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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)

Sold out 1 Ethiopian Opal (Baroque)《Discount available for multiple purchases》

1 Ethiopian Opal (Baroque)《Discount available for multiple purchases》

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

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

Sold out Gem Gacha💎 Trapiche Diamond (Sliced ​​Diamond) 1 stone {Multiple purchase discount available}

Gem Gacha💎 Trapiche Diamond (Sliced ​​Diamond) 1 stone {Multiple purchase discount available}

Sold out 1 stone demantoid garnet from Madagascar (2mm, round cut)《Tucson's most talked about stone》《Multiple purchase discount available》

1 stone demantoid garnet from Madagascar (2mm, round cut)《Tucson's most talked about stone》《Multiple purchase discount available》

Sold out マダガスカル産ベキリーブルーガーネット1石《ベキリーブルーガーネット初めての方向け》《複数購入割》

1 stone Bekily Blue Garnet from Madagascar (For those new to Bekily Blue Garnet)

Sold out Gem Gacha💎Diamond (with fluorescence)💎(Maximum 0.265ct)

Gem Gacha💎Diamond (with fluorescence)💎(Maximum 0.265ct)

Sold out ブラジル産パライバトルマリン（バターリャ）1石 1.1mm - KARATZ STORE｜カラッツSTORE

Brazilian Paraiba tourmaline (Batalha) 1 stone 1.1mm《Multiple purchase discount available》

Sold out グリーンランド産アイスルビー 1石（ハートシェイプ,4mm,ピンクサファイア）《複数購入割引有》

Greenland Ice Ruby 1 stone (heart shape, 4mm, pink sapphire) {Multiple purchase discount available}

Sold out UV type mint garnet 1 stone loose (oval cut)《Multiple purchase discount available》

UV type mint garnet 1 stone loose (oval cut)《Multiple purchase discount available》
Sold out 【5月誕生石】コロンビア産エメラルド原石1石（平均1.1ct） - カラッツSTORE

[May birthstone] 1 rough Colombian emerald stone (average 1.1 ct)《Multiple purchase discounts available》

Sold out 1 Brazilian Paraiba tourmaline stone (cabochon cut, average 0.25 ct)

1 Brazilian Paraiba tourmaline stone (cabochon cut, average 0.25 ct)

Sold out メキシコ産ウォーターオパール1石ルース《初心者向け》

1 stone loose water opal from Mexico《For beginners》

Sold out 【猫カット】ムーンストーン（6mm） - カラッツSTORE

[Cat cut] Moonstone (6mm)《Multiple purchase discount available》

Sold out サファイア原石 1石（ブルー系） - KARATZ STORE｜カラッツSTORE

1 rough sapphire stone (blue)

Sold out 《Limited to 15 stones》November birthstone 1 stone Imperial Topaz from Brazil《Multiple purchase discount available》《For beginners》

《Limited to 15 stones》November birthstone 1 stone Imperial Topaz from Brazil《Multiple purchase discount available》《For beginners》

Sold out Gem Gacha "April Birthstone"💎 Fluorescent Diamond (VS-SI class equivalent, treated, 3.75mm apple green color included) 1 stone {Multiple purchase discount available}

Gem Gacha "April Birthstone"💎 Fluorescent Diamond (VS-SI class equivalent, treated, 3.75mm apple green color included) 1 stone {Multiple purchase discount available}

Sold out ミャンマー・モゴック産非加熱ピンクサファイア結晶1石（原石）

1 unheated pink sapphire crystal from Mogok, Myanmar (raw stone)《Multiple purchase discounts available》

Sold out 1 stone citrine (snowflake cut, 13mm)

1 stone citrine (snowflake cut, 13mm)

Sold out Sky blue topaz (concave cut, 10mm) 1 stone

Sky blue topaz (concave cut, 10mm) 1 stone

Sold out Ametrine 1 stone (approximately 40~50ct)

Ametrine 1 stone (approximately 40~50ct)

Sold out Watermelon tourmaline raw stone + loose 3 stone set

Watermelon tourmaline raw stone + loose 3 stone set

Sold out Limited to 12 sets: Mozambique almandine garnet 2 stones (rough stone + loose stone) set (January birthstone) Multiple purchase discounts available

Limited to 12 sets: Mozambique almandine garnet 2 stones (rough stone + loose stone) set (January birthstone) Multiple purchase discounts available
Sold out [3 stones remaining] 1 rough Russian uvarovite garnet [Multiple purchase discounts available]

[3 stones remaining] 1 rough Russian uvarovite garnet [Multiple purchase discounts available]
Sold out Limited to 12 stones: 1 bicolor sapphire (slice) from Windsor, Tanzania. Discounts available for multiple purchases.

Limited to 12 stones: 1 bicolor sapphire (slice) from Windsor, Tanzania. Discounts available for multiple purchases.
Sold out ジェムガチャ『4月誕生石』💎ローズカットの蛍光ダイヤモンド1石《複数購入割引有》

Gem Gacha "April Birthstone"💎1 rose-cut fluorescent diamond

Sold out 《残り4石》ジェムガチャ💎ジンバブエ産ソーヤブルダイヤモンド1石（正八面体,VS~SIクラス相当） - カラッツSTORE

Gem Gacha💎1 Zimbabwe sawable diamond (regular octahedron, VS~SI class equivalent)

Sold out Gem Gacha💎1 Paraiba Tourmaline from Brazil (Batalha Mine)

Gem Gacha💎1 Paraiba Tourmaline from Brazil (Batalha Mine)

Sold out グリーンランド産ルビー 1石（ラウンドカット,2mm）

1 Ruby from Greenland (round cut, 2mm) with certificate

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