Under 1.0 ct

Pakistani Peridot 5.2mm/0.562ct Loose Stone Sale price¥9,800

[#202607AkihabaraPop-upExhibition][12563418Posted] Burmese Ruby 0.303ct Loose Sale price¥9,800

Brazilian Euclase 0.224ct Loose Stone (Bicolor Euclase) Sale price¥18,800

Synthetic Alexandrite 0.578ct loose stone Sale price¥9,800

Brazilian Euclase 0.213ct loose stone (bicolor Euclase) Sale price¥12,800

【9/1 10 PM Release】Colombian Emerald 0.123ct Loose Gemstone Sale price¥18,800

[Available 9/1 at 10 PM] Tanzanian Tsavorite 0.366ct Loose Stone Sale price¥13,800

[Available 9/1 at 10 PM] Afghan Mint Color Tourmaline 0.290ct Loose Stone Sale price¥14,800

[9/2, 10 PM release] Madagascar Padparadscha Sapphire 0.497ct Loose Stone, DGL Certified Sale price¥69,800

[9/2 10 PM Sale] Madagascar Sapphirine 0.166ct Loose Gemstone with Identification Report Sale price¥13,800

[On sale 9/1 at 22:00] Pigeon Blood Ruby 0.350ct Loose Stone AIGS Sale price¥49,800

[Available 9/2, 10:00 PM] Pigeon Blood Ruby 0.325ct Loose Stone, JTL Certified Sale price¥69,800

[Available 9/2 at 10 PM] Mahenge Spinel (Pink Spinel) from Tanzania, 0.366ct Loose Stone, with Identification Report Sale price¥39,800

[Available 8/31, 10 PM] Pakistani Axinite (Blue Tint) 0.263ct Loose Gemstone Sale price¥18,800

[On sale 9/3 at 22:00] Sri Lankan Purple Sapphire 0.556ct Loose Gemstone with Identification Report Sale price¥55,800

【Available 9/3 at 10:00 PM】 Sri Lankan Purple Sapphire 0.376ct Loose Stone with Appraisal Report Sale price¥35,800

[Available 9/3, 10 PM] Sri Lankan Purple Sapphire 0.258ct Loose Gemstone with Identification Report Sale price¥25,800

[9/3 10:00 PM Sale] Synthetic Rutile 3.8mm/0.278ct Loose Gemstone Sale price¥8,800

【Available Sept 3, 10:00 PM】YAG (Yttrium Aluminum Garnet) 5.7mm/0.992ct Loose Stone Sale price¥12,800

[Available 9/3 at 10 PM] Brazilian Montebrasite 4.0mm/0.251ct Loose Stone Sale price¥8,800

[Available 9/3, 10 PM] Turkish Diaspore 0.410ct Loose Stone Sale price¥9,800

[Available 9/3, 10 PM] Brazilian Rhodonite in Quartz 0.438ct Loose Stone Sale price¥8,800

[On sale 9/3 at 10:00 PM] Brazilian Rhodonite in Quartz 6.2mm/0.600ct Loose Stone Sale price¥9,800

【Available 9/3, 10:00 PM】 Sri Lankan Blue Sapphire 0.451ct Loose Gemstone with Appraisal Report Sale price¥29,800

Russian rough diamond (sawable) 0.101ct loose Sale price¥22,800

[Posted as 12563267] Rough Botswana Diamond (Sawable) 0.140ct Sale price¥44,800

[Listed as 12563354] Jeremejevite from Namibia, 0.103ct Loose Stone Sale price¥25,800

[Featured in 12563725] Sri Lankan Pink Sapphire 0.319ct Loose Sale price¥29,800

[Sales begin August 24 at 10 PM JST] 0.830ct Red Coral Loose Stone from Kochi Prefecture Sale price¥9,800

[Sales begin 8/24 22:00] Kochi Prefecture Produced Deep Red Coral 0.984ct Loose Stone Sale price¥9,800

[On sale August 24th at 10 PM] Kochi Prefecture Blood Coral 0.939ct Loose Stone Sale price¥9,800

【Sales start 8/24 10 PM JST】Brazilian Strawberry Quartz 5.9mm/0.830ct Loose Stone Sale price¥6,980

[Sale starts August 25th at 10 PM JST] Madagascar Pezzottaite 2.7mm/0.062ct Loose Gemstone Sale price¥11,000

【Sale starts 8/25 10 PM JST】Synthetic Rutile 0.344ct Loose Gemstone Sale price¥8,800

[On sale August 25th, 10 PM] Ruby 0.168ct Loose Stone Sale price¥11,800

[On sale August 25th at 10 PM] Ruby loose stone, 0.268ct Sale price¥15,800

[Sale on August 27th at 10 PM] Synthetic Rutile 0.566ct Loose Stone Sale price¥9,800

[On sale August 27th at 10 PM JST] Russian Demantoid Garnet (Horsetail inclusion visible) 3.8mm/0.280ct Loose Sale price¥59,800

【Sales start: August 22nd, 10 PM JST】Tanzanian Mint Garnet 0.238ct Loose Stone Sale price¥12,800

[On sale August 22nd, 10 PM JST] Brazilian pink tourmaline 4.9mm/0.400ct loose stone, Hōki Kyō Sale price¥15,800

[On sale August 22, 10 PM] Bi-Color Grossular Garnet from Kenya 0.278ct Loose Sale price¥12,800

【Sales start 8/22 10 PM JST】Bicolor Grossular Garnet from Kenya 0.906ct Loose Stone Sale price¥39,800

[On sale August 23rd at 10 PM] US Oregon Sunstone 6.0mm/ 0.729ct Loose Sale price¥18,800

[On sale August 27th at 10 PM] Sri Lankan green sapphire 0.354ct loose stone with certificate Sale price¥12,800

[On sale August 27th at 10 PM] Tanzanian spinel, 0.644ct loose stone (with needle inclusions) with a gemological report Sale price¥19,800

[On sale August 27 at 10 PM] Tanzanian Spinel 0.536ct Loose (with needle inclusions) - with appraisal report Sale price¥15,800

【12563130 Posted】 Nigerian CobaltGahnite 0.176ct Loose Sale price¥24,800

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.