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[Available at 10 PM on January 31st] [Limited Stock] Dominican Republic Conch Pearl & Shell Gacha Loose Stone, Including Rare Semi-White and Flame Patterns [Multiple Purchase Discounts Available] Sale price¥3,980

[Available at 10 PM on January 1st] [Limited to 15 stones] Japanese Polishing Artisan Gacha 💎 Koshu Precious Stone Cut Glass, Shimizu Precious Stone, Polished by Takeshi Yamamoto [Multiple purchase discounts available] Sale price¥4,980

[Available at 10 PM on January 25th] Limited to 12 stones: Sakura in-cut and Lepidocrocite in-quartz gacha set (1 loose stone) [Multiple purchase discounts available] Sale price¥3,580

[Available at 10 PM on January 30th] Limited to 6 Silky Pink Sapphires from Vietnam (Sanjay Cut, Round, 3.0-3.3mm) Gacha [Multiple Purchase Discounts Available] Sale price¥5,980

[Available at 10 PM on January 24th] Limited to 18 stones: Golden Hill Turquoise from Kazakhstan (December birthstone, average 1.3 carats) [Multiple purchase discounts available] Sale price¥2,980

[Limited to 24 stones] Oregon Sunstone from America with beautiful Schiller (Oval cut, 5 x 7mm) [Multiple purchase discount available] Sale price¥7,980

[On Sale at 10 PM on January 9th] Sri Lankan Twin Star Sapphire 3.928ct Loose Sale price¥128,000

[On Sale at 10 PM on January 9th] Sri Lankan Triple Star Sapphire 1.743ct Loose Sale price¥128,000

[On Sale at 10 PM on January 9th] Sri Lankan Twin Star Sapphire 5.225ct Loose Sale price¥98,000

[1/11 22:00 Sale] Brazilian Dumortierite in Quartz 0.382ct Loose Stone Sale price¥9,800

[1/11 22:00 Sale] Brazilian Blue Tourmaline 0.827ct Loose Stone Sale price¥19,800

[On Sale at 10 PM on January 11th] Myanmar Color Change Zircon 5.3mm/1.043ct Loose Stone Sale price¥69,800

[1/11 22:00 Sale] Brazilian Green Tourmaline 4.345ct Loose Stone Sale price¥69,800

[1/11 22:00 Sale] Tanzanite from Tanzania 2.777ct Loose Stone Sale price¥98,000

[On Sale at 10 PM on January 11th] Mozambique Ruby 0.544ct Loose Stone with Certificate of Authenticity Sale price¥39,800

[On Sale at 10 PM on January 12th] Mozambique Ruby 0.481ct Loose Stone with Certificate of Authenticity Sale price¥39,800

Sold out

[On Sale at 10 PM on January 12th] 0.245ct Rough Diamond (with Trigon)

[1/12 22:00 Sale] Diamond 0.604ct Rough Stone Sale price¥12,800

[On sale at 10pm on 1/12] Diamond rough (makeable) 0.204ct rough Sale price¥39,800

[On Sale at 10 PM on January 12th] 0.466ct Sawable Diamond Rough Stone (with Trigon) Sale price¥98,000

[On sale at 10 PM on January 12th] [Takeshi Yamamoto] Brazilian Dendritic Quartz 25.875ct Loose Stone Sale price¥29,800

[On Sale at 10 PM on January 11th] Myanmar Color Change Zircon 0.697ct Loose Sale price¥39,800

[Available at 10 PM on January 12th] K18/Pt950 Brazilian Paraiba Tourmaline and Diamond Pendant (Necklace) Sale price¥89,800

[On Sale at 10 PM on January 12th] 18K Yellow Gold Brazilian Paraiba Tourmaline 0.048ct Diamond Pinky Ring (CuO: 1.7%, MnO: 2.2%) Sale price¥98,000

[Sale at 10 PM on January 12th] [Sakura In-Cut] Tanzanite from Tanzania, 6.0mm/0.774ct Loose Stone Sale price¥69,800

[On Sale at 10 PM on January 14th] American Benitoite 0.257ct Loose Stone Sale price¥158,000

[On Sale at 10 PM on January 14th] Brazilian Bicolor Topaz (Bicolor Blue Topaz) 2.884ct Loose Stone (Untreated) Sale price¥29,800

[On Sale at 10 PM on January 14th] Afghanistan Kunzite 23.634ct Loose Stone Sale price¥98,000

[On Sale at 10 PM on January 14th] Zimbabwean Euclase 0.138ct Loose Stone Sale price¥39,800

Synthetic rutile 5.8mm/0.904ct loose stone Sale price¥12,800

Synthetic rutile 5mm/0.553ct loose stone Sale price¥12,800

Morganite from Nigeria 0.889ct loose Sale price¥4,980

Paraiba tourmaline from Brazil 0.066ct loose Sale price¥18,800

Mexican Water Opal 1.790ct Loose (Contralus Opal) Sale price¥29,800

Paraiba tourmaline from Mozambique 0.270ct loose Sale price¥18,800

Cambodian Blue Zircon 0.609ct Loose Sale price¥5,980

Synthetic moissanite (gray blue) 1.701ct loose Sale price¥12,800

Cambodian Blue Zircon 0.221ct Loose Sale price¥3,980

Cambodian Blue Zircon 0.204ct Loose Sale price¥3,980

Cambodian Blue Zircon 0.205ct Loose Sale price¥3,980

Diamond 0.120ct loose (G, VS2, Excellent H&C) Sale price¥25,800

American red beryl 0.141ct loose Sale price¥14,800

American red beryl 0.208ct loose Sale price¥22,800

American red beryl 0.115ct loose Sale price¥12,800

American red beryl 0.143ct loose Sale price¥15,800

Sphene from Madagascar 0.498ct loose Sale price¥6,980

[On Sale at 10 PM on January 17th] Cornflower Blue Sapphire 0.680ct Loose Stone AIGS Sale price¥128,000

Mangano tantalite from Afghanistan 0.233ct loose Sale price¥39,800

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.