Today's new arrivals

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[10/12 22:00 Sale] Brazilian Paraiba Tourmaline 0.052ct Loose Stone Sale price¥29,800

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[10/12 22:00 Sale] Brazilian Unheated Pink Imperial Topaz (Sherry Pink) 0.231ct Loose Sale price¥18,800

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[10/12 22:00 Sale] Sri Lankan Star Sapphire 1.093ct Loose Sale price¥8,800

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[10/12 22:00 Sale] Cassiterite 4.2mm/0.676ct Loose Stone with Certificate of Authenticity Sale price¥16,800

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[10/12 22:00 Sale] Pigeon Blood Ruby 3.7mm/0.230ct Loose Stone AIGS Sale price¥39,800

coming soon

[10/12 22:00 Sale] Pakistani Veirinite 0.145ct Loose Stone with Certificate of Authenticity Sale price¥36,800

coming soon

ラボグロウンダイヤモンド（合成ダイヤモンド） 0.290ctルース(FANCY VIVID PINK, VS-2)

[On Sale at 10 PM on October 12th] Lab-Grown Diamond (Synthetic Diamond) 0.290ct Loose (FANCY VIVID PINK, VS-2) Sale price¥45,800

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[10/12 22:00 Sale] Unheated Royal Blue Sapphire 0.640ct Loose AIGS Sale price¥158,000

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[On Sale at 10 PM on October 12th] Russian Emerald 0.282ct Loose Stone (F1, Minor Enhancement) GIA Sale price¥128,000

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[On Sale at 10 PM on October 12th] Russian Emerald 0.387ct Loose Stone (F1, Minor Enhancement) GIA Sale price¥128,000

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【10/13 22時販売】K18YGマダガスカル産スフェーン 0.597ct ペンダントトップ（ネックレストップ） Sale price¥39,800

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【10/13 22時販売】モザンビーク産パライバトルマリン 1.309ctルース（酸化鉄インクルージョン含む） Sale price¥98,000

coming soon

[12560900] Russian Alexandrite 0.088ct Loose Stone Sale price¥59,800

coming soon

[12560899] Russian Alexandrite 0.058ct Loose Stone Sale price¥49,800

Sold out

[On Sale 10/10 at 10 PM] [Limited to 20 stones] Koshu Precious Stone Kiriko Plus Three: Includes two carefully cut Oregon Sunstones in the Loose Stone Gacha [Multiple purchase discounts available]

[On Sale 10/10 at 10 PM] [Limited to 8 stones] Mexican Hyalite Opal Loose Stone (Large 4ct, Fluorescent in sunlight) [Multiple purchase discounts available] Sale price¥4,980

[On sale from 10/10 at 10 PM] [Limited to 10 stones] Brazilian Bicolor Tourmaline Loose Stone (Baguette Cut) [Multiple purchase discounts available] Sale price¥3,980

Tanzanite from Tanzania 7.0mm/1.427ct loose stone Sale price¥55,800

[10/10 22:00 Sale] [Rouge Cut] Brazilian Dumortierite in Quartz 1.493ct Loose Stone Sale price¥9,800

[On Sale 10/10 at 10 PM] [Rouge Cut] Tanzanian Andesine Labradorite (also known as Rainbow Moonstone) 1.082ct Loose Stone Sale price¥15,800

[10/10 22:00 Sale] [Rouge Cut] Brazilian Dumortierite in Quartz 1.184ct Loose Stone Sale price¥14,800

[10/10 22:00 Sale] Mozambique Almandine Garnet 7.7mm/1.781ct Loose Stone Sale price¥18,800

[10/10 22:00 Sale] Mozambique Almandine Garnet 1.652ct Loose Stone Sale price¥15,800

[10/10 22:00 Sale] Mozambique Almandine Garnet 2.959ct Loose Stone Sale price¥19,800

[10/10 22:00 Sale] Brazilian Rubellite 4.078ct Loose Stone Sale price¥98,000

[On sale from 10/10 at 10pm] Illusion Tourmaline (Iridescent Tourmaline) 0.622ct Loose Stone Sale price¥19,800

[On Sale 10/10 at 10 PM] Tanzanian Sunstone (Illusion Sunstone) 0.627ct Loose Stone Sale price¥9,800

[10/10 22:00 Sale] Australian Opal 0.374ct Loose Sale price¥6,980

[10/10 22:00 Sale] Tanzanian Purple Sapphire 0.355ct Loose Sale price¥9,800

[10/10 22:00 Sale] Brazilian Petalite 1.197ct Loose Stone Sale price¥7,980

[10/10 22:00 Sale] Brazilian Petalite 0.725ct Loose Stone Sale price¥4,980

[10/10 22:00 Sale] Cambodian Colorless Zircon 0.905ct Loose Sale price¥9,800

[10/10 22:00 Sale] Indian Moonstone 9.3mm/2.693ct Loose Sale price¥9,800

[10/10 22:00 Sale] Cambodian Colorless Zircon 0.630ct Loose Sale price¥8,800

[On Sale at 10 PM on October 9th] Tanzanian Dragon Garnet 5.0mm/0.767ct Loose Stone Sale price¥19,800

[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 1.015ct Loose Stone Sale price¥29,800

[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 0.818ct Loose Stone Sale price¥22,800

[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 0.850ct Loose Stone Sale price¥22,800

[On Sale at 10pm on 10/9] Tanzanian Dragon Garnet 0.931ct Loose Stone Sale price¥25,800

[On sale from 10/9 at 10pm] Synthetic rutile 1.362ct loose stone Sale price¥15,800

[On Sale at 10pm on October 9th] Zimbabwean Sphene 0.726ct Loose Stone Sale price¥14,800

[On Sale at 10pm on October 9th] Zimbabwean Sphene 0.990ct Loose Stone Sale price¥12,800

[On Sale at 10pm on October 9th] Zimbabwean Sphene 1.028ct Loose Stone Sale price¥25,800

[On Sale at 10pm on October 8th] Afghanistan Hackmanite 0.121ct Loose Stone Sale price¥6,980

[On sale from 10/8 at 10pm] Zimbabwean sphene 0.704ct loose stone Sale price¥14,800

[On Sale at 10pm on October 8th] Afghanistan Hackmanite 0.134ct Loose Stone Sale price¥6,980

[10/10 22:00 Sale] Mexican Cantera Opal 1.120ct Loose Sale price¥8,800

[10/10 22:00 Sale] Brazilian Dalmatian Quartz 9.2mm/1.711ct Loose Stone Sale price¥9,800

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.