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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 スコロライト1石ルース（8mm,コンケーブカット）《複数購入割引有》

Scorolite 1 stone loose (8mm, concave cut)《Multiple purchase discount available》
Sold out Dragon Garnet 2-Stone Set (2.0mm, Round Cut) "Multiple Purchase Discount Available"

Dragon Garnet 2-Stone Set (2.0mm, Round Cut) "Multiple Purchase Discount Available"
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） 2.623ctルース

Rainbow garnet (andradite garnet) 2.623ct loose from Tenkawa Village, Nara Prefecture

Sold out Russian demantoid garnet (2mm, round cut) 1 stone (discount available for multiple purchases)

Russian demantoid garnet (2mm, round cut) 1 stone (discount available for multiple purchases)

Sold out [#May2026Campaign, #May2026GachaUse] Malachite 2-Stone Set Loose (6x8mm, Pear Cut) - Multiple Purchase Discount Available

[#May2026Campaign, #May2026GachaUse] Malachite 2-Stone Set Loose (6x8mm, Pear Cut) - Multiple Purchase Discount Available

Sold out Malachite 2 stone set loose (6mm, cushion cut)《Discount available for multiple purchases》

Malachite 2 stone set loose (6mm, cushion cut)《Discount available for multiple purchases》

Sold out カラーチェンジサファイア 0.351ctルース

Color change sapphire 0.351ct loose

Sold out ブラジル産レピドクロサイトインクォーツ 2.225ctルース

Brazilian lepidocrocite in quartz 2.225ct loose

Sold out ブラジル産レピドクロサイトインクォーツ 1.621ctルース

Brazilian lepidocrocite in quartz 1.621ct loose

Sold out 1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》

1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》
Sold out パキスタン産オイルインクォーツ 0.629ct原石（双子・気泡が動くタイプ）

Oil-in-quartz 0.629ct rough stone from Pakistan (twins, moving bubble type)

Sold out デンドリティックアゲート 4.437ctルース

Dendritic Agate 4.437ct loose

Sold out 【5/20 22時販売】ユーパーライト 1石 （平均35ct）原石《複数購入割引有》 - カラッツSTORE

Euparite 1 stone (average 35ct) raw stone (discount available for multiple purchases)

Sold out 【5/20 22時販売】ユーパーライト 1石 （平均28ct）原石《複数購入割引有》 - カラッツSTORE

[#May2026Campaign, #May2026Gacha] Yooperlite 1 stone, approx. 20-25ct (Michigan, USA) "Multiple Purchase Discount"
Sold out Madeira Citrine 1 stone 💎5mm-6mm (Madeira Citrine)《November birthstone》《Multiple purchase discount available》

Madeira Citrine 1 stone 💎5mm-6mm (Madeira Citrine)《November birthstone》《Multiple purchase discount available》

Sold out アイスブルーカラーの合成モアッサナイト1石ルース（5mm,アイスブルー）

Ice blue color synthetic moissanite 1 stone loose (5mm, ice blue)《Multiple purchase discount available》

Sold out 1 Brazilian Euclase rough stone (discount available for multiple purchases)

1 Brazilian Euclase rough stone (discount available for multiple purchases)

Sold out Limited to 9 stones: 1 loose Mexican opal stone (multiple purchase discounts available)

Limited to 9 stones: 1 loose Mexican opal stone (multiple purchase discounts available)

Sold out Gem Gacha💎 Cat Set (1 gemstone + 2 sapphires) {Multiple purchase discounts available}

Gem Gacha💎 Cat Set (1 gemstone + 2 sapphires) {Multiple purchase discounts available}

Sold out Yuichiro Abe goods set [clutch bag & acrylic key chain]

Yuichiro Abe goods set [clutch bag & acrylic key chain]

Sold out Christmas Sale: Only one pink item available! Yuichiro Abe Goods Set [Tote Bag & Coaster]

Christmas Sale: Only one pink item available! Yuichiro Abe Goods Set [Tote Bag & Coaster]

Sold out Christmas Sale: S: 3 pieces / M: 1 piece / Kids: 1 piece - Yuichiro Abe Goods Set [T-shirt & Coaster]

Christmas Sale: S: 3 pieces / M: 1 piece / Kids: 1 piece - Yuichiro Abe Goods Set [T-shirt & Coaster]

