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タンザニア産アルマンディンガーネット 1.282ctルース

[11/29 22:00 Sale] Tanzanian Almandine Garnet 1.282ct Loose Stone Sale price¥13,800
グリーンランド産ルビー 0.253ctルース

[On Sale 11/29 10pm] Greenland Ruby 0.253ct Loose Stone with Certificate Sale price¥49,800
タンザニア産アルマンディンガーネット 2.697ctルース

[11/29 22:00] Tanzanian Almandine Garnet 2.697ct Loose Stone Sale price¥18,800
グリーンランド産ルビー 0.266ctルース

[On Sale 11/29 10pm] Greenland Ruby 0.266ct Loose Stone with Certificate Sale price¥22,800
タンザニア産アルマンディンガーネット 0.750ctルース

[11/29 22:00 Sale] Tanzanian Almandine Garnet 0.750ct Loose Stone Sale price¥9,800
コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.093ctルース

Colombian trapiche emerald (reverse trapiche) 0.093ct loose Sale price¥7,980
アフガニスタン産ブルートルマリン 0.326ctルース

Blue tourmaline from Afghanistan 4.5mm/0.326ct loose Sale price¥7,980
コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.170ctルース

Colombian trapiche emerald (reverse trapiche) 0.170ct loose Sale price¥12,800
マダガスカル産スフェーン 1.864ctルース

[12/1 22:00 Sale] Madagascar Sphene 1.864ct Loose Stone Sale price¥45,800
Felspar 2.993ct loose from Sri Lanka

Felspar 2.993ct loose from Sri Lanka Sale price¥6,980
コロンビア産パイライトインエメラルド 4.592ctルース

Colombian pyrite in emerald 4.592ct loose Sale price¥110,000
カラーチェンジサファイア 0.946ctルース

Color change sapphire 0.946ct loose Sale price¥29,800
タンザニア産アルマンディンガーネット 1.164ctルース

[12/2 22:00] Tanzanian Almandine Garnet 1.164ct Loose Stone Sale price¥12,800
タンザニア産アルマンディンガーネット 0.930ctルース

[12/2 22:00] Tanzanian Almandine Garnet 0.930ct Loose Stone Sale price¥9,800
グリーンランド産サファイア 0.133ctルース

[12/2 22:00] Greenland Sapphire 0.133ct Loose Stone with Certificate Sale price¥14,800
[12/15 22:00 Sale] Tanzanian Rhodolite Garnet 1.935ct Loose Stone with Certificate of Authenticity

[12/15 22:00 Sale] Tanzanian Rhodolite Garnet 1.935ct Loose Stone with Certificate of Authenticity Sale price¥18,800
[12/15 22:00] Tanzanian Almandine Garnet 6.4mm/1.271ct Loose Stone

[12/15 22:00] Tanzanian Almandine Garnet 6.4mm/1.271ct Loose Stone Sale price¥12,800
[12/15 22:00 Sale] Synthetic Rutile 5.1mm/0.893ct Loose Stone

[12/15 22:00 Sale] Synthetic Rutile 5.1mm/0.893ct Loose Stone Sale price¥9,800
[12/15 22:00] Tanzanian Almandine Garnet 11.0mm/6.787ct Loose Stone

[12/15 22:00] Tanzanian Almandine Garnet 11.0mm/6.787ct Loose Stone Sale price¥49,800
[12/17 22:00 Sale] Chinese Cinnabar 0.615ct Loose Stone (Faceted)

[12/17 22:00 Sale] Chinese Cinnabar 0.615ct Loose Stone (Faceted) Sale price¥18,800
Synthetic rutile 0.538ct loose stone

Synthetic rutile 0.538ct loose stone Sale price¥9,800
Sold out Limited to 10 stones: Pakistani oil-in-quartz with moving bubbles, single loose stone. Discounts available for multiple purchases.

Limited to 10 stones: Pakistani oil-in-quartz with moving bubbles, single loose stone. Discounts available for multiple purchases.
Sold out Set of 2 Tanzanite stones from Tanzania (2mm, round cut) {Multiple purchase discount available}

Set of 2 Tanzanite stones from Tanzania (2mm, round cut) {Multiple purchase discount available}
Sold out Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available}

Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available}
Sold out [Jeweler's Tools] {3 sets remaining} 3-piece set: Jewelry loupe (14x magnification), blue diamond, and pink tourmaline or sapphire

[Jeweler's Tools] {3 sets remaining} 3-piece set: Jewelry loupe (14x magnification), blue diamond, and pink tourmaline or sapphire
Sold out Limited to 21 stones: 1 loose stone of Spanish sphalerite (faceted cut, average 0.60ct) Multiple purchase discounts available

Limited to 21 stones: 1 loose stone of Spanish sphalerite (faceted cut, average 0.60ct) Multiple purchase discounts available
Sold out Top Quality: Brazilian Alexandrite 1 Stone Loose (2.0mm, Hematita Mine) Multiple Purchase Discounts Available

Top Quality: Brazilian Alexandrite 1 Stone Loose (2.0mm, Hematita Mine) Multiple Purchase Discounts Available
Sold out 18K Yellow Gold Curb Chain Necklace, 1.0mm/1.6g, 40cm

18K Yellow Gold Curb Chain Necklace, 1.0mm/1.6g, 40cm
Sold out [On sale November 3rd at 10pm] Win two unheated royal blue sapphires (with AIGS certificate) in the Blue Sapphire Lottery (Multiple purchase discounts available)

[On sale November 3rd at 10pm] Win two unheated royal blue sapphires (with AIGS certificate) in the Blue Sapphire Lottery (Multiple purchase discounts available)
Sold out Limited to 25 stones: Brazilian Paraiba Tourmaline (including bicolor, Batalha) rough stones, average size 0.1ct. Discounts for multiple purchases available.

