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オーストラリア産ボルダーオパール 12.216ctルース

[On sale June 7, 10 PM JST] Australian Boulder Opal 12.216ct Loose Stone Sale price¥15,800
オーストラリア産ボルダーオパール 41.775ctルース

[On sale June 7th at 10 PM] Australian Boulder Opal 41.775ct Loose Stone Sale price¥19,800
ブラジル産グリーンベリル 1.022ctルース

[On Sale May 16th, 10 PM JST] Brazilian Emerald Cat's Eye 1.022ct Loose Stone with Certification Sale price¥12,800
ブラジル産エメラルドキャッツアイ0.459ctルース

[On Sale May 16th, 10 PM JST] Brazilian Emerald Cat's Eye 0.459 ct Loose Gemstone with Certificate Sale price¥9,800
ブラジル産グリーンベリル 0.559ctルース

[For sale on May 16th at 10 PM] Brazilian Emerald Cat's Eye 0.559ct Loose Stone with Appraisal Report Sale price¥9,800
アクアマリン 68.040ctルース

[On sale 5/16 10 PM JST] Brazilian Aquamarine 68.088ct Loose Stone with Appraisal Sale price¥39,800
[For Sale 10:00 PM May 16th] Brazilian Paraiba Tourmaline 0.035ct Loose Stone (CuO: 1.6%, MnO: 3.3%)

[For Sale 10:00 PM May 16th] Brazilian Paraiba Tourmaline 0.035ct Loose Stone (CuO: 1.6%, MnO: 3.3%) Sale price¥29,800
[On sale May 16, 10 PM JST] Brazilian Paraiba Tourmaline 0.039ct Loose Stone (CuO:1.6%, MnO:2.9%)

[On sale May 16, 10 PM JST] Brazilian Paraiba Tourmaline 0.039ct Loose Stone (CuO:1.6%, MnO:2.9%) Sale price¥35,800
[On sale May 17th, 10 PM JST] Brazilian Paraiba Tourmaline 0.050ct Loose Stone (CuO: 1.9%, MnO: 3.6%)

[On sale May 17th, 10 PM JST] Brazilian Paraiba Tourmaline 0.050ct Loose Stone (CuO: 1.9%, MnO: 3.6%) Sale price¥39,800
[On sale May 17th, 10 PM] Brazilian Paraiba Tourmaline 0.035ct Loose Stone (CuO: 2.4%, MnO: 2.5%)

[On sale May 17th, 10 PM] Brazilian Paraiba Tourmaline 0.035ct Loose Stone (CuO: 2.4%, MnO: 2.5%) Sale price¥29,800
ブラジル産パライバトルマリン 0.036ctルース

[On sale May 17th at 10 PM JST] Brazilian Paraiba Tourmaline 0.036