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[On sale 10/31 at 10 PM] Limited to 10 stones: 0.20ct Yellow Diamond Loose Stone, Including Fancy Colors [Multiple purchase discounts available]

[On sale 10/31 at 10 PM] Limited to 10 stones: 0.20ct Yellow Diamond Loose Stone, Including Fancy Colors [Multiple purchase discounts available] Sale price¥2,980
[On sale from 10/25 at 10 PM] Limited to 12 stones: Mexican Opal (Custom Faceted Cut) Loose Stone [Multiple purchase discounts available]

[On sale from 10/25 at 10 PM] Limited to 12 stones: Mexican Opal (Custom Faceted Cut) Loose Stone [Multiple purchase discounts available] Sale price¥3,980
[On Sale 10/12 at 10 PM] [Limited to 15 stones] One loose, unheated silky pink sapphire from Vietnam (2.5mm, round cut) [Multiple purchase discounts available]

[On Sale 10/12 at 10 PM] [Limited to 15 stones] One loose, unheated silky pink sapphire from Vietnam (2.5mm, round cut) [Multiple purchase discounts available] Sale price¥3,980
[On Sale at 10 PM on October 12th] Limited to 14 stones: One loose hot pink sapphire from Mozambique (pear-shaped, approximately 4 x 3 mm) [Multiple purchase discounts available]

[On Sale at 10 PM on October 12th] Limited to 14 stones: One loose hot pink sapphire from Mozambique (pear-shaped, approximately 4 x 3 mm) [Multiple purchase discounts available] Sale price¥4,980
[On sale 10/22 at 10 PM] Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]

[On sale 10/22 at 10 PM] Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available] Sale price¥2,980
[On Sale at 10 PM on October 12th] [Limited to 7 stones] One loose, oil-free emerald from Russia (1.5-1.6mm, step cut) [Multiple purchase discounts available]

[On Sale at 10 PM on October 12th] [Limited to 7 stones] One loose, oil-free emerald from Russia (1.5-1.6mm, step cut) [Multiple purchase discounts available] Sale price¥5,980
スリランカ産ブルーサファイア 0.187ctルース

Sri Lankan blue sapphire 0.187ct loose stone Sale price¥29,800
マダガスカル産バイカラーサファイア 0.266ctルース

Madagascar Bicolor Sapphire 0.266ct Loose Sale price¥16,800
オーストラリア産ボルダーオパール 3.122ctルース

[12559449] Australian Boulder Opal 3.122ct Loose Sale price¥29,800
メキシコ産オパール 0.233ctルース

[12559448] Mexican Opal 0.233ct Loose Sale price¥12,800
コロンビア産エメラルド 0.121ctルース

Colombian emerald 0.121ct loose stone Sale price¥12,800
メキシコ産ハイアライトオパール 1.420ctルース

【11/2 22時販売】メキシコ産ハイアライトオパール 1.420ctルース Sale price¥18,800
メキシコ産ハイアライトオパール 0.743ctルース

[11/2 22:00] Mexican Hyalite Opal 0.743ct Loose Sale price¥12,800
ブラジル産ミントカラーエメラルド 0.491ctルース

[11/2 22:00] Brazilian mint-colored emerald 0.491ct loose stone Sale price¥15,800
マダガスカル産バイカラーサファイア 0.318ctルース

[On Sale 11/1 at 10pm] Madagascar Bicolor Sapphire 0.318ct Loose Sale price¥25,800
[On sale from 10/25 at 10 PM] Limited to 11 stones: Sakura-shaped Contralus Opal and a specially cut Opal Gacha with one loose stone [Multiple purchase discounts available]

[On sale from 10/25 at 10 PM] Limited to 11 stones: Sakura-shaped Contralus Opal and a specially cut Opal Gacha with one loose stone [Multiple purchase discounts available] Sale price¥3,980
タンザニア産バイカラーサファイア 0.486ctルース

[On Sale at 10 PM on October 31st] Tanzanian Bicolor Sapphire 0.486ct Loose Sale price¥12,800
マダガスカル産バイカラーサファイア 0.633ctルース

[On Sale at 10 PM on October 31st] Madagascar Bicolor Sapphire 0.633ct Loose Sale price¥39,800
メキシコ産ファイアオパール 0.345ctルース

[On Sale at 10 PM on October 29th] Mexican Fire Opal 5.8mm/0.345ct Loose Sale price¥12,800
メキシコ産ファイアオパール 0.199ctルース

[On Sale at 10 PM on 10/28] Mexican Fire Opal 4.8mm/0.199ct Loose Sale price¥8,800
[Lottery Sales Page] Adult Sebon Star 3rd Edition Charmy Premium Model <Royal Blue Sapphire> (Sales Price: 1,580,000 yen)

[Lottery Sales Page] Adult Sebon Star 3rd Edition Charmy Premium Model <Royal Blue Sapphire> (Sales Price: 1,580,000 yen) Sale price¥0
ダイヤモンド原石（メイカブル） 0.185ctルース（VS-SI）

Rough diamond (makeable) 0.185ct loose (VS-SI) Sale price¥19,800
ダイヤモンド原石（メイカブル） 0.345ctルース（VS-SI相当）

Rough diamond (makeable) 0.345ct loose (VS-SI equivalent) Sale price¥29,800
スリランカ産スターサファイア 1.323ctルース

Sri Lankan star sapphire 1.323ct loose Sale price¥3,980
スリランカ産スターサファイア 1.061ctルース

