1.0ct - 2.0ct

[Oct 8, 10 PM Release] Brazilian Color-Shift Amethyst 7.7mm/1.607ct Loose Stone Sale price¥9,800

[Available Oct 5, 10:00 PM] Malawi Moonstone 1.640ct Loose Stone Sale price¥9,800

[10/5 10 PM Sale] Malawi Moonstone 1.886ct Loose Stone Sale price¥11,800

[Deadline: Sat, Sep 5, 10:00 AM: Lottery Sale_09] Sri Lankan Unheated Color-Change Sapphire 1.170ct Loose Stone, GIA certified Sale price¥188,000

[Item 12564350] Ethiopian Sunstone 1.228ct Loose Gemstone Sale price¥18,800

[On sale 9/30 at 22:00] Malawi Moonstone 1.388ct Loose Stone Sale price¥8,800

[Available 9/26 at 10 PM] Malawi Moonstone Loose Gemstone 1.966ct Sale price¥11,800

[Available 9/30 at 10 PM] Nepal Kyanite 1.216ct Loose Gemstone (Royal Blue Color) Sale price¥15,800

[9/27 10:00 PM Release] Oregon Sunstone (USA) 6.9mm/1.093ct Loose Gemstone Sale price¥29,800

[9/27 10:00 PM Release] Oregon Sunstone (USA) 6.9mm/1.094ct Loose Gemstone Sale price¥39,800

[Available 10/9 at 10 PM] Mongolian Andesine 7.0mm/1.236ct Loose Gemstone Sale price¥12,800

[Available 9/23 at 10:00 PM] Sri Lankan Moonstone 1.440ct Loose Gemstone Sale price¥15,800

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） 1.742ctルース

Andesine-Labradorite (commonly known as Rainbow Moonstone) from Madagascar, 1.742ct loose gemstone Sale price¥37,800

[9/18 10:00 PM Release] Brazilian Dendritic Agate 1.056ct Loose Stone Sale price¥3,980

[Sales start 9/18 at 22:00] Zimbabwe Bicolor Euclase 1.355ct Rough Stone Sale price¥25,800

[Available 9/19 at 10 PM] Oregon Sunstone 1.002ct Loose Gemstone Sale price¥6,980

[Available 9/19 at 10 PM] Brazilian Lavender Quartz (Skorolite) 1.154ct Loose Gemstone Sale price¥8,800

[Available 9/19 at 10:00 PM] 1.645ct Colombian Emerald Rough Stone Sale price¥49,800

[Available 9/23 at 10 PM] Tanzanian Almandine Garnet 1.267ct Loose Gemstone Sale price¥14,800

[Available 9/27 at 10 PM] Brazilian Bicolor Topaz 1.932ct Loose Stone Sale price¥19,800

Brazilian Rubellite 1.027ct Loose Stone Sale price¥69,800

Elbaite tourmaline from Mozambique 1.192ct loose stone (CuO: 0.1%, MnO: 1.5%) Sale price¥55,800

Tanzanian Zoisite 1.000ct Loose Stone Sale price¥18,800

YAG (Yttrium Aluminum Garnet) 6.5mm/1.551ct Loose Stone Sale price¥15,800

YAG (Yttrium Aluminum Garnet) 7mm/1.686ct Loose Stone Sale price¥12,800

【202608GIA Appraisal Request】【On Sale June 5th, 10 PM】Russian Demantoid Garnet (with horsetail inclusion) 6.8mm/1.366ct Loose Stone with Appraisal Report Sale price¥458,000

[Available 9/11 at 10 PM] Almandine Garnet from Tanzania, 1.354ct Loose Gemstone Sale price¥15,800

[Available 9/11 at 10:00 PM] Mexican Fire Opal (faceted cut) 1.255ct loose stone Sale price¥49,800

[Available 10/9, 10 PM] Sri Lankan Green Zircon 1.113ct Loose Gemstone Sale price¥9,800

[Available 9/13, 10:00 PM] Brazilian Rhodonite in Quartz 1.125ct Loose Stone Sale price¥9,800

[Available 10/14 at 22:00] Madagascar Sphene 6.8mm/1.363ct Loose Gemstone with Appraisal Report Sale price¥19,800

[Lottery Sale 0812_19] Bolivian Phosphophyllite 1.806ct Loose Stone with Gemstone Identification Report Sale price¥69,800

[Lottery Sale 0718_05] Unheated Australian Teal Blue Sapphire 1.010 ct Loose GIA Sale price¥128,000

1.953ct Bicolor Sphalerite from Spain Sale price¥18,800

Brazilian Lepidocrocite in Quartz 1.126ct Loose Stone Sale price¥9,800

Indian Cavansite 1.171ct loose stone Sale price¥8,800

Mozambique Pink Tourmaline 1.122ct Loose Stone (Contains CuO) Sale price¥39,800

【12551314掲載】ジンバブエ産ブルーアパタイト（UVタイプ） 1.019ctルース

Zimbabwean Blue Apatite (UV Type) 1.019ct Loose Sale price¥8,800

Cassiterite 1.658ct loose stone (bicolor cassiterite) Japan-Germany exchange Sale price¥98,000

[Lottery Sale ②_9][Winners Only][Listing 12563396] Brazil Rutile (Single Crystal) 1.474ct Loose Stone with Certification Sale price¥39,800

[Lottery Sale ②_202608_07] Myanmar Orange Spinel 0.855ct Loose Stone Sale price¥98,000

Zimbabwean Blue Apatite (UV type) 1.056ct loose stone Sale price¥9,800

【Available from 10 PM on 9/4】 Cambodian Blue Zircon 1.173ct Loose Stone Sale price¥15,800

[Available 9/4 at 10 PM] Brazilian Elestial Amethyst 1.855ct Loose Stone Sale price¥8,800

[Available 9/6 at 10 PM] Moonstone from Uva, Sri Lanka, 1.155ct loose stone Sale price¥18,800

[Available 9/6 at 10 PM] Moonstone from Uva, Sri Lanka, 1.418ct Loose Gemstone Sale price¥22,800

【9/14 10:00 PM Release】 Sri Lankan Uva Moonstone 1.172ct Loose Stone Sale price¥15,800

[Available 9/14, 10 PM] Moonstone from Uva, Sri Lanka, 1.196ct Loose Gemstone Sale price¥16,800

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.