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[Sale from 10 PM on June 28] [Limited to 15 Stones] Synthetic Gem Gacha 💎 Includes a 1.02ct/D/VS1/3EX certified lab-grown diamond, normally priced at 50,000 yen (with a bonus synthetic cobalt spinel) [Bulk purchase discount available]

[Sale from 10 PM on June 28] [Limited to 15 Stones] Synthetic Gem Gacha 💎 Includes a 1.02ct/D/VS1/3EX certified lab-grown diamond, normally priced at 50,000 yen (with a bonus synthetic cobalt spinel) [Bulk purchase discount available] Sale price¥5,980
[Sale 6/] 10:00 PM - Limited 11 Stones - Sri Lankan Pink Sapphire (Emerald Cut) Average 0.73ct (Multiple Purchase Discount Available)

[Sale 6/] 10:00 PM - Limited 11 Stones - Sri Lankan Pink Sapphire (Emerald Cut) Average 0.73ct (Multiple Purchase Discount Available) Sale price¥5,980
[On Sale June 27, 10 PM JST] "Limited to 10 Stones" Rough Stone Gacha including Paraiba Tourmaline (CuO: 1.7%+ content) and Benitoite (with a bonus Oregon Sunstone) "Multiple Purchase Discount Available"

[On Sale June 27, 10 PM JST] "Limited to 10 Stones" Rough Stone Gacha including Paraiba Tourmaline (CuO: 1.7%+ content) and Benitoite (with a bonus Oregon Sunstone) "Multiple Purchase Discount Available" Sale price¥2,980
Limited to 6 stones: 1 loose pink spinel from Mahenge, Tanzania (round cut, 3.0mm) Discounts for multiple purchases

Limited to 6 stones: 1 loose pink spinel from Mahenge, Tanzania (round cut, 3.0mm) Discounts for multiple purchases Sale price¥4,980
【Sale starts 10PM on June 27th】《Limited 8 Stones》Myanmar Black Spinel (B Grade)《Multiple Purchase Discount Available》

【Sale starts 10PM on June 27th】《Limited 8 Stones》Myanmar Black Spinel (B Grade)《Multiple Purchase Discount Available》 Sale price¥1,980
[Sale at 10 PM on 6/27] Limited to 9 Stones: Myanmar Red Spinel (Round Cut, approx. 3.5mm) - Multiple Purchase Discount Available

[Sale at 10 PM on 6/27] Limited to 9 Stones: Myanmar Red Spinel (Round Cut, approx. 3.5mm) - Multiple Purchase Discount Available Sale price¥9,800
{June Campaign Limited Edition} Rare Stone Gacha💎 Padparadscha Sapphire 0.3ct+ with Certificate, Benitoite, Red Beryl, etc. Loose Stones for 1 Stone {Multiple Purchase Discounts Available}

{June Campaign Limited Edition} Rare Stone Gacha💎 Padparadscha Sapphire 0.3ct+ with Certificate, Benitoite, Red Beryl, etc. Loose Stones for 1 Stone {Multiple Purchase Discounts Available} Sale price¥7,980
coming soon [12563734] Tanzanian Red Spinel, 0.229ct Loose

[12563734] Tanzanian Red Spinel, 0.229ct Loose Sale price¥45,800
アメリカ産オレゴンサンストーン 1.397ctルース

[On sale 7/12 at 10 PM] US Oregon Sunstone 7.1mm/1.397ct Loose Stone Sale price¥39,800
アメリカ産オレゴンサンストーン 4.864ctルース

[On sale July 11th at 10 PM JST] USA Oregon Sunstone 10.8mm/4.864ct Loose Gemstone Sale price¥98,000
ブルガリア産スファレライト 1.790ctルース

[On sale July 12th at 10 PM] Bulgarian Sphalerite 7.0mm/1.790ct Loose Stone Sale price¥59,800
アメリカ産オレゴンサンストーン 1.840ctルース

[On sale July 10th at 10 PM] US Oregon Sunstone 8.1mm/1.840ct Loose Sale price¥39,800
オーストラリア産オーストラリア産レインボーラティスサンストーン 2.902ctルース

[Sale on July 10th at 10 PM] Australian Rainbow Lattice Sunstone 2.902ct Loose Sale price¥29,800
オーストラリア産オーストラリア産レインボーラティスサンストーン 2.208ctルース

[Sale on 7/10 at 10 PM] Australian Rainbow Lattice Sunstone 2.208ct Loose Stone Sale price¥22,800
タンザニア産レッドスピネル 0.098ctルース 鑑別書

[12563393 listed] Tanzanian Red Spinel 0.098ct Loose Stone Sale price¥15,800
K9 ブルーサファイア・ダイヤモンドペンダントトップ（ネックレストップ） 鑑別書

[Published on 22602650] [Colorful] K9 Blue Sapphire Pendant Top (Necklace Top) Sale price¥18,800
Pt900 ブルーサファイア 2.67ct・ダイヤモンド0.75ctペンダントトップ（ネックレストップ）鑑別書

[Item 22602648] [Colorflee] Pt900 Blue Sapphire 2.67ct Pendant Top (Necklace Top) Sale price¥228,000
Pt850 ブルーサファイア 0.66ct・ダイヤモンド0.19ctリング 鑑別書

[22602646 listed] [Karafuri] Pt850 Blue Sapphire 0.66ct Ring Sale price¥59,800
タンザニア産ジルコン 1.077ctルース

[Listing 12563380] Unset 1.077ct Tanzanian Zircon Sale price¥12,800
タンザニア産ジルコン 2.053ctルース

[Published on 12563384] Tanzanian Zircon 2.053ct Loose Sale price¥19,800
タンザニア産ピンクスピネル 0.148ctルース

