Vertical: 5.1 - 6.0mm

[On sale July 12th, 10 PM JST] Colombian Emerald, 0.191 ct loose stone, Hoki Kyokai Sale price¥45,800

[Available July 11, 10 PM JST] Kenya Bi-Color Grossular Garnet 0.809 ct Loose Stone Sale price¥25,800

[Lottery Sale_0612_01] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.542ct Loose Sale price¥55,800

【Sales start at 10 PM on July 3rd (JST)】Bicolor Grossular Garnet from Tanzania 0.602ct Loose Gemstone Sale price¥16,800

[On sale July 9th at 10 PM JST] Tanzanian Bicolor Grossular Garnet 0.787ct Loose Stone Sale price¥19,800

[On sale July 4, 10 PM] 0.416 ct Loose Mozambique Ruby with Certificate Sale price¥29,800

インターナリーフローレスダイヤモンド（H&C） 5.1mm/0.527ctルース(E, IF, 3Excellent H&C)

[Lottery Sale 0530_06] Internally Flawless Diamond (H&C) 0.527ct Loose Stone (E, IF, 3Excellent H&C) Sale price¥228,000

Brazilian Euclase 0.695ct Loose Stone Sale price¥18,800

Brazilian Paraiba Tourmaline 0.360ct Loose GIA Sale price¥298,000

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

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

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

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

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

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

Tanzanian Rhodolite Garnet 0.448ct 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

Zimbabwean Blue Apatite (UV Type) 0.650ct Loose Sale price¥9,800

Nigerian bicolor tourmaline 0.379ct loose stone Sale price¥6,980

Madagascar sapphire 0.448ct loose stone Sale price¥15,800

[Sale begins June 26th, 10 PM JST] Sri Lankan Silky Sapphire 5.1mm/0.488ct Loose Rose Cut Gemstone Sale price¥7,980

[Sale Date: June 26th, 10 PM JST] Brazilian Medusa Quartz (Paraiba Quartz) 5.4mm/0.479ct Loose Stone (Rose Cut) Sale price¥12,800

[On sale June 22nd at 10 PM JST] Madagascar Canary Yellow Chrysoberyl 0.650ct Loose Stone with Appraisal Sale price¥18,800

[On sale June 26th at 10 PM] Madagascar Canary Yellow Chrysoberyl 0.569ct Loose Gemstone with Certificate Sale price¥9,800

Vietnam Aquamarine 0.494ct Loose Stone Sale price¥8,800

Brazilian Paraiba Tourmaline 0.341ct loose stone (CuO:1.81%, MnO:1.96%) Nakahokan analysis report Sale price¥598,000

【Sales start: June 15, 10 PM JST】Almandine Garnet from Tanzania 0.938ct Loose Stone Sale price¥12,800

Mozambique Ruby 0.544ct Loose Stone with Certificate of Authenticity Sale price¥39,800

[Sale June 16th, 10 PM] Myanmar Red Spinel 0.453ct Loose Stone Sale price¥19,800

[On sale June 14, 10 PM JST] Brazilian Canary Yellow Chrysoberyl 0.672 ct Loose Gemstone Sale price¥18,800

【On sale June 14, 10 PM】Spanish Andalusite 0.416ct Loose Stone Sale price¥9,800

[Sales begin 10 PM on June 21] Sri Lankan Chrysoberyl Cat's Eye 0.798ct Loose Sale price¥12,800

[On sale June 17th, 10 PM] Tanzanian Tanzanite 0.372ct Loose Stone Sale price¥14,800

Mica in Quartz 0.758ct Loose Stone Sale price¥5,980

Myanmar Violet Spinel 0.426ct Loose Sale price¥8,800

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） 0.585ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.585ct loose stone Sale price¥12,800

Bicolor tourmaline 0.429ct loose Sale price¥5,980

Bicolor Tourmaline 0.378ct Loose Stone (Hexagonal Cut) Sale price¥8,800

Pink tourmaline 0.539ct loose stone (heart shape) Sale price¥9,800

[Sale 10 PM JST, June 7] Alexandrite from Odisha, India 0.764 ct Loose Stone with Certificate Sale price¥29,800

[On sale June 7th at 10 PM] India Odisha Alexandrite 0.759ct Loose Gemstone with Identification Report Sale price¥22,800

[On sale 6/5 at 10 PM] Russian Demantoid Garnet (horsetail inclusion visible) 5.8mm/0.876ct Loose Stone with Appraisal Report Sale price¥258,000

[On sale May 31 at 10 PM] Myanmar Musgravite 0.351ct Loose Gemstone, Japan-Germany Sale price¥128,000

[On sale May 31st at 10 PM] Malawi Bicolor Zircon (Malawi Zircon) 0.985 ct Loose Sale price¥39,800

Pink tourmaline 0.845ct loose stone Sale price¥12,800

Yellow Opal 0.372ct Loose (Faceted Cut) Sale price¥8,800

Madagascar Blue Sapphire 0.302ct Loose Sale price¥15,800

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.