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5 major gems

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スリランカ産ホワイトサファイア 2.9mm/0.086ctルース（ローズカット）

Sri Lankan white sapphire 2.9mm/0.086ct loose (rose cut) Sale price¥3,980
コロンビア産エメラルドキャッツアイ 0.190ctルース

Colombian emerald cat's eye 0.190ct loose Sale price¥15,800
ピンクダイヤモンド 0.051ctルース(FANCY LIGHT PINK, SI-2)

[Posted 32501454] Pink Diamond 0.051ct Loose (FANCY LIGHT PINK, SI-2) Sale price¥39,800
ロイヤルブルーサファイア 1.44ctルース GIA

Royal blue sapphire 1.44ct loose GIA Sale price¥188,000
メキシコ産ファイアオパール 1.270ctルース

[Camellia cut] Mexican fire opal 1.270ct loose with patch Sale price¥98,000
モゴック産バイカラーピンクスターサファイア 0.360ctルース

Bicolor pink star sapphire from Mogok 0.360ct loose Sale price¥24,800
Pt950ベニトアイト0.10ct・アクアマリン・ブルーダイヤモンドリング - カラッツSTORE

Pt950 Benitoite 0.10ct Aquamarine Blue Diamond Ring Sale price¥89,800
非加熱ブルーサファイア 0.862ctルース

[12549429] Blue sapphire 0.862ct loose stone Sale price¥25,800
コロンビア産トラピッチェエメラルド 1.448ctルース

[On Sale at 10 PM on September 22nd] Colombian Trapiche Emerald 1.448ct Loose Sale price¥69,800
南アフリカ産ダイヤモンド原石（ソーヤブル） 0.105ct原石

[On Sale at 10 PM on September 21st] South African Rough Diamond (Sawable) 0.105ct Rough Stone (with Trigon) Sale price¥39,800
ブルーサファイア 0.332ctルース

[On Sale at 10 PM on October 4th] Blue Sapphire 4.1mm/0.332ct Loose Sale price¥25,800
ブルーサファイア 0.291ctルース

[On sale at 10pm on September 30th] Blue sapphire 0.291ct loose stone Sale price¥18,800
オパール 9.120ctルース

[On Sale at 10pm on October 1st] Australian Boulder Opal 9.120ct Loose Sale price¥98,000
北海道産UVオパール 12.259ctルース ワッペン付

UV opal from Hokkaido 12.259ct loose with patch Sale price¥6,980
ピンクスターサファイア 0.619ctルース

Pink star sapphire 0.619ct loose Sale price¥5,980
ミャンマー産バイカラースターサファイア 1.190ctルース（ピンクサファイア）

Bicolor star sapphire from Myanmar 1.190ct loose (pink sapphire) Sale price¥25,800
シエラレオネ産サファイア 1.210ctルース

Sierra Leone sapphire 1.210ct loose Sale price¥7,980
シエラレオネ産サファイア 1.470ctルース

Sierra Leone sapphire 1.470ct loose Sale price¥9,800
コロンビア産雲母インエメラルド 1.314ctルース

Colombian mica in emerald 1.314ct loose Sale price¥39,800
【KEN氏】メキシコ産オパール 8mm/1.430ctルース - カラッツSTORE

Mexican Opal 8mm/1.430ct Loose Sale price¥25,800
オパール 14.837ctルース

Australian opal 14.837ct loose Sale price¥98,000
トラピッチェエメラルド 0.650ctルース（逆トラピッチェ）

Trapiche emerald 0.650ct loose (reverse trapiche) Sale price¥6,980
ピンクサファイア 0.934ctルース

Pink sapphire 0.934ct loose Sale price¥15,800
【KEN氏】メキシコ産ファイアオパール 1.580ctルース - カラッツSTORE

Mexican Fire Opal 1.580ct Loose Sale price¥25,800
ブルーサファイア 0.591ctルース

[Sold at 10pm on September 15th] Blue sapphire 0.591ct loose stone Sale price¥9,800
【さくらインカット】メキシコ産オパール 9mm/1.532ctルース - カラッツSTORE

[Sale at 10 PM on September 15th] [Sakura In-Cut] Mexican Opal 9mm/1.532ct Loose Sale price¥45,800
[On Sale 10/12 at 10 PM] [Limited to 10 stones] Unheated Sapphire (3.5mm, Round Cut) from Theppanawa Mine, Sri Lanka (Loose) [Multiple Purchase Discounts Available]

[On Sale 10/12 at 10 PM] [Limited to 10 stones] Unheated Sapphire (3.5mm, Round Cut) from Theppanawa Mine, Sri Lanka (Loose) [Multiple Purchase Discounts Available] Sale price¥4,980
コロンビア産エメラルド 0.222ctルース