Sold out Yuichiro Abe goods set [sticker & waterproof smartphone case]

Yuichiro Abe goods set [sticker & waterproof smartphone case]

Sold out Yuichiro Abe goods set [gadget case & compact mirror]

Yuichiro Abe goods set [gadget case & compact mirror]

Sold out Rose cut diamond 1.2mm x 1 stone (VS-SI class, DH color, melee diamonds) {Multiple purchase discounts available}

Rose cut diamond 1.2mm x 1 stone (VS-SI class, DH color, melee diamonds) {Multiple purchase discounts available}
Sold out Yuichiro Abe Goods Set [Mug & Compact Mirror]

Yuichiro Abe Goods Set [Mug & Compact Mirror]

Sold out 1 stone of Hokkaido rhodochrosite (5 x 3 mm, pear-shaped cut)《Discount available for multiple purchases》

1 stone of Hokkaido rhodochrosite (5 x 3 mm, pear-shaped cut)《Discount available for multiple purchases》

Sold out ライモナイトインクォーツ（オーロラクォーツ） 1石 ルース

Lymonite in Quartz (Aurora Quartz) 1 stone loose

Sold out オパール0.584ctルース

Opal 0.584ct loose

Sold out バンカチャサファイア（スターサファイア） 0.720ctルース

Bancacha sapphire (star sapphire) 0.720ct loose

Sold out 宝石研磨に挑戦してみよう「自分で出来る原石磨きセット」（中級者向け：プレーナイト・葡萄石）

Let's try jewelry polishing "Do-it-yourself rough stone polishing set" (for intermediate users: playnite/grape stone)

Sold out アンダリュサイト 1石（ラウンドカット）

Andalusite 1 stone (round cut, 3.0-3.5mm)《Multiple purchase discount available》

Sold out アメジスト・シトリン 4mm（エピコットカット） 2石セット

Amethyst/Citrine 4mm (Epicot cut) 2 stone set《Multiple purchase discount available》

Sold out 宝石研磨に挑戦してみよう「自分で出来る原石磨きセット」（初心者向け：ネオンブルーアパタイト）

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for beginners: neon blue apatite)

Sold out Let's try the gem mining experience "Do-it-yourself gem excavation experience set" 《7 types of gems》

Let's try the gem mining experience "Do-it-yourself gem excavation experience set" 《7 types of gems》

Sold out 化石採掘体験に挑戦してみよう「自分で出来る化石発掘体験セット」

Let's try the fossil mining experience "Do-it-yourself fossil excavation experience set" + bonus of fossil stickers, simple black light, and amber (copal) [Multiple purchase discounts available]

Sold out Rose cut apatite 1 stone 3mm《Multiple purchase discount available》

Rose cut apatite 1 stone 3mm《Multiple purchase discount available》

Sold out ブラックダイヤモンド 3.7mm/0.200ctルース（ローズカット）

Black diamond 3.7mm/0.200ct loose (rose cut)

Sold out Let's try polishing gemstones with the "Do-it-yourself gemstone polishing kit" (for intermediate users: Illusion Sunstone)

Let's try polishing gemstones with the "Do-it-yourself gemstone polishing kit" (for intermediate users: Illusion Sunstone)
Sold out 1 green opal from Amazon《Discount available for multiple purchases》

1 green opal from Amazon《Discount available for multiple purchases》

Sold out ローズクォーツ1石ルース（バフトップ,10×8mm or 12×10mm）

Rose quartz 1 stone loose (buff top, 10×8mm or 12×10mm)《Multiple purchase discount available》

Sold out ピンクアメジスト1石（チェッカーボードカット,約10ct,14×14mm）

1 stone pink amethyst (checkerboard cut, approx. 10ct, 14 x 14mm)《Discount available for multiple purchases》

Sold out 【宝石商の道具】ダイヤルゲージ （ルースやビーズの計測）・ルース（ピラミッドカット）セット

[Jeweler's Tools] Dial Gauge (Measuring Loose and Beads) Loose (Pyramid Cut) Set

Sold out 北海道産ロードクロサイト1石ルース（6×4,オーバル）

1 stone loose rhodochrosite from Hokkaido (6×4, oval)

Sold out 宝石研磨に挑戦してみよう「自分で出来る原石磨きセット」（中級者向け：ラブラドライト）

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for intermediate users: labradorite)

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》

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.