Limited to 25 stones: Brazilian Paraiba Tourmaline (including bicolor, Batalha) rough stones, average size 0.1ct. Discounts for multiple purchases available.
Sold out Limited to 14 stones: 1 loose sphalerite stone from Spain (average 0.55 carats) Multiple purchase discounts available

Limited to 14 stones: 1 loose sphalerite stone from Spain (average 0.55 carats) Multiple purchase discounts available
Sold out Limited to 20 stones, Brazilian dendritic quartz, 1 loose stone, multiple purchase discounts available

Limited to 20 stones, Brazilian dendritic quartz, 1 loose stone, multiple purchase discounts available
Sold out Ruby Lottery: Win a 0.59ct Pigeon Blood Ruby with AIGS or a Burmese Star Ruby (Multiple Purchase Discounts Available)

Ruby Lottery: Win a 0.59ct Pigeon Blood Ruby with AIGS or a Burmese Star Ruby (Multiple Purchase Discounts Available)
Sold out Limited to 15 stones Apatite Gacha💎 Zimbabwean apatite, purple apatite, etc. 1 loose stone (with defects) Multiple purchase discounts available

Limited to 15 stones Apatite Gacha💎 Zimbabwean apatite, purple apatite, etc. 1 loose stone (with defects) Multiple purchase discounts available
Sold out 【12/7 22時販売】《限定15石》レアストーンガチャ💎ブラジル産パライバトルマリン0.200ct（CuO:0.7%,MnO:4.0%）・シンシャ（鑑別書付き1.487ct）・ターフェアイト0.241ct ほか《複数購入割引有》

【12/7 22時販売】《限定15石》レアストーンガチャ💎ブラジル産パライバトルマリン0.200ct（CuO:0.7%,MnO:4.0%）・シンシャ（鑑別書付き1.487ct）・ターフェアイト0.241ct ほか《複数購入割引有》
Sold out Brazilian London Blue Topaz 1 Stone Loose (6mm, Round Cut) {Multiple Purchase Discounts Available}

Brazilian London Blue Topaz 1 Stone Loose (6mm, Round Cut) {Multiple Purchase Discounts Available}
Sold out Limited to 10 stones: 1 London blue diamond loose (VS-SI class equivalent, 1.8mm) Multiple purchase discounts available

Limited to 10 stones: 1 London blue diamond loose (VS-SI class equivalent, 1.8mm) Multiple purchase discounts available
Sold out [On Sale 12/21 10 PM] {Limited Remaining} Red Gemstone Gacha Including Pigeon Blood Ruby AIGS Worth ¥60,000 💎 Rubies and Hot Pink Sapphires {Multiple Purchase Discounts Available}

[On Sale 12/21 10 PM] {Limited Remaining} Red Gemstone Gacha Including Pigeon Blood Ruby AIGS Worth ¥60,000 💎 Rubies and Hot Pink Sapphires {Multiple Purchase Discounts Available}
Sold out [On sale from 10pm on 5/5] Limited to 11 stones Russian Demantoid Garnet (2-2.3mm, round cut, with horsetail) 1 stone [Multiple purchase discounts available]

[On sale from 10pm on 5/5] Limited to 11 stones Russian Demantoid Garnet (2-2.3mm, round cut, with horsetail) 1 stone [Multiple purchase discounts available]
Sold out Limited to 8 stones: 1 loose Brazilian rainbow aquamarine (pear-shaped) stone. Discounts available for multiple purchases.

Limited to 8 stones: 1 loose Brazilian rainbow aquamarine (pear-shaped) stone. Discounts available for multiple purchases.
Sold out Limited to 8 stones: One loose Brazilian rainbow aquamarine (average 0.9 carat, pear cut) [Multiple purchase discounts available]

Limited to 8 stones: One loose Brazilian rainbow aquamarine (average 0.9 carat, pear cut) [Multiple purchase discounts available]
Sold out Limited Quantity Gem Gacha! Win 1 or 2 gems, including pink diamonds and 46ct candela opals. Discounts available for multiple purchases.

Limited Quantity Gem Gacha! Win 1 or 2 gems, including pink diamonds and 46ct candela opals. Discounts available for multiple purchases.
Sold out Only one left! Blue Sapphire Gacha Set Includes Two Unheated Royal Blue Sapphires (with AIGS Certificate) (Plus One Sapphire from the Teppanawa Mine) (Multiple Purchase Discounts Available)

Only one left! Blue Sapphire Gacha Set Includes Two Unheated Royal Blue Sapphires (with AIGS Certificate) (Plus One Sapphire from the Teppanawa Mine) (Multiple Purchase Discounts Available)
Sold out [On Sale November 1st at 10 PM] [Limited to 15 Stones] Rare Stone Gacha! 💎 Brazilian Paraiba Tourmaline 0.240ct, Taaffeite, Shinsha, Benitoite, and More [Multiple Purchase Discounts Available]

[On Sale November 1st at 10 PM] [Limited to 15 Stones] Rare Stone Gacha! 💎 Brazilian Paraiba Tourmaline 0.240ct, Taaffeite, Shinsha, Benitoite, and More [Multiple Purchase Discounts Available]
Sold out マダガスカル産パープルサファイア 0.562ctルース JTL鑑

Madagascar Purple Sapphire 0.562ct Loose JTL Catalog
Sold out メキシコ産ウォーターオパール 3.7mm/0.141ctルース

Mexican Water Opal 3.7mm/0.141ct Loose
Sold out 合成アレキサンドライト 0.561ctルース

Synthetic Alexandrite 0.561ct loose stone
Sold out ブラジル産アレキサンドライト 0.147ctルース（プリンセスカット）

Brazilian Alexandrite 0.147ct loose stone (princess cut)

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.