[On Sale at 10 PM on September 11th] Colombian Emerald 0.222ct Loose Sale price¥59,800
グリーンサファイア 7.545ctルース（スペードカット）

Green sapphire 7.545ct loose (spade cut) Sale price¥59,800
カンテラオパール 17.284ctルース

Cantera opal 17.284ct loose Sale price¥29,800
【KEN氏】ファイアオパール 1.360ctルース - カラッツSTORE

Fire opal 1.360ct loose Sale price¥9,800
バンカチャサファイア（スターサファイア） 69.655ctルース

Bangkacha sapphire (star sapphire) 69.655ct loose Sale price¥148,000
【NOBU氏】アマゾン産グリーンオパール 《コラボ》6.8mmルース - カラッツSTORE

[Mr. NOBU] Green Opal from Amazon [Collaboration] 6.8mm loose Sale price¥6,980
【猫カット】アマゾン産グリーンオパール 6.5mm/0.580ctルース

[Cat cut] Amazon green opal 6.5mm/0.580ct loose Sale price¥6,980
コロンビア産エメラルド 0.101ctルース

[On Sale at 10 PM on September 19th] Colombian Emerald 0.101ct Loose Sale price¥15,800
ブルーサファイア 0.314ctルース

[Sold at 10 PM on September 19th] Blue Sapphire 4.0mm/0.314ct Loose Sale price¥112,800
フローレスダイヤモンド（H&C） 0.266ctルース(D, FL, 3Excellent H&C)

[On Sale at 10 PM on September 6th] Flawless Diamond (H&C) 4.0mm/0.266ct Loose (D, FL, 3 Excellent H&C) GIA & Chuhokan Sale price¥188,000
[On sale at 10 PM on September 6th] Limited to 8 stones: Kite cut loose stone (Illusion Sunstone, Sapphire, Emerald, Spessartine Garnet, etc.) [Multiple purchase discounts available]

[On sale at 10 PM on September 6th] Limited to 8 stones: Kite cut loose stone (Illusion Sunstone, Sapphire, Emerald, Spessartine Garnet, etc.) [Multiple purchase discounts available] Sale price¥5,980
[Available at 10 PM on September 6th] Limited to 4 stones: One loose pink sapphire (pear shape) from Madagascar [Multiple purchase discounts available]

[Available at 10 PM on September 6th] Limited to 4 stones: One loose pink sapphire (pear shape) from Madagascar [Multiple purchase discounts available] Sale price¥5,980
[On sale September 6th at 10 PM] [Limited to 7 stones] Madagascar sapphire, 1 loose stone (long hexagonal cut, approximately 5 x 3 mm) [Multiple purchase discounts available]

[On sale September 6th at 10 PM] [Limited to 7 stones] Madagascar sapphire, 1 loose stone (long hexagonal cut, approximately 5 x 3 mm) [Multiple purchase discounts available] Sale price¥6,980
[On Sale at 10 PM on September 5th] Pt950 Myanmar Gray Spinel (Platinum Spinel) 5.5mm/0.685ct Black Diamond Ring

[On Sale at 10 PM on September 5th] Pt950 Myanmar Gray Spinel (Platinum Spinel) 5.5mm/0.685ct Black Diamond Ring Sale price¥128,000
Fire Opal 2 Stone Pair 4mm/0.336ct Loose

Fire Opal 2 Stone Pair 4mm/0.336ct Loose Sale price¥3,980
エメラルド 15.219ctルース 日独鑑

Emerald 15.219ct loose Japanese-German book Sale price¥298,000
ダイヤモンド 0.618ctルース(I, I1,ツリーカット)

Diamond 0.618ct loose (I, I1, tree cut) Sale price¥128,000
[On Sale at 10 PM on September 5th] [Limited to 6 stones] 1 Unheated Sri Lankan Sapphire Loose with Silk Inclusions (Average 0.31ct) [Multiple Purchase Discounts Available]

[On Sale at 10 PM on September 5th] [Limited to 6 stones] 1 Unheated Sri Lankan Sapphire Loose with Silk Inclusions (Average 0.31ct) [Multiple Purchase Discounts Available] Sale price¥4,980
[On sale at 10 PM on September 6th] [Limited to 6 stones] 1 loose unheated sapphire from Sri Lanka (average 0.77 carats) [Multiple purchase discounts available]

[On sale at 10 PM on September 6th] [Limited to 6 stones] 1 loose unheated sapphire from Sri Lanka (average 0.77 carats) [Multiple purchase discounts available] Sale price¥6,980
コロンビア産ミントカラーエメラルド 0.214ctルース

[On Sale at 10 PM on August 31st] Colombian Mint Emerald 0.214ct Loose Sale price¥8,800
ザンビア産エメラルド 0.159ctルース

[On sale at 10pm on September 3rd] Zambian emerald 0.159ct loose stone Sale price¥8,800

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.