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Sold out Gem Gacha💎1 special fluorescent diamond (VS-SI class equivalent, 2.0mm)

Gem Gacha💎1 special fluorescent diamond (VS-SI class equivalent, 2.0mm)

Sold out バイカラートルマリン＆バイカラーフローライト 2石セット

Bicolor tourmaline & bicolor fluorite 2 stone set

Sold out 【KEN氏】ピクセルカットのトルマリン1石 - カラッツSTORE

[Mr. KEN] 1 pixel-cut tourmaline stone (discount available for multiple purchases)

Sold out 1 stone tanzanite (rose cut, 4mm)

1 stone tanzanite (rose cut, 4mm)

Sold out Black diamond 3.0mm loose (rose cut)《April birthstone》 1 stone

Black diamond 3.0mm loose (rose cut)《April birthstone》 1 stone

Sold out カラーチェンジサファイア 1石 - KARATZ STORE｜カラッツSTORE

Color change sapphire 1 stone

Sold out ロードライトガーネット 1点（5×7mm,オーバルカット） - KARATZ STORE｜カラッツSTORE

Rhodolite garnet 1 piece (5 x 7mm, oval cut)

Sold out Limited to 5 stones: 1 Veracruz amethyst rough stone (from Mexico, February birthstone) Multiple purchase discount

Limited to 5 stones: 1 Veracruz amethyst rough stone (from Mexico, February birthstone) Multiple purchase discount
Sold out Limited to 5 stones: 1 loose lapis lazuli stone from Afghanistan (December birthstone) Discounts available for multiple purchases

Limited to 5 stones: 1 loose lapis lazuli stone from Afghanistan (December birthstone) Discounts available for multiple purchases
Sold out 《Only one left》1 Mexican opal loose stone (fire opal, water opal, small size)《Multiple purchase discounts available》《For beginners》

《Only one left》1 Mexican opal loose stone (fire opal, water opal, small size)《Multiple purchase discounts available》《For beginners》
Sold out ブラジル産サンタマリアアクアマリン 0.166ctルース

Brazilian Santa Maria Aquamarine 3.4mm/0.166ct loose stone
Sold out 【さくらインカット】アルマンディンガーネット6mmルース ワッペン付 - カラッツSTORE

[Limited 5 stones] [Sakura in-cut] Almandine garnet 6mm loose with patch

Sold out Limited to 8 stones Tsavorite + Emerald Loose 2 stone set Multiple purchase discounts available Multiple purchase discounts available

Limited to 8 stones Tsavorite + Emerald Loose 2 stone set Multiple purchase discounts available Multiple purchase discounts available
Sold out モンタナサファイア1石ルース（約4×3mm,ペアシェイプ）《複数購入割引有》

[Limited to 26 stones] 1 loose Montana sapphire stone (approx. 4 x 3 mm, pear shape) [Discount available for multiple purchases]
Sold out Lab-grown pink diamond (2mm, synthetic pink diamond, about Fancy Intense Pink) 1 stone loose (multiple purchase discount available)

Lab-grown pink diamond (2mm, synthetic pink diamond, about Fancy Intense Pink) 1 stone loose (multiple purchase discount available)
Sold out Paraiba tourmaline from Brazil (Batalha mine, 2.0 x 1.5mm)《Multiple purchase discount available》

Paraiba tourmaline from Brazil (Batalha mine, 2.0 x 1.5mm)《Multiple purchase discount available》

Sold out Colombian emerald + Brazilian alexandrite (Hemachita mine) 2 stone set《Multiple purchase discount available》

Colombian emerald + Brazilian alexandrite (Hemachita mine) 2 stone set《Multiple purchase discount available》

Sold out [For Beginners] Set of 2 Andesine Labradorite (Rainbow Moonstone) from Madagascar

[For Beginners] Set of 2 Andesine Labradorite (Rainbow Moonstone) from Madagascar

Sold out ゲーサイトインアメジスト1石ルース《複数購入割引有》

《Limited to 7 stones》Gesite in Amethyst 1 stone loose《Multiple purchase discount available》

Sold out エチオピア産オパール 1石（ラウンドカット,2.5mm）《複数購入割引有》

1 Ethiopian opal (round cut, 2.5mm)《Discount available for multiple purchases》

Sold out ホワイトトパーズ1石ルース（6mm,ラウンドカット,11月誕生石）《複数購入割引有》

White Topaz 1 stone loose (6mm, round cut, November birthstone)《Discount available for multiple purchases》

Sold out YAG（イットリウムアルミニウムガーネット）1石（ブルーグレー,6×4mm,ペアシェイプ）《複数購入割引有》

YAG (yttrium aluminum garnet) 1 stone (blue gray, 6 x 4 mm, pear shape)

Sold out Ice blue sapphire & pink sapphire 2 stone set from Ratnapura, Sri Lanka (2.5mm, princess cut)《Multiple purchase discount available》

Ice blue sapphire & pink sapphire 2 stone set from Ratnapura, Sri Lanka (2.5mm, princess cut)《Multiple purchase discount available》

Sold out Gem Gacha💎Sapphire from Ratnapura, Sri Lanka (4.5mm-6.0mm, round cut)《Multiple purchase discounts available》

Gem Gacha💎Sapphire from Ratnapura, Sri Lanka (4.5mm-6.0mm, round cut)《Multiple purchase discounts available》