Sri Lankan star sapphire 1.061ct loose Sale price¥3,980
Brazilian emerald 3.3mm/0.119ct loose

Brazilian emerald 3.3mm/0.119ct loose Sale price¥22,800
ブラジル産エメラルドキャッツアイ0.459ctルース

Brazilian emerald cat's eye 0.459ct loose Sale price¥5,980
カラーチェンジサファイア 0.283ctルース

Color change sapphire 0.283ct loose Sale price¥3,980
カラーチェンジサファイア 0.401ctルース

Color change sapphire 0.401ct loose Sale price¥3,980
コロンビア産パイライトインエメラルド 7.836ctルース

Colombian pyrite in emerald 7.836ct loose Sale price¥398,000
K18PG ピンクサファイア 0.32ct リング

[On sale from 10/22 at 10pm] 18KPG pink sapphire 0.32ct brown diamond ring Sale price¥69,800
[On sale from 10/22 at 10 PM] Limited to 14 stones: Lab-grown diamond (cabochon cut, approximately 2.3mm) - 1 loose diamond [Multiple purchase discounts available]

[On sale from 10/22 at 10 PM] Limited to 14 stones: Lab-grown diamond (cabochon cut, approximately 2.3mm) - 1 loose diamond [Multiple purchase discounts available] Sale price¥4,980
[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available]

[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available] Sale price¥3,980
K18YG アメリカ産オレゴンサンストーン 0.44ct・ピンクダイヤモンド・オレンジスピネル リング

[Available at 10:00 PM on October 19th] 18K Yellow Gold Ring with 0.44ct Oregon Sunstone from the United States, Pink Diamond, and Orange Spinel Sale price¥158,000
メキシコ産オパール（ファセットカット） 0.242ctルース

[On Sale at 10 PM on October 25th] Mexican Opal (Faceted) 0.242ct Loose Sale price¥8,800
[10/13 22:00 Sale] Pt900 Ice Blue Diamond 0.333ct 0.333ct Akoya Pearl 8.0mm Earrings

[10/13 22:00 Sale] Pt900 Ice Blue Diamond 0.333ct 0.333ct Akoya Pearl 8.0mm Earrings Sale price¥98,000
[On Sale at 10 PM on October 13th] Fancy Intense Purple Pink Diamond 0.021ct Loose (FANCY INTENSE PURPLE PINK, SI2)

[On Sale at 10 PM on October 13th] Fancy Intense Purple Pink Diamond 0.021ct Loose (FANCY INTENSE PURPLE PINK, SI2) Sale price¥39,800
K18PGカナリーイエローダイヤモンド（トリートメント）0.214ct・アレキサンドライトリング 中宝付

[Available at 10:00 PM on October 13th] 18K White Gold and PG Canary Yellow Diamond (Treated) 0.214ct (SI-1, Fancy Intense Greenish Yellow) and Alexandrite Ring Sale price¥128,000
ブラジル産アレキサンドライト 0.097ctルース

[On Sale at 10 PM on October 13th] Brazilian Alexandrite 0.097ct Loose Stone (Emerald Cut) Sale price¥38,800
[10/12 22:00 Sale] Australian Crystal &amp; White Opal 13-Stone Half Eternity Ring Set (2.0mm)

[10/12 22:00 Sale] Australian Crystal & White Opal 13-Stone Half Eternity Ring Set (2.0mm) Sale price¥79,800
[Available at 10:00 PM on October 12th] "Purple Sun" Ice Blue Sapphire, Amethyst, Bekiri Blue Garnet, and Tanzanite 13-Stone Half Eternity Ring Set (2.0mm)

[Available at 10:00 PM on October 12th] "Purple Sun" Ice Blue Sapphire, Amethyst, Bekiri Blue Garnet, and Tanzanite 13-Stone Half Eternity Ring Set (2.0mm) Sale price¥98,000
ラボグロウンダイヤモンド（合成ダイヤモンド） 0.290ctルース(FANCY VIVID PINK, VS-2)

[On Sale at 10 PM on October 12th] Lab-Grown Diamond (Synthetic Diamond) 0.290ct Loose (FANCY VIVID PINK, VS-2) Sale price¥45,800
非加熱ロイヤルブルーサファイア 0.640ctルース AIGS

[10/12 22:00 Sale] Unheated Royal Blue Sapphire 0.640ct Loose AIGS Sale price¥158,000
スリランカ産スターサファイア 1.093ctルース

[10/12 22:00 Sale] Sri Lankan Star Sapphire 1.093ct Loose Sale price¥8,800
ピジョンブラッドルビー 0.320ctルース AIGS

[10/12 22:00 Sale] Pigeon Blood Ruby 0.320ct Loose Stone AIGS Sale price¥48,800
K18YG ミャンマー産翡翠（ヒスイ） 0.434ct・エメラルドリング

[On sale from 10/11 at 10 PM] 18K Yellow Gold Myanmar Jadeite and Emerald 0.434ct Ring Sale price¥79,800
オーストラリア産ボルダーオパール 1.457ctルース

[10/18 22:00 Sale] Australian Boulder Opal 1.457ct Loose Sale price¥9,800
ピジョンブラッドルビー 0.290ctルース

[On Sale at 10 PM on October 17th] Pigeon Blood Ruby 4.0mm/0.290ct Loose Stone AIGS Sale price¥59,800

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.