[Posted on 12563395] Tanzanian Pink Spinel 0.148ct Loose Gemstone Sale price¥22,800
イエローサファイア 2.150ctルース

[Lottery Sale_0612_09] Yellow Sapphire 2.150ct Loose Gemstone GIT Sale price¥158,000
マラウイ産バイカラージルコン 1.434ctルース

[Listed as 12562693] Malawi Bicolor Zircon 1.434ct Loose Sale price¥79,800
ジェレメジェバイト 0.103ctルース

[On sale July 3 at 10 PM] Jeremejevite from Namibia, 0.103 ct loose stone, with certificate Sale price¥25,800
ジェレメジェバイト 0.218ctルース

[On sale July 3 at 10 PM] Jeremejevite from Namibia, 0.218ct loose stone, with a certificate of authenticity Sale price¥49,800
サンタマリアアクアマリン 0.188ctルース

[On sale 7/9 at 10 PM] Brazilian Santa Maria Aquamarine Loose Stone 0.188ct with certification Sale price¥25,800
スリランカ産ブルーサファイア 0.550ctルース

[On sale July 5th at 10 PM] Sri Lankan Blue Sapphire, 0.550 ct Loose Stone with Gemstone Report Sale price¥39,800
スリランカ産ブルーサファイア 0.269ctルース

[Sale starts July 6th at 10 PM] Sri Lankan Blue Sapphire 4.0mm/0.269ct Loose Stone with Appraisal Sale price¥29,800
スリランカ産オレンジサファイア 0.654ctルース

[On sale July 5, 10 PM] Sri Lankan orange sapphire 0.654ct loose stone with gemological report Sale price¥29,800
スリランカ産イエローサファイア 0.815ctルース

[On sale July 6th at 10 PM] Sri Lankan Yellow Sapphire 0.815ct Loose Stone with Certification Sale price¥15,800
タンザニア産ウィンザーサファイア 1.137ctルース

[On sale July 5th at 10 PM] Tanzanian Windsor Sapphire (Brown Sapphire) 1.137ct Loose Stone with Certificate Sale price¥49,800
タンザニア産ウィンザーサファイア 0.393ctルース

[On sale July 9th, 10 PM JST] Tanzanian Windsor Sapphire (Purple Sapphire) 0.393ct Loose Stone with Certificate Sale price¥18,800
タンザニア産マヘンゲスピネル（ピンクスピネル） 0.566ctルース

[On sale July 5th at 10 PM] 0.566ct Loose Tanzanian Mahenge Spinel (Pink Spinel) with identification Sale price¥55,800
タンザニア産マヘンゲスピネル（ピンクスピネル） 0.333ctルース

[On Sale July 10 at 10 PM JST] Tanzanian Mahenge Spinel (Pink Spinel) 0.333ct Loose Stone with Gemological Report Sale price¥29,800
サファイア 0.553ctルース

【Sales start: July 10, 10 PM JST】Madagascar Sapphire 0.553ct Loose Gemstone with Identification Report Sale price¥13,800
パパラチアサファイア 0.156ctルース

[Sales start July 5, 10 PM JST] Madagascar Padparadscha Sapphire 3.3mm/0.156ct Loose Stone - Central Gem Laboratory certified Sale price¥29,800
パパラチアサファイア 0.416ctルース

[On sale July 5th at 10 PM] Madagascar Padparadscha Sapphire 4.5mm/0.416ct Loose Stone with Chubo Certification Sale price¥98,000
K18 合成オレンジサファイア リング 鑑別書

[Posted on 22602644] [Calafri] K18 Synthetic Sapphire Ring Sale price¥45,800
Pt900 ブルーサファイア 0.43ct・ダイヤモンド0.44ctリング 鑑別書

[Item ID: 22602630] [Karafuri] Pt900 Blue Sapphire 0.43ct Ring Sale price¥98,000
オレゴンサンストーン 0.736ctルース

Oregon Sunstone from the United States 0.736ct loose stone Sale price¥8,800
スリランカ産イエローサファイア 0.349ctルース

Sri Lankan Yellow Sapphire 0.349ct Loose Sale price¥12,800
タンザニア産バイカラーゾイサイト 0.489ctルース

Tanzania Bicolor Zoisite 4.6mm/0.489ct Loose Stone Sale price¥9,800
タンザニア産バイカラーゾイサイト 0.540ctルース

Tanzania Bicolor Zoisite 4.8mm/0.540ct Loose Stone Sale price¥9,800
[Sale on June 27th at 10 PM] Limited to 2 Stones: Myanmar Red Spinel (Pear Shape approx. 4x3mm) - Multi-Purchase Discount Available

[Sale on June 27th at 10 PM] Limited to 2 Stones: Myanmar Red Spinel (Pear Shape approx. 4x3mm) - Multi-Purchase Discount Available Sale price¥9,800
K18 ブルーサファイア 1.89ct・ダイヤモンド0.74ctリング 鑑別書

[On sale June 27th at 10 PM] [Colorflee] K18 Blue Sapphire 1.89ct / Diamond 0.74ct Ring with Appraisal Report Sale price¥298,000
タンザニア産バイカラーゾイサイト 0.486ctルース

Tanzania Bicolor Zoisite 4.7mm/0.486ct Loose Stone Sale price¥9,800
タンザニア産バイカラーゾイサイト 0.295ctルース

Tanzania Bicolor Zoisite 0.295ct Loose Stone Sale price¥7,980
バイカラーゾイサイト 0.286ctルース

Tanzania Bicolor Zoisite 0.286ct Loose Stone Sale price¥7,980

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.