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誕生石一覧

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Sold out エメラルド 0.193ctルース - KARATZ STORE｜カラッツSTORE

Emerald 3.5mm/0.193ct loose

Sold out イエローダイヤモンド 0.055ctルース(FANCY DEEP ORANGY YELLOW, I1) - KARATZ STORE｜カラッツSTORE

Yellow diamond 0.055ct loose (FANCY DEEP ORANGY YELLOW, I1)

Sold out Pt900/K18PGピンクダイヤモンド0.048ct リング - KARATZ STORE｜カラッツSTORE

Pt900/K18PG pink diamond 0.048ct ring

Blue sapphire from Sri Lanka 1.62ct loose GIA

Sold out Pt950バイカラーサファイア0.255ct リング - KARATZ STORE｜カラッツSTORE

Pt950 bicolor sapphire 0.255ct ring

Sold out K18ホワイトオパール0.10 ct ペンダント（ネックレス） - KARATZ STORE｜カラッツSTORE

K18 white opal 0.10 ct pendant (necklace)

Sold out パパラチアサファイア 0.282ctルース 中宝鑑付 - KARATZ STORE｜カラッツSTORE

Padparadscha sapphire 0.282ct loose medium treasure appraisal

Sold out [Available at 10 PM on December 21st] Limited to 20 stones: Neon-colored Paraiba gacha containing Brazilian Paraiba tourmaline (CuO: 2.3%, MnO: 2.6%) [Multiple purchase discounts available]

[Available at 10 PM on December 21st] Limited to 20 stones: Neon-colored Paraiba gacha containing Brazilian Paraiba tourmaline (CuO: 2.3%, MnO: 2.6%) [Multiple purchase discounts available]
coming soon [12/14 22:00 Sale] Rainbow Garnet (Andradite Garnet) 6.7mm/1.488ct Loose Stone from Tenkawa Village, Nara Prefecture

[12/14 22:00 Sale] Rainbow Garnet (Andradite Garnet) 6.7mm/1.488ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥12,800
Sold out [On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 5.4mm/0.771ct Loose Stone from Tenkawa Village, Nara Prefecture

[On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 5.4mm/0.771ct Loose Stone from Tenkawa Village, Nara Prefecture
coming soon [12/13 22:00 Sale] Tanzanite from Tanzania 0.436ct Loose Stone

[12/13 22:00 Sale] Tanzanite from Tanzania 0.436ct Loose Stone Sale price¥8,800
coming soon [12/13 22:00 Sale] Tanzanite from Tanzania 0.467ct Loose Stone

[12/13 22:00 Sale] Tanzanite from Tanzania 0.467ct Loose Stone Sale price¥9,800
Sold out [12/7 22:00] Sri Lankan Yellow Sapphire 0.508ct Loose

[12/7 22:00] Sri Lankan Yellow Sapphire 0.508ct Loose
coming soon [12/14 22:00] Colombian Emerald Rough Stone 18.900ct (with Pyrite)

[12/14 22:00] Colombian Emerald Rough Stone 18.900ct (with Pyrite) Sale price¥25,800
Sold out White Diamond 6.2mm/0.988ct Loose (FANCY WHITE, I2)

White Diamond 6.2mm/0.988ct Loose (FANCY WHITE, I2)

coming soon [12/22 22:00] Mozambique Ruby 0.537ct Loose

[12/22 22:00] Mozambique Ruby 0.537ct Loose Sale price¥15,800
coming soon [12/22 22:00] Sri Lankan Blue Sapphire 0.645ct Loose

[12/22 22:00] Sri Lankan Blue Sapphire 0.645ct Loose Sale price¥25,800
coming soon [12/22 22:00] Sri Lankan Star Sapphire 12.679ct Loose

[12/22 22:00] Sri Lankan Star Sapphire 12.679ct Loose Sale price¥158,000
coming soon [12/22 22:00] Australian Black Opal 0.623ct Loose

[12/22 22:00] Australian Black Opal 0.623ct Loose Sale price¥15,800
coming soon [12/22 22:00] Brazilian Green Tourmaline 3.102ct Loose Stone

[12/22 22:00] Brazilian Green Tourmaline 3.102ct Loose Stone Sale price¥69,800
coming soon スリランカ産スターサファイア 5.066ctルース

