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

Ametrine 1 stone (approximately 40~50ct)

Sold out Limited to 10 stones: 1 London blue diamond loose (VS-SI class equivalent, 1.8mm) Multiple purchase discounts available

Limited to 10 stones: 1 London blue diamond loose (VS-SI class equivalent, 1.8mm) Multiple purchase discounts available
Sold out Brazilian London Blue Topaz 1 Stone Loose (6mm, Round Cut) {Multiple Purchase Discounts Available}

Brazilian London Blue Topaz 1 Stone Loose (6mm, Round Cut) {Multiple Purchase Discounts Available}
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

Sold out 1 stone peridot (pyramid cut, 5mm)《Multiple purchase discount available》

1 stone peridot (pyramid cut, 5mm)《Multiple purchase discount available》

Sold out [On sale September 14th at 10 PM] {Only one left} Blue Sapphire Gacha includes two unheated royal blue sapphires (with AIGS certificate) (plus one Teppanawa Mine sapphire) {Multiple purchase discounts available}

[On sale September 14th at 10 PM] {Only one left} Blue Sapphire Gacha includes two unheated royal blue sapphires (with AIGS certificate) (plus one Teppanawa Mine sapphire) {Multiple purchase discounts available}
Sold out [Available at 10 PM on September 7th] Limited Quantity Gem Gacha 💎 Win 1 or 2 gems, including pink diamonds and 46ct cantera opals. Discounts available for multiple purchases.

[Available at 10 PM on September 7th] Limited Quantity Gem Gacha 💎 Win 1 or 2 gems, including pink diamonds and 46ct cantera opals. Discounts available for multiple purchases.
Sold out [Available at 10 PM on August 23rd] [Limited to 8 stones] Brazilian Rainbow Aquamarine Loose Stone (Pear Shape) [Multiple purchase discounts available]

[Available at 10 PM on August 23rd] [Limited to 8 stones] Brazilian Rainbow Aquamarine Loose Stone (Pear Shape) [Multiple purchase discounts available]
Sold out [On sale from 10pm on 5/5] Limited to 11 stones Russian Demantoid Garnet (2-2.3mm, round cut, with horsetail) 1 stone [Multiple purchase discounts available]

[On sale from 10pm on 5/5] Limited to 11 stones Russian Demantoid Garnet (2-2.3mm, round cut, with horsetail) 1 stone [Multiple purchase discounts available]
Sold out 《9石限定》ジェムガチャ『春色カラー』💎バイカラートルマリン1石 - カラッツSTORE

Gem Gacha "Spring Colors" 💎 1 Bicolor Tourmaline (Multiple Purchase Discounts Available)

Sold out Brazilian Paraiba tourmaline (Batalha) 1 stone 1.3-1.4mm

Brazilian Paraiba tourmaline (Batalha) 1 stone 1.3-1.4mm

Sold out Rhodolite garnet (octagonal cut) 1ct 1 stone

Rhodolite garnet (octagonal cut) 1ct 1 stone

Sold out Brazilian Rainbow Aquamarine (Iridescent Aquamarine) Loose Stone (Heart Shape) (Multiple Purchase Discounts Available)

Brazilian Rainbow Aquamarine (Iridescent Aquamarine) Loose Stone (Heart Shape) (Multiple Purchase Discounts Available)
Sold out Lab-grown pink diamond (2mm, synthetic pink diamond, about Fancy Light Pink) 1 stone loose (multiple purchase discount available)

Lab-grown pink diamond (2mm, synthetic pink diamond, about Fancy Light Pink) 1 stone loose (multiple purchase discount available)
Sold out Sky blue topaz 1 stone (10mm, flower cut)《Discount available for multiple purchases》

Sky blue topaz 1 stone (10mm, flower cut)《Discount available for multiple purchases》

Sold out [Available at 10 PM on August 10th] Brazilian Rainbow Aquamarine Loose Stone (Iridescent Aquamarine) {Multiple Purchase Discounts Available}