Sold out スリランカ産バイカラーサファイア1石 （カボションカット）

1 bicolor sapphire from Sri Lanka (cabochon cut)《Discount available for multiple purchases》

Sold out 「アヒマディ博士の宝石学」（サイン入り）＆合成ダイヤモンドと天然ダイヤモンド（H&C）＆H&Cスコープ3点セット - カラッツSTORE

"Dr. Ahimadi's Gemology" (signed) & Synthetic Diamonds and Natural Diamonds (H&C) & H&C Scope 3 Piece Set

Sold out 【猫カット】ムーンストーン（8mm） - カラッツSTORE

[Cat cut] Moonstone (8mm)《Multiple purchase discount available》

Sold out Black Tourmaline in Quartz 1 stone《Multiple purchase discount available》

Black Tourmaline in Quartz 1 stone《Multiple purchase discount available》

Sold out トルマリン2石（オクタゴナルカット,八角形） - KARATZ STORE｜カラッツSTORE

2 tourmaline stones (octagonal cut, octagonal)《Multiple purchase discount available》

Sold out [On sale from 10pm on November 3rd] {Limited to 4 stones} Blue sapphire from Madagascar (royal blue color, oval cut) {Multiple purchase discounts available}

[On sale from 10pm on November 3rd] {Limited to 4 stones} Blue sapphire from Madagascar (royal blue color, oval cut) {Multiple purchase discounts available}
Sold out {Only one left} 1 Sea Creature Gacha (Agate, Australian Opal) {Multiple purchase discounts available}

{Only one left} 1 Sea Creature Gacha (Agate, Australian Opal) {Multiple purchase discounts available}
Sold out [Limited to 6 stones] Sapphire Gacha💎 Tanzanian bicolor sapphire (including crescent sapphire, 3-4mm) [Multiple purchase discount available]

[Limited to 6 stones] Sapphire Gacha💎 Tanzanian bicolor sapphire (including crescent sapphire, 3-4mm) [Multiple purchase discount available]
Sold out Limited to 5 stones: 1 loose Brazilian pink imperial topaz stone. Discounts available for multiple purchases.

Limited to 5 stones: 1 loose Brazilian pink imperial topaz stone. Discounts available for multiple purchases.

Sold out Sapphire Gacha💎 Montana sapphire 1 loose stone (green-blue, 3×4mm) {Multiple purchase discounts available}

Sapphire Gacha💎 Montana sapphire 1 loose stone (green-blue, 3×4mm) {Multiple purchase discounts available}
Sold out Limited to 4 stones: 1 aventurine aquamarine loose stone (March birthstone, for beginners) Multiple purchase discounts available

Limited to 4 stones: 1 aventurine aquamarine loose stone (March birthstone, for beginners) Multiple purchase discounts available
Sold out 《限定10石》サファイア1石ルース（ヘキサゴナルカット,3mm）《複数購入割引有》

Hexagonal cut sapphire, 1 loose stone (3mm) {Multiple purchase discounts available}
Sold out ミントグリーンダイヤモンド1石ルース（トリリアントカット,SIクラス相当）《複数購入割引有》

[Limited to 9 stones] 1 mint green diamond loose (trilliant cut, SI class equivalent) [Multiple purchase discount available]
Sold out 1 bicolor sapphire (cabochon cut)《Multiple purchase discount》

1 bicolor sapphire (cabochon cut)《Multiple purchase discount》

Sold out 1 stone mint garnet from Tanzania (pear shape cut)《Discount available for multiple purchases》

1 stone mint garnet from Tanzania (pear shape cut)《Discount available for multiple purchases》
Sold out Set of 2 stones: 1 YAG (yttrium aluminum garnet) stone (canary yellow, emerald cut) + 1 yellow sapphire rough stone (discount available for multiple purchases)

Set of 2 stones: 1 YAG (yttrium aluminum garnet) stone (canary yellow, emerald cut) + 1 yellow sapphire rough stone (discount available for multiple purchases)
Sold out 《Limited to 7 stones》《For beginners》1 stone Bekily Blue Garnet from Madagascar (2.6-2.8mm)《Multiple purchase discount available》

《Limited to 7 stones》《For beginners》1 stone Bekily Blue Garnet from Madagascar (2.6-2.8mm)《Multiple purchase discount available》

Sold out ダイヤガチャ💎ピンクダイヤモンド1石【全てFancy Purple Pink】（約2mm、全品ソーティング付)《複数購入割引有》

Diamond Gacha💎1 pink diamond [all Fancy Purple Pink] (approx. 2mm, all items sorted)《Multiple purchase discount available》

Sold out 1 bicolor sapphire from Windsor, Tanzania, loose (round cut)《Discount available for multiple purchases》

1 bicolor sapphire from Windsor, Tanzania, loose (round cut)《Discount available for multiple purchases》

Sold out Ametrine 1 stone (Intaglio)《Multiple purchase discount available》

Ametrine 1 stone (Intaglio)《Multiple purchase discount available》

Sold out Diamond gacha💎Super rose cut diamond 1 stone loose《Multiple purchase discount available》

Diamond gacha💎Super rose cut diamond 1 stone loose《Multiple purchase discount available》
Sold out アメトリン 1石 ルース（約5ct）《初心者向け》

Ametrine 1 stone loose (approx. 5ct)《For beginners》

Sold out ミントグリーンダイヤモンド（トリートメント,Iクラス相当）1石

1 mint green diamond (treatment, equivalent to I class)

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