Garnet x 1 (3.5mm, round cut) {Multiple purchase discount available}

Sold out 1 dragon garnet stone (4.5mm, round cut)

1 dragon garnet stone (4.5mm, round cut)

Sold out バイカラーサファイア（プリンセスカット）1石 - KARATZ STORE｜カラッツSTORE

Bicolor sapphire (princess cut) 1 stone (discount available for multiple purchases)

Sold out コロンビア産トラピッチェエメラルド（逆トラピッチェ）

Colombian trapiche emerald (reverse trapiche)

Sold out Brazilian bicolor citrine 1 stone loose (November birthstone, 6 x 4 mm) {Multiple purchase discount available} {For beginners}

Brazilian bicolor citrine 1 stone loose (November birthstone, 6 x 4 mm) {Multiple purchase discount available} {For beginners}
Sold out {3/31 Reception ends} "PSYCHO-PASS" x KARATZ collaboration jewelry: Public Safety Bureau Criminal Investigation Division Device Image Ring, Enforcer Design [Masataka Tomomi Model] {Moonstone}

{3/31 Reception ends} "PSYCHO-PASS" x KARATZ collaboration jewelry: Public Safety Bureau Criminal Investigation Division Device Image Ring, Enforcer Design [Masataka Tomomi Model] {Moonstone}

Sold out マダガスカル産ベキリーブルーガーネット＆ベキリーグリーンガーネット2石セット

Bekily Blue Garnet & Bekily Green Garnet 2 stone set from Madagascar《Multiple purchase discount available》

Sold out Bi-color fluorite & bi-color tourmaline (watermelon tourmaline) 2 stone set (one out of every two will give you an extra watermelon tourmaline)

Bi-color fluorite & bi-color tourmaline (watermelon tourmaline) 2 stone set (one out of every two will give you an extra watermelon tourmaline)

Sold out ロンドンブルートパーズ1石ルース（6mm,クッションカット,約1.3ct)

London Blue Topaz 1 stone loose (6mm, cushion cut)《Multiple purchase discount available》

Sold out ローズカットのエチオピア産オパール 4mm 1石《10月誕生石》

Rose cut Ethiopian opal 4mm 1 stone《October birthstone》

Sold out マルチカラートルマリン1石ルース（オクタゴナルカット）

Multi-colored tourmaline 1 stone loose (octagonal cut)《Multiple purchase discount available》

Sold out 【猫カット】《子猫2石セット》3月誕生石アクアマリン＆スイスブルートパーズ

[Cat cut]《Kitten 2 stone set》March birthstone aquamarine & Swiss blue topaz

Sold out 【宝石商の道具】冷却ヒビ入れ染色クォーツ・天然エメラルド見分け2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] Cooling Cracked Dyed Quartz/Natural Emerald Identification 2-piece Set (Discount available for multiple purchases)

Sold out Brazilian Paraiba Tourmaline (1.0mm, top quality)《Multiple purchase discount available》

Brazilian Paraiba Tourmaline (1.0mm, top quality)《Multiple purchase discount available》

Sold out {3/31 Reception closes} "PSYCHO-PASS" x KARATZ collaboration jewelry: Public Safety Bureau Criminal Investigation Division Device Image Ring, Enforcer Design [Rokuitsuka Yayoi Model] {Ice Blue Sapphire}

{3/31 Reception closes} "PSYCHO-PASS" x KARATZ collaboration jewelry: Public Safety Bureau Criminal Investigation Division Device Image Ring, Enforcer Design [Rokuitsuka Yayoi Model] {Ice Blue Sapphire}

Sold out Diamond gacha💎Diamond gacha (treatment) where you can win purple diamonds and ice blue diamonds (multiple purchase discount available)

Diamond gacha💎Diamond gacha (treatment) where you can win purple diamonds and ice blue diamonds (multiple purchase discount available)

Sold out Pakistani Ludwigite in Peridot 1 stone (August birthstone) {Multiple purchase discounts available}

Pakistani Ludwigite in Peridot 1 stone (August birthstone) {Multiple purchase discounts available}
Sold out Gem Gacha💎Rose cut diamond (fluorescent orange, green, yellow)

Gem Gacha💎Rose cut diamond (fluorescent orange, green, yellow)

Sold out ツァボライト（約3×4mm,ペアシェイプ）1石

1 stone of tsavorite (approx. 3 x 4 mm, pear shape)

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments