Round Cut

Padparadscha sapphire 0.200ct loose Sale price¥29,800

[Available at 10 PM on August 16th] Tanzanian Purple Zoisite 4.0mm/0.262ct Loose Stone with Certificate of Authenticity Sale price¥11,000

[On Sale at 10 PM on August 16th] Unheated Padparadscha Sapphire 3.9mm/0.290ct Loose GIA Sale price¥55,800

ダイヤモンド（H&C） 3.8mm/0.208ctルース(G, IF, 3Excellent H&C)

[Available from 10 PM on August 11th] 3.8mm/0.208ct Internally Flawless Diamond (H&C) Loose Stone (G, IF, 3 Excellent H&C) Sale price¥69,800

[Sale at 10 PM on August 11th] [Sakura In-Cut] Spanish Andalusite 6.0mm/0.715ct Loose Stone Sale price¥59,800

[On Sale at 10 PM on August 9th] Zimbabwean Sphene 4.1mm/0.294ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 9th] Zimbabwean Sphene 4.0mm/0.287ct Loose Stone Sale price¥6,980

[Available at 10 PM on August 9th] Zimbabwean Sphene 4.0mm/0.276ct Loose Stone Sale price¥6,980

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） 0.416ctルース

[Available at 10 PM on August 22nd] Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 5.1mm/0.416ct Loose Stone Sale price¥15,800

[Available at 10 PM on August 22nd] Indian Moonstone 6.2mm/0.810ct Loose Sale price¥8,800

[Available at 10 PM on August 22nd] Indian Moonstone 6.2mm/0.775ct Loose Sale price¥7,980

[On sale from 10pm on August 7th] Kunzite from Afghanistan 3.108ct loose stone Sale price¥15,800

[On Sale at 10pm on August 10th] Australian Prehnite 5.5mm/0.538ct Loose Stone Sale price¥6,980

[8/12 22:00 Sale] Brazilian London Blue Topaz 0.579ct Loose Sale price¥6,980

[On Sale at 10 PM on August 12th] Zimbabwean Sphene 4.5mm/0.398ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 12th] Zimbabwean Sphene 4.3mm/0.367ct Loose Stone Sale price¥8,800

[On Sale at 10 PM on August 12th] Zimbabwean Sphene 4.5mm/0.364ct Loose Stone Sale price¥8,800

[Available at 10 PM on August 20th] Chameleon Diamond 3.6mm/0.202ct Loose Stone (FANCY LIGHT GRAYISH GREEN YELLOW, I1) Sale price¥35,800

ピンクダイヤモンド 0.043ctルース(FANCY INTENSE PURPLISH PINK, I1)

[Available at 10 PM on August 20th] Pink Diamond 2.2mm/0.043ct Loose (FANCY INTENSE PURPLISH PINK, I1) Sale price¥79,800

[On Sale at 10 PM on August 17th] Tanzanian Rhodolite Garnet 4.5mm/0.394ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 9th] Tanzanian Rhodolite Garnet 0.380ct Loose Stone Sale price¥5,980

[On Sale at 10 PM on August 9th] Tanzanian Rhodolite Garnet 0.370ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 9th] Tanzanian Rhodolite Garnet 0.336ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 9th] American Peridot 5.1mm/0.566ct Loose Stone Sale price¥9,800

[On Sale at 10 PM on August 4th] American Peridot 5.0mm/0.511ct Loose Stone Sale price¥9,800

[On Sale at 10 PM on August 9th] American Peridot 4.9mm/0.488ct Loose Stone Sale price¥8,800

[On Sale at 10 PM on August 17th] American Peridot 4.5mm/0.370ct Loose Stone Sale price¥8,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.708ct Loose Stone Sale price¥15,800

ピンクダイヤモンド 0.037ctルース(FANCY INTENSE PURPLE PINK, SI2)

[On Sale at 10 PM on August 20th] Pink Diamond 0.037ct Loose (FANCY INTENSE PURPLE PINK, SI2) Sale price¥59,800

Tanzanian Rhodolite Garnet 4.8mm/0.579ct Loose Stone, Japan-Germany Exchange Sale price¥12,800

Brazilian Paraiba Tourmaline in Quartz 6mm/0.684ct Loose Stone Sale price¥15,800

Mexican Hyalite Opal 6.0mm/0.708ct Loose Sale price¥25,800

German Awinite 3.5mm/0.158ct loose stone Sale price¥98,000

イエローベリル 2.227ctルース【さくらインカット】ブラジル産イエローベリル 9.1mm/2.227ctルース

[7/4 22:00 Sale] [Sakura Incut] Brazilian Yellow Beryl 9.1mm/2.227ct Loose Sale price¥29,800

Myanmar Red Spinel 3.5mm/0.182ct Loose Stone Sale price¥8,800

Oregon Sunstone from the United States 8.0mm/1.835ct loose stone Sale price¥22,800

Zimbabwe Bicolor Euclase 3.5mm/0.192ct Loose Stone Sale price¥39,800

Zimbabwe Bicolor Euclase 3.0mm/0.108ct Loose Stone Sale price¥22,800

ブルーダイヤモンド（トリートメント） 0.139ctルース(Fancy Greenish Blue, SI1)

Ice Blue Diamond (Treatment) 3.2mm/0.139ct Loose (Fancy Greenish Blue, SI1) Sale price¥22,800

ブルーダイヤモンド（トリートメント） 0.095ctルース(Fancy Greenish Blue, SI1)

Ice Blue Diamond (Treatment) 2.8mm/0.095ct Loose (Fancy Greenish Blue, SI1) Sale price¥19,800

Brazilian Green Spodumene 9.0mm/2.271ct Loose Stone Sale price¥12,800

Brazilian Green Spodumene 9.0mm/2.747ct Loose Stone Sale price¥18,800

Blue sapphire 0.466ct loose stone Sale price¥12,800

Madagascar Purple Spinel 5.2mm/0.651ct Loose Stone Sale price¥8,800

Oligoclase Sunstone 15mm/10.593ct Loose Sale price¥15,800

American Benitoite 3.1mm/0.129ct loose stone Sale price¥59,800

Spanish Sphalerite 5.6mm/0.956ct loose stone Sale price¥14,800

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 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.