[Available at 10 PM on August 10th] Brazilian Rainbow Aquamarine Loose Stone (Iridescent Aquamarine) {Multiple Purchase Discounts Available}
Sold out [Available at 10 PM on August 13th] [Limited to 9 stones] One loose Brazilian rainbow aquamarine (oval cut, average 0.8 carats) [Multiple purchase discounts available]

[Available at 10 PM on August 13th] [Limited to 9 stones] One loose Brazilian rainbow aquamarine (oval cut, average 0.8 carats) [Multiple purchase discounts available]
Sold out Limited to 9 stones Gem gacha💎 April birthstone gacha: A gacha where you can win a fan-cut diamond with AGT sorting or a morganite. Multiple purchase discounts available.

Limited to 9 stones Gem gacha💎 April birthstone gacha: A gacha where you can win a fan-cut diamond with AGT sorting or a morganite. Multiple purchase discounts available.
Sold out Brazilian unheated Imperial Topaz 1 stone loose stone {Multiple purchase discount available}

Brazilian unheated Imperial Topaz 1 stone loose stone {Multiple purchase discount available}
Sold out Lab-grown pink diamond (2mm, synthetic pink diamond, about Fancy Vivid Pink) 1 stone loose (multiple purchase discount available)

Lab-grown pink diamond (2mm, synthetic pink diamond, about Fancy Vivid Pink) 1 stone loose (multiple purchase discount available)
Sold out Diamond gacha💎Fancy cut brown diamonds and FancyDarkBrown diamonds (with medium treasure chest)《Multiple purchase discount available》

Diamond gacha💎Fancy cut brown diamonds and FancyDarkBrown diamonds (with medium treasure chest)《Multiple purchase discount available》

Sold out 1 rose cut diamond (VS-SI class equivalent, 3.0mm)《Multiple purchase discount available》

1 rose cut diamond (VS-SI class equivalent, 3.0mm)《Multiple purchase discount available》

Sold out 【猫カット】シトリン（8mm） - カラッツSTORE

[Cat cut] Citrine (8mm)

Sold out バロックオパール 2石 - KARATZ STORE｜カラッツSTORE

Baroque Opal 2 stones《Discount available for multiple purchases》

Sold out [Available at 10 PM on September 6th] Limited to 10 Blue Stones Gacha (Paraiba Tourmaline, Cobalt Garnite, Indigo Tourmaline with Certificate of Authenticity, Zimbabwean Euclase with Certificate of Authenticity) [Multiple Purchase Discounts Available]

[Available at 10 PM on September 6th] Limited to 10 Blue Stones Gacha (Paraiba Tourmaline, Cobalt Garnite, Indigo Tourmaline with Certificate of Authenticity, Zimbabwean Euclase with Certificate of Authenticity) [Multiple Purchase Discounts Available]
Sold out [Limited to 8 stones] Jam Gacha💎 1 Rainbow Garnet stone (January birthstone) from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]

[Limited to 8 stones] Jam Gacha💎 1 Rainbow Garnet stone (January birthstone) from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]
Sold out Gem Gacha💎 1 Paraiba Tourmaline from Brazil (Batalha mine, 2.5-3.0mm, includes blue)

Gem Gacha💎 1 Paraiba Tourmaline from Brazil (Batalha mine, 2.5-3.0mm, includes blue)
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 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 Swiss blue topaz 1 stone (9.5 x 8mm, special cut)《Multiple purchase discount available》

Swiss blue topaz 1 stone (9.5 x 8mm, special cut)《Multiple purchase discount available》

Sold out Swiss Blue Topaz 1 stone (10 x 8mm, special cut)《Discount available for multiple purchases》

Swiss Blue Topaz 1 stone (10 x 8mm, special cut)《Discount available for multiple purchases》

