Above ¥100,000

【10/22 22時販売】K18PGブラジル産パライバトルマリン0.49ct・パライバトルマリンリング GIA Sale price¥198,000

【10/19 22時販売】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 Sale price¥158,000

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

【10/13 22時販売】K18PG カナリーイエローダイヤモンド（トリートメント） 0.214ct（SI-1,FANCY INTENSE GREENISH YELLOW）・アレキサンドライトリング Sale price¥128,000

【10/13 22時販売】アメリカ産ベニトアイト 0.185ctルース Sale price¥128,000

【10/13 22時販売】アメリカ産ベニトアイト 0.175ctルース Sale price¥128,000

【10/12 22時販売】タンザニア産コーネルピン（合計1.151ct）・９石ハーフエタニティリングセット（3.0mm) Sale price¥128,000

【10/12 22時販売】タンザニア産コーネルピン（合計1.103ct）９石ハーフエタニティリングセット（3.0mm) Sale price¥118,000

[10/12 22:00 Sale] Unheated Royal Blue Sapphire 0.640ct Loose AIGS Sale price¥158,000

[On Sale 10/11 at 10 PM] Brazilian Paraiba Tourmaline 0.170ct Loose Stone (CuO: 2.1%, MnO: 1.1%) Sale price¥198,000

[12560902] Russian Demantoid Garnet (Horsetail) 0.487ct Loose Stone Sale price¥110,000

[On Sale at 10 PM on October 12th] Russian Emerald 0.387ct Loose Stone (F1, Minor Enhancement) GIA Sale price¥128,000

[On Sale at 10 PM on October 12th] Russian Emerald 0.282ct Loose Stone (F1, Minor Enhancement) GIA Sale price¥128,000

[On Sale at 10pm on October 5th] American Benitoite 0.262ct Loose Stone Sale price¥128,000

[On Sale at 10pm on October 5th] Brazilian Aquamarine 8.858ct Loose Stone Sale price¥198,000

[Posted 12543723] Hemimorphite 64.144ct loose Sale price¥198,000

Green Zoisite 3.617ct loose Sale price¥118,000

タンザニア産ピンクゾイサイト 6.7mm/1.393ctルース（ピーチタンザナイト）

Pink zoisite from Tanzania 6.7mm/1.393ct loose (peach tanzanite) Sale price¥128,000

[On Sale at 10 PM on September 28th] Bolivian Phosphophyllite 0.436ct Loose Stone with Certificate of Authenticity Sale price¥298,000

Fukuoka SoftBank Hawks Persol Pacific League Championship Sale! Limited Quantity & Limited Time 10% Discount (¥398,000 → ¥358,200) & Free Jersey for a Limited Time Only! Limited to 200: SoftBank Hawks 20th Anniversary Pure Gold Oval Coin Sale priceFrom ¥358,200

Brazilian Paraiba Tourmaline Ring and Half Eternity Ring Set (1.2mm) Sale price¥188,000

Top Quality: Benitoite 7 Stones and Diamond 6 Stones (H&C) Half Eternity Ring Set (2.0mm) Sale price¥158,000

ブラジル産パライバトルマリン 0.275ctルース（CuO:1.5％.MnO:2.3％）

Brazilian Paraiba tourmaline 0.275ct loose (CuO:1.5%.MnO:2.3%) Sale price¥358,000

Paraiba tourmaline from Brazil 0.154ct loose (CuO:1.1wt%, MnO:1.4wt%) Sale price¥128,000

Royal blue sapphire 1.44ct loose GIA Sale price¥188,000

Brazilian particolor Paraiba tourmaline 0.26ct loose GIA Sale price¥598,000

Unheated Paraiba tourmaline from Brazil 0.050ct loose GIA (color change Paraiba tourmaline) Sale price¥148,000

Bicolor pink euclase from Brazil 3.210ct loose Japanese-German edition Sale price¥798,000

Paracytic peridot 0.536ct loose Sale price¥188,000

Watermelon tourmaline 44.201ct Ruth Japanese-German book Sale price¥398,000

Paudlettite 0.375ct loose Japanese-German book Sale price¥298,000

Particolor tourmaline 32.207ct loose (tricolor tourmaline) Sale price¥398,000

ロシア産デマントイドガーネット（ホーステール認む） 5.8mm/0.876ctルース

Russian demantoid garnet (horsetail recognized) 5.8mm/0.876ct loose Sale price¥258,000

ロシア産デマントイドガーネット（ホーステール認む） 5.3mm/0.633ctルース

Russian demantoid garnet (horsetail recognized) 5.3mm/0.633ct loose Sale price¥198,000

Bangkacha sapphire (star sapphire) 69.655ct loose Sale price¥148,000

[Sold at 10 PM on September 7th] [Koshu Precious Stone Cut Glass] 18K Rose Quartz 15.964ct Necklace by Nikko Kan Sale price¥128,000

[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 5th] Pt950 Myanmar Gray Spinel (Platinum Spinel) 5.5mm/0.685ct Black Diamond Ring Sale price¥128,000

Emerald 15.219ct loose Japanese-German book Sale price¥298,000

Bicolor Sphene 4.50ct loose Sale price¥258,000

【甲州貴石切子】特大スモーキークォーツ 108.336ctルース《コラボ》ワッペン付

[Koshu Precious Stone Kiriko] Extra large smoky quartz 108.336ct loose "Collaboration" with emblem Sale price¥128,000

Colombian Euclase 548.00ct rough stone Sale price¥198,000

Kunzite 50.260ct loose Sale price¥188,000

Diamond 0.618ct loose (I, I1, tree cut) Sale price¥128,000

[On sale at 10pm on September 6th] Russian emerald 0.249ct loose stone Sale price¥158,000

ロシア産デマントイドガーネット（ホーステール認む） 5.2mm/0.633ctルース

Russian demantoid garnet (horsetail recognized) 5.2mm/0.633ct loose Sale price¥198,000

Unheated sapphire 2.430ct loose GIA Sale price¥298,000

Tanzanite 41.690ct loose Sale price¥2,480,000

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.