Ruth

Sri Lankan Yellow Sapphire 0.349ct Loose Sale price¥12,800

Synthetic Moissanite 5.8mm/0.678ct Loose Stone Sale price¥8,800

Brazilian Green Tourmaline 0.825ct Loose Stone Sale price¥9,800

Brazilian Green Tourmaline 0.376ct Loose Stone Sale price¥7,980

Brazilian Green Tourmaline 0.332ct Loose Stone Sale price¥7,980

ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 0.344ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 0.344ct Loose Stone Sale price¥9,800

Tanzania Bicolor Zoisite 4.6mm/0.489ct Loose Stone Sale price¥9,800

Tanzania Bicolor Zoisite 4.8mm/0.540ct Loose Stone Sale price¥9,800

[On sale June 17th at 10 PM] Indian Parrot Chrysoberyl Cat's Eye 0.792ct Loose Stone Sale price¥29,800

【On sale June 26th, 10 PM JST】Indian Parrot Chrysoberyl 0.518ct Loose Gemstone Sale price¥29,800

[On Sale June 28th at 10 PM] Limited to 10 Stones: Brazilian Mint-Color Montebrasite (Princess Cut approx. 3.5mm) - 1 Loose Stone (Volume Discount Available) Sale price¥3,980

[Sales start 10 PM on 6/26] Limited to 30 sets: 1 in 10 is a pair of 2 stones - Zambian emerald loose stone (approx. 6x4mm, emerald cut) with deep color. (Multiple purchase discount available) Sale price¥7,980

Limited to 6 stones: 1 loose pink spinel from Mahenge, Tanzania (round cut, 3.0mm) Discounts for multiple purchases Sale price¥4,980

Kyanite from Nepal, 1 loose stone (indigo blue color, 4 x 6 mm, emerald cut) {Multiple purchase discount available} Sale price¥2,980

Tanzanite from Tanzania 0.497ct loose stone Sale price¥9,800

Tanzania Bicolor Zoisite 4.7mm/0.486ct Loose Stone Sale price¥9,800

Tanzanite from Tanzania 0.245ct loose stone Sale price¥8,800

Tanzania Bicolor Zoisite 0.295ct Loose Stone Sale price¥7,980

Tanzanite from Tanzania 0.385ct loose stone Sale price¥8,800

Tanzania Bicolor Zoisite 0.286ct Loose Stone Sale price¥7,980

Australian black opal 3.242ct loose stone Sale price¥59,800

Synthetic Moissanite 0.634ct loose stone Sale price¥9,800

Almandine Garnet 1.471ct Loose Stone Sale price¥14,800

Almandine Garnet 1.388ct Loose Stone Sale price¥11,800

Almandine Garnet 1.988ct Loose Stone Sale price¥16,800

Almandine Garnet 1.485ct Loose Stone Sale price¥15,800

Almandine Garnet 1.058ct Loose Stone Sale price¥12,800

Blue sapphire 0.287ct loose Sale price¥12,800

非加熱ブラジル産パライバトルマリン 0.060ctルース（CuO:1.6%、MnO:2.3%）

Brazilian Paraiba Tourmaline 0.060ct Loose (CuO:1.6%, MnO:2.3%) Sale price¥42,800

非加熱ブラジル産パライバトルマリン 0.068ctルース（CuO:1.7%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.068ct loose stone (CuO: 1.7%, MnO: 2.4%) Sale price¥45,800

Russian Diamond Rough (Sawable) 0.103ct Loose (Trigon) Sale price¥25,800

Tanzanian Rhodolite Garnet 0.448ct Loose Stone Sale price¥6,980

Tanzanian Rhodolite Garnet 0.810ct Loose Stone Sale price¥9,800

Tanzanian Kornerupine Cat's Eye 1.608ct Loose Stone Sale price¥6,980

American Herkimer Diamond (Rock Crystal) 5.5mm/0.528ct Loose Sale price¥8,800

Goshenite 5.7mm/0.572ct loose stone Sale price¥5,980

Indian Moonstone 8mm/1.879ct Loose Sale price¥6,980

[On sale 7/4 10 PM] Madagascar Padparadscha Sapphire 0.221ct Loose Stone with Central Gem Lab certificate Sale price¥38,800

[On Sale June 27th, 10 PM] Madagascar Padparadscha Sapphire 0.186ct Loose Stone - Central Gemological Laboratory Sale price¥25,800

【On Sale June 27, 10 PM】Madagascar Padparadscha Sapphire 3.4mm/0.252ct Loose Stone - Central Gem Laboratory Sale price¥45,800

Padparadscha Sapphire 0.560ct Loose Stone Sale price¥75,800

[On sale June 27th, 10 PM JST] Brazilian Lazulite 0.022ct Loose Stone with Certificate Sale price¥18,800

[Sale on 6/27 at 10 PM] Brazilian Lazulite (Lazulite) 0.067ct Loose Stone with Certificate Sale price¥49,800

[Sales start June 30th at 10 PM] Brazilian Lazulite 0.061ct Loose Stone with Gemstone Identification Report Sale price¥45,800

[On sale June 28 at 10 PM JST] 1.134ct Loose Sri Lankan Ice Blue Sapphire with Gemstone Certificate Sale price¥45,800

[On Sale June 28th at 10 PM] Afghan Green Hauyne 0.135ct Loose Stone with Certificate Sale price¥35,800

【Sale starts July 6th at 10 PM JST】Madagascar Pezzottaite 0.323ct Loose Stone Sale price¥49,800

[Sale on July 6th at 10 PM] Brazilian Silky Alexandrite Loose Stone 0.265ct with Certificate Sale price¥45,800

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.