Sold out [Available at 10 PM on August 31st] [Limited to 9 stones] Brazilian Rainbow Aquamarine Loose Stone (Average 1.0 carat, Pear Sheep Cut) [Multiple purchase discounts available]

[Available at 10 PM on August 31st] [Limited to 9 stones] Brazilian Rainbow Aquamarine Loose Stone (Average 1.0 carat, Pear Sheep Cut) [Multiple purchase discounts available]
Sold out 《Only a few left》 Brazilian Paraiba Tourmaline (Batalia) Gacha💎1.2mm 1 out of 10 stones contains Cu&Mn (CuO:2.1%, MnO:0.9%/CuO:1.6%, MnO:1.5%) 《Multiple purchase discounts available》

《Only a few left》 Brazilian Paraiba Tourmaline (Batalia) Gacha💎1.2mm 1 out of 10 stones contains Cu&Mn (CuO:2.1%, MnO:0.9%/CuO:1.6%, MnO:1.5%) 《Multiple purchase discounts available》
Sold out [Limited to 7 stones] Gem gacha💎 Australian opal or Mexican cantera opal 1 loose stone (with defects) [Multiple purchase discount available]

[Limited to 7 stones] Gem gacha💎 Australian opal or Mexican cantera opal 1 loose stone (with defects) [Multiple purchase discount available]
Sold out Limited to 5 stones: 1 Mexican Hyalite Opal loose stone (average 0.5ct) Multiple purchase discounts available

Limited to 5 stones: 1 Mexican Hyalite Opal loose stone (average 0.5ct) Multiple purchase discounts available
Sold out Limited to 9 stones: 1 London Blue Diamond Loose (VS-SI class equivalent, 2.0mm) Multiple purchase discounts available

Limited to 9 stones: 1 London Blue Diamond Loose (VS-SI class equivalent, 2.0mm) Multiple purchase discounts available
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 Fire Opal (Common Opal) 2 stone set《Discount available for multiple purchases》

Fire Opal (Common Opal) 2 stone set《Discount available for multiple purchases》

Sold out [Available at 10 PM on September 21st] Rainbow Garnet (Rose Cut, 3.0-5.5mm) Loose Stone from Tenkawa Village, Nara Prefecture (Multiple Purchase Discounts Available)

[Available at 10 PM on September 21st] Rainbow Garnet (Rose Cut, 3.0-5.5mm) Loose Stone from Tenkawa Village, Nara Prefecture (Multiple Purchase Discounts Available)
Sold out [Sold at 10 PM on September 5th] Single loose Russian oil-free emerald (2.2mm, round cut) {Multiple purchase discounts available}

[Sold at 10 PM on September 5th] Single loose Russian oil-free emerald (2.2mm, round cut) {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 グリーンランド産アイスルビー 1石（ハートシェイプ,4mm）

Ice ruby ​​from Greenland 1 stone (heart shape, 4mm) Comes with original pouch

Sold out アメジスト（12ctUP,チェッカーボード×トリリアント） - KARATZ STORE｜カラッツSTORE

Amethyst (12ctUP, checkerboard x trilliant, February birthstone)《Multiple purchase discount available》

Sold out [On Sale 10/7 at 10 PM] [Cat Cut] Brazilian Goethite-in-Amethyst 0.561ct Loose Stone

[On Sale 10/7 at 10 PM] [Cat Cut] Brazilian Goethite-in-Amethyst 0.561ct Loose Stone
Sold out Limited quantity: Brazilian Paraiba tourmaline, 1 stone loose (Batalha mine, oval cut) Multiple purchase discounts available

Limited quantity: Brazilian Paraiba tourmaline, 1 stone loose (Batalha mine, oval cut) Multiple purchase discounts available
Sold out Limited to 2 stones: 1 Australian opal loose stone (pear cut) Multiple purchase discounts available

Limited to 2 stones: 1 Australian opal loose stone (pear cut) Multiple purchase discounts 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.