5 major gems

《再入荷》【宝石商の道具】ゲルタックケース3個セット《透明・黒背景の2種類有》（ブルーサファイア3石付） - カラッツSTORE

[Jeweler's Tools] Set of 3 gel tack cases (2 types: transparent and black background) (includes 3 blue sapphires) (discount available for multiple purchases) Sale price¥3,980

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[Resale due to popular demand] "Encyclopedia of gemstones that understand the origin" & 2 sapphire stone set (purchased in Chanthaburi, Thailand)

[Resale] [Jeweler's Tools] Black Light, 3 Loose Stones (Ruby, Red Spinel, Oil in Quartz) with Rechargeable Battery Sale price¥6,980

H&C（ハート&キューピッド）専用スコープ（ダイヤモンド専用スコープ) - カラッツSTORE

[Resale] [Jeweler's Tools] H&C (Heart & Cupid) Scope (Diamond Scope) Sale price¥1,580

Ice blue diamond 1.2mm or 2.0mm 1 stone (VS class equivalent, round cut) {Multiple purchase discount available} Sale priceFrom ¥4,980

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【大人用】宝石磨きに挑戦してみよう「自分で出来る原石磨きセット」（初心者向け：バイカラーフローライト）・ボルダーオパール付※原石磨きコンテスト対象 ※

[For adults] Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for beginners: bicolor fluorite) with boulder opal Subject to the rough stone polishing contest

【一律1000円】アメリカ産・ハーキマーダイヤモンド（ロッククリスタル）1石原石

[Flat rate 1000 yen] 1 American Herkimer diamond (rock crystal) rough stone (discount available for multiple purchases) Sale price¥1,000

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{3/31 Reception ends} "PSYCHO-PASS" x KARATZ collaboration jewelry Public Safety Bureau Criminal Investigation Division Device Image Ring, Inspector Design [Tsunemori Akane Model] {Pink Diamond}

Diamond 2mm (VS class, DG color, round cut, melee diamond 2.0mm) 1 loose stone {Multiple purchase discounts available} Sale price¥5,580

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Gem Gacha💎Mexican Cantera Opal《Multiple Purchase Discount》

H&C (Hearts & Cupids) Diamond 2.0mm Loose (VS Class, DG Class, 2mm Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥7,980

1 beryllium diffused sapphire stone (approximately 2.5mm, round cut)《Multiple purchase discounts available》 Sale price¥1,580

Lab-grown diamond (synthetic diamond)《HPHT method》1 stone loose《Multiple purchase discount available》 Sale priceFrom ¥2,980

Rose cut diamond 1.2mm x 1 stone (VS-SI class, DH color, melee diamonds) {Multiple purchase discounts available} Sale price¥2,980

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

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【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》

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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》

Gem Gacha💎 Cat Set (1 gemstone + 2 sapphires) {Multiple purchase discounts available} Sale price¥3,333

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「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)

H&C(ハート&キューピッド)ダイヤモンド1.2mmルース - カラッツSTORE

H&C (Hearts & Cupids) Diamond 1.2mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥3,980

ピンクオパール・ブルーオパール2石セット（小・大サイズ） - KARATZ STORE｜カラッツSTORE

Pink opal/blue opal 2 stone set (small/large size)《Discount available for multiple purchases》 Sale priceFrom ¥1,980

Ethiopian opal 1 stone (oval cut, 3 x 4 mm) loose (discount available for multiple purchases) Sale price¥1,980

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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》

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1 star flower cut beryllium diffused sapphire (September birthstone)

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

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

Diamond 1.2mm (VS class, DG color, round cut, melee diamond) 1 loose stone {Multiple purchase discounts available} Sale price¥1,980

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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)

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

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1 Trapiche diamond (some fluorescent green)

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

1 American Herkimer Diamond (rock crystal) 💎 (child-bearing type)《Multiple purchase discount available》 Sale price¥2,980

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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]

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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)

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Colombian trapiche emerald (reverse trapiche)

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

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【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)

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{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}

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

1 Ruby from Greenland (round cut, 1.2mm)《Discount available for multiple purchases》 Sale price¥2,280

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

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

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

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

Gem Gacha💎 Sri Lankan Sapphire《Ratnapura》1 loose stone (average 0.75ct)《Multiple purchase discount available》 Sale price¥5,980

Green Diamond (Treatment) 1 stone (approx. 1.3mm)《Multiple purchase discount available》 Sale price¥3,580

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

Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available} Sale price¥1,580

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