Round Cut

coming soon

【10/10 22時販売】ブラジル産ダルメシアンクォーツ 9.2mm/1.711ctルース Sale price¥9,800

【9/28 22時販売】インターナリーフローレスダイヤモンド（H&C） 3.8mm/0.208ctルース(G, IF, 3Excellent H&C) Sale price¥69,800

[12559786] Blue sapphire 0.332ct loose stone Sale price¥25,800

[12559785] Blue sapphire 0.291ct loose stone Sale price¥18,800

[12559574] Chrome Diopside 1.365ct Loose Stone Sale price¥15,800

[12559361] Tanzanian Bicolor Zoisite 1.006ct Loose Stone Sale price¥55,800

[12559360] Tanzanian Bicolor Zoisite 1.327ct Loose Stone Sale price¥59,800

[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 5.6mm/0.896ct Loose Stone Sale price¥14,800

[On Sale at 10 PM on September 25th] Spanish Sphalerite 5.7mm/0.955ct Loose Stone Sale price¥15,800

[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

coming soon

【12560379掲載】シベリアンブルークォーツ（合成クォーツ） 0.984ctルース

[12560379] Siberian Blue Quartz (Synthetic Quartz) 0.984ct Loose Stone Sale price¥45,800

[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

[On Sale at 10 PM on August 28th] Congo Pink Tourmaline 6.0mm/0.825ct Loose Stone Sale price¥29,800

[On Sale at 10 PM on September 5th] Congo Pink Tourmaline 5.9mm/0.798ct Loose Stone Sale price¥25,800

[On Sale at 10 PM on September 1st] Congo Pink Tourmaline 5.0mm/0.463ct Loose Stone Sale price¥24,800

[On Sale at 10 PM on September 6th] Brazilian Elestial Amethyst 7.6mm/1.461ct Loose Stone Sale price¥9,800

[Dandelion Cut] Madagascar Sphene 6.0mm/0.935ct Loose Stone Sale price¥55,800

Dandelion Cut Andalusite from Spain, 6.0mm/0.835ct Loose Stone Sale price¥55,800

[On sale at 10pm on September 6th] Russian emerald 0.269ct loose stone Sale price¥79,800

[12560244] Bicolor Zoisite 0.508ct Loose Stone Sale price¥7,980

[Available at 10 PM on August 24th] Colombian Mint Emerald 4.1mm/0.244ct Loose Stone Sale price¥8,800

[Available at 10 PM on August 24th] Colombian Mint Emerald 4.3mm/0.306ct Loose Stone Sale price¥8,800

[Available at 10 PM on August 24th] Brazilian Mint-Colored Emerald, 5.5mm/0.638ct Loose Sale price¥8,800

[Available at 10 PM on August 24th] Myanmar Leuco Garnet 4.0mm/0.371ct Loose Stone Sale price¥39,800

[Available at 10 PM on August 16th] Tanzanian Purple Zoisite 4.0mm/0.262ct Loose Stone with Certificate of Authenticity Sale price¥11,000

[Sale at 10 PM on August 11th] [Sakura In-Cut] Spanish Andalusite 6.0mm/0.715ct Loose Stone Sale price¥59,800

[On Sale at 10 PM on August 9th] Zimbabwean Sphene 4.1mm/0.294ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 9th] Zimbabwean Sphene 4.0mm/0.287ct Loose Stone Sale price¥6,980

[Available at 10 PM on August 9th] Zimbabwean Sphene 4.0mm/0.276ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on September 9th] Mexican Fire Opal (Faceted) 5.5mm/0.447ct Loose Sale price¥12,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.416ctルース

[Available at 10 PM on August 22nd] Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 5.1mm/0.416ct Loose Stone Sale price¥15,800

[Available at 10 PM on August 22nd] Indian Moonstone 6.2mm/0.810ct Loose Sale price¥8,800

[Available at 10 PM on August 22nd] Indian Moonstone 6.2mm/0.775ct Loose Sale price¥7,980

[On sale from 10pm on August 7th] Kunzite from Afghanistan 3.108ct loose stone Sale price¥15,800

[On Sale at 10pm on August 10th] Australian Prehnite 5.5mm/0.538ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 12th] Zimbabwean Sphene 4.5mm/0.398ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 17th] Tanzanian Rhodolite Garnet 4.5mm/0.394ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 9th] Tanzanian Rhodolite Garnet 0.380ct Loose Stone Sale price¥5,980

[On Sale at 10 PM on August 9th] Tanzanian Rhodolite Garnet 0.370ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 9th] Tanzanian Rhodolite Garnet 0.336ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 9th] American Peridot 5.1mm/0.566ct 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.