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[On sale from 10/4 at 10 PM] [Limited to 17 stones] Tanzanian Bicolor Sapphire Loose Stone [Multiple purchase discounts available]

[On sale from 10/4 at 10 PM] [Limited to 17 stones] Tanzanian Bicolor Sapphire Loose Stone [Multiple purchase discounts available] Sale price¥4,580
[On sale from 10/5 at 10 PM] Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available]

[On sale from 10/5 at 10 PM] Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available] Sale price¥3,980
[Available at 10 PM on September 21st] Limited to 20 stones. Includes 2 Koshu Kiriko Fire Opals. 1 loose fire opal gacha. Discounts available for multiple purchases.

[Available at 10 PM on September 21st] Limited to 20 stones. Includes 2 Koshu Kiriko Fire Opals. 1 loose fire opal gacha. Discounts available for multiple purchases. Sale price¥4,980
Limited to 16 stones: Greenland Ruby, 1.2mm, Loose (Top Quality, Drawstring Pouch Included) Multiple Purchase Discounts Available

Limited to 16 stones: Greenland Ruby, 1.2mm, Loose (Top Quality, Drawstring Pouch Included) Multiple Purchase Discounts Available Sale price¥3,980
タンザニア・ウィンザー産バイカラーサファイア 1.030ctルース

Bicolor sapphire 1.030ct loose from Windsor, Tanzania Sale price¥89,800
オーストラリア産ボルダーオパール 0.874ctルース

Australian boulder opal 0.874ct loose Sale price¥3,980
オーストラリア産ボルダーオパール 1.156ctルース

Australian boulder opal 1.156ct loose Sale price¥3,980
オーストラリア産ボルダーオパール 1.173ctルース

Australian boulder opal 1.173ct loose Sale price¥5,980
オーストラリア産ボルダーオパール 0.982ctルース

Australian boulder opal 0.982ct loose Sale price¥6,980
ダイヤモンド（H&C） 3.8mm/0.208ctルース(G, IF, 3Excellent H&C)

[On Sale at 10 PM on September 28th] 3.8mm/0.208ct Internally Flawless Diamond (H&C) Loose Stone (G, IF, 3 Excellent H&C) Sale price¥69,800
イエローダイヤモンド 0.165ctルース(FANCY VIVID ORANGY YELLOW, SI-2)

[On Sale at 10 PM on September 28th] Yellow Diamond 3.4mm/0.165ct Loose (Fancy Vivid Orangy Yellow, SI-2) Sale price¥29,800
ボルダーオパール 1.868ctルース

Australian boulder opal 1.868ct loose Sale price¥18,800
オーストラリア産ボルダーオパール 1.675ctルース

Australian boulder opal 1.675ct loose Sale price¥14,800
オーストラリア産ボルダーオパール 28.880ctルース

Australian boulder opal 28.880ct loose Sale price¥59,800
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
【32501454掲載】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
【32501451掲載】ピンクダイヤモンド 0.046ctルース(FANCY LIGHT PURPLISH PINK, SI-2)

[32501451 published] Pink diamond 0.046ct loose (FANCY LIGHT PURPLISH 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
[On sale at 10 PM on September 21st] Limited to 14 stones: Beryllium-heated Sapphire (3.5mm, KEN Cut) - Single Loose Stone [Multiple purchase discounts available]

[On sale at 10 PM on September 21st] Limited to 14 stones: Beryllium-heated Sapphire (3.5mm, KEN Cut) - Single Loose Stone [Multiple purchase discounts available] Sale price¥1,580
【12559786掲載】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
[Available at 10 PM on September 15th] Limited to 11 stones: One loose silky pink sapphire from Vietnam (2.0-2.5mm, heavy inclusions) [Multiple purchase discounts available]

[Available at 10 PM on September 15th] Limited to 11 stones: One loose silky pink sapphire from Vietnam (2.0-2.5mm, heavy inclusions) [Multiple purchase discounts available] Sale price¥3,980
[On sale at 10 PM on September 28th] [Limited to 14 stones] 3mm Unheated Sapphire from Theppanawa Mine, Sri Lanka (Multiple purchase discounts available)

[On sale at 10 PM on September 28th] [Limited to 14 stones] 3mm Unheated Sapphire from Theppanawa Mine, Sri Lanka (Multiple purchase discounts available) Sale price¥5,980
《再入荷》【宝石商の道具】ゲルタックケース3個セット《透明・黒背景の2種類有》（ブルーサファイア3石付） - カラッツSTORE

[Jeweler's Tools] Set of 3 gel tack cases (2 types: transparent and black background) (includes 3 blue sapphires) (discount available for multiple purchases) Sale price¥3,980
H&C（ハート&キューピッド）専用スコープ（ダイヤモンド 専用スコープ) - カラッツSTORE

[Jeweler's Tools] H&C (Heart & Cupid) Special Scope (Diamond Special Scope) Sale price¥1,580
[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery Sale price¥6,980

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.