Round Cut

【11/16 22時販売】アメリカ産ノンオイルレッドベリル 2.5mm/0.050ctルース GIA Sale price¥59,800

【11/15 22時販売】GGG（ガドリウムガリウムガーネット） 6.4mm/2.380ctルース Sale price¥18,800

【11/10 22時販売】モザンビーク産ルビー 3.4mm/0.139ctルース Sale price¥25,800

[On Sale 11/3 at 10pm] Afghanistan Green Tourmaline 7.8mm/1.738ct Loose Stone Sale price¥59,800

[11/2 22:00] Pakistani Peridot 5.0mm/0.517ct Loose Stone Sale price¥9,800

[11/2 22:00] Pakistani Peridot 5.2mm/0.562ct Loose Stone Sale price¥9,800

[On Sale 11/2 at 10pm] Zimbabwean Sphene 4.7mm/0.400ct Loose Stone Sale price¥9,800

[11/1 22:00 Sale] Tibetan Andesine 0.738ct Loose Stone Sale price¥15,800

[11/3 22:00 Sale] Unheated Ruby 4.5mm/0.430ct Loose GIT Sale price¥98,000

メキシコ産ファイアオパール（ファセットカット） 5.0mm/0.309ctルース

[12557608] Mexican Fire Opal (Faceted) 0.309ct Loose Sale price¥19,800

[12557569] Oregon Sunstone from the United States, 0.754ct Loose Sale price¥18,800

[12557558] Brazilian Rubellite 0.595ct Loose Stone Sale price¥9,800

[On Sale 11/7 at 10pm] Madagascar Apatite 6.0mm/0.901ct Loose Stone Sale price¥9,800

[On Sale at 10 PM on October 27th] Brazilian Citrine 5.4mm/0.769ct Loose Stone Sale price¥6,980

ロシア産デマントイドガーネット（ホーステール認む） 3.8mm/0.280ctルース

[On Sale 11/5 at 10 PM] Russian Demantoid Garnet (Horsetail Certified) 3.8mm/0.280ct Loose Stone Sale price¥49,800

[On Sale 11/3 at 10pm] Russian Alexandrite 2.8mm/0.111ct Loose Stone Sale price¥69,800

[11/3 22:00] Russian Alexandrite 2/5mm/0.070ct Loose Stone Sale price¥59,800

[11/1 22:00 Sale] Brazilian London Blue Topaz 1.281ct Loose Sale price¥12,800

[12557701] Rhodolite Garnet 0.703ct Loose Stone Sale price¥12,800

[On Sale at 10:00 PM on October 28th] Madagascar Blue Apatite 7.2mm/1.572ct Loose Stone Sale price¥8,800

[On Sale at 10pm on 10/22] Indian Iolite Sunstone 0.228ct Loose Sale price¥6,980

[On Sale at 10 PM on October 25th] Brazilian Rutile Quartz (Rutiled Quartz) 12mm/5.333ct Loose Stone Sale price¥9,800

[On Sale 10/23 10pm] Russian Demantoid Garnet (Horsetail Certified) 3.8mm/0.255ct Loose Stone Sale price¥39,800

[On Sale at 10 PM on 10/23] Brazilian Blue Topaz 5.5mm/0.754ct Loose Stone Sale price¥5,980

[10/12 22:00 Sale] Cassiterite 4.2mm/0.676ct Loose Stone with Certificate of Authenticity Sale price¥16,800

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

[On Sale at 10 PM on October 20th] Tanzanian Bicolor Zoisite 5.5mm/0.703ct Loose Stone Sale price¥12,800

[10/16 22:00 Sale] Russian Demantoid Garnet (Horsetail Certified) 2.5mm/0.079ct Loose Stone Sale price¥12,800

[10/16 22:00 Sale] Russian Demantoid Garnet (Horsetail Certified) 2.5mm/0.075ct Loose Stone Sale price¥12,800

ロシア産デマントイドガーネット（ホーステール認む） 2.5mm/0.073ctルース

[On Sale at 10 PM on October 25th] Russian Demantoid Garnet (Horsetail Certified) 2.5mm/0.073ct Loose Stone Sale price¥14,800

[12560897] Russian Demantoid Garnet (Horsetail) 0.128ct Loose Stone Sale price¥39,800

[On Sale at 10 PM on October 19th] Greenland Ruby 3.6mm/0.220ct Loose Stone with Certificate Sale price¥39,800

[On Sale at 10 PM on October 19th] Greenland Ruby 3.6mm/0.210ct Loose Stone with Certificate Sale price¥45,800

[On Sale at 10 PM on October 19th] Greenland Ruby 3.0mm/0.134ct Loose Stone with Certificate Sale price¥25,800

[10/10 22:00 Sale] Mozambique Almandine Garnet 7.7mm/1.781ct Loose Stone Sale price¥18,800

[On Sale at 10 PM on October 9th] Tanzanian Dragon Garnet 5.0mm/0.767ct Loose Stone Sale price¥19,800

[On Sale at 10 PM on October 4th] Blue Sapphire 4.1mm/0.332ct Loose Sale price¥25,800

[On sale at 10pm on September 30th] Blue sapphire 0.291ct loose stone Sale price¥18,800

[On Sale at 10 PM on September 30th] Russian Chrome Diopside 1.365ct Loose Stone Sale price¥15,800

[September 20th, 10 PM Sale] Synthetic Alexandrite 5.7mm/0.827ct Loose Stone Sale price¥19,800

[On Sale at 10 PM on September 25th] Spanish Sphalerite 6.5mm/1.375ct Loose Stone Sale price¥19,800

タンザニア産アンデシン・ラブラドライト（通称名ブルームーンストーン） 0.726ctルース

[Available at 10 PM on September 9th] [Dandelion Cut] Tanzanian Andesine Labradorite (also known as Blue Moonstone) 6.0mm/0.726ct Loose Stone Sale price¥49,800

[On Sale at 10 PM on September 16th] Brazilian Indigolite Tourmaline 4.0mm/0.240ct Loose Stone with Certificate of Authenticity Sale price¥29,800

[Sold at 10 PM on September 19th] Blue Sapphire 4.0mm/0.314ct Loose Sale price¥112,800

[On Sale at 10 PM on September 19th] Tanzanian Dragon Garnet 0.829ct Loose Stone Sale price¥22,800

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 August 31st] Paraiba Tourmaline from Mozambique, 3.5mm/0.172ct Loose Stone Sale price¥15,800

[On Sale at 10 PM on September 3rd] Paraiba Tourmaline from Mozambique, 3.2mm/0.119ct Loose Stone Sale price¥9,800

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.