[12/23 22:00] Sri Lankan Star Sapphire 5.066ct Loose Sale price¥69,800
coming soon オーストラリア産ブラックオパール 2.736ctルース

[12/23 22:00] Australian Black Opal 2.736ct Loose Sale price¥98,000
coming soon スリランカ産スターサファイア 3.821ctルース

[12/23 22:00] Sri Lankan Star Sapphire 3.821ct Loose Sale price¥79,800
coming soon メキシコ産ファイアオパール 1.283ctルース

[12/23 22:00] Mexican Fire Opal 1.283ct Loose Sale price¥29,800
coming soon メキシコ産ファイアオパール 1.413ctルース

[12/23 22:00] Mexican Fire Opal 1.413ct Loose Sale price¥39,800
coming soon オーストラリア産ホワイトオパール 4.170ctルース

[12/23 22:00] Australian White Opal 4.170ct Loose Sale price¥69,800
Sold out ミャンマー産トラピッチェルビー 0.179ct原石

Myanmar trapichel ruby ​​0.179ct rough stone
coming soon 【12545297掲載】スリランカ産マルチスターガーネット 4.209ctルース

[Posted in 12545297] Multi-star garnet from Sri Lanka 4.209ct loose Sale price¥98,000
Sold out モザンビーク産ピンクサファイア 0.213ctルース（ホットピンクサファイア）

Pink sapphire from Mozambique 0.213ct loose (hot pink sapphire)

Sold out ブラジル産バイカラートルマリン 1.554ctルース（トリカラートルマリン）

Brazilian bicolor tourmaline 1.554ct loose (tricolor tourmaline)

coming soon [12543545 published] Non-oil emerald 0.510ct loose

[12543545 published] Non-oil emerald 0.510ct loose Sale price¥498,000
Sold out ダイヤモンド 0.131ctルース(F, VS-1)

Diamond 0.131ct loose (F, VS-1, octagonal cut)

Sold out アメリカ産ペリドット 0.573ctルース（リリーパッドインクルージョン）

[On Sale 11/3 at 10 PM] American Peridot 0.573ct Loose Stone (Lily Pad Inclusions)

coming soon パキスタン産ペリドット 0.649ctルース

[11/2 22:00] Pakistani Peridot 0.649ct Loose Stone Sale price¥9,800
Sold out グレートルマリン 0.486ctルース 鑑別書

Grey Tourmaline 0.486ct Loose Stone with Certificate of Authenticity
coming soon [Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose

[Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose Sale price¥59,800
coming soon 【12552511掲載】ピンクダイヤモンド 0.296ctルース

[12552511] Pink diamond 0.296ct loose stone Sale price¥188,000
Sold out ブラジル産グリーントルマリン 0.490ctルース

Brazilian green tourmaline 0.490ct loose stone

Sold out タンザナイト 2.358ctルース

Tanzanite 2.358ct loose
coming soon ブラジル産パライバトルマリン 0.065ctルース （CuO:2.0%、MnO:2.6%）

Brazilian Paraiba tourmaline 0.065ct loose (CuO:2.0%, MnO:2.6%) Sale price¥22,800
Sold out ロシア産デマントイドガーネット（ホーステール認む） 4.2mm/0.319ctルース

Russian demantoid garnet (horsetail recognized) 4.2mm/0.319ct loose

coming soon イエローダイヤモンド2.6mmルース（VSクラス相当）

Yellow diamond 2.6mm loose (equivalent to VS class) Sale price¥12,800
Sold out カシミール産非加熱サファイア 0.200ctルース

Unheated Kashmir Sapphire 3.5mm/0.200ct Loose GIA

Sold out カシミール産非加熱サファイア 0.080ctルース

Unheated Kashmir Sapphire 2.3mm/0.080ct Loose GIA

Sold out ドミニカ共和国産コンクパール（火焔模様有り） 0.213ctルース

Dominican Republic Conch Pearl (with flame pattern) 0.213ct Loose

Sold out ホワイトサファイア 0.537ctルース

White sapphire 0.537ct loose
Sold out ホワイトサファイア 4.3mm/0.382ctルース

Sri Lankan White Sapphire 4.3mm/0.382ct Loose
Sold out ブラジル産レインボーアクアマリン 1.309ctルース

Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.309ct Loose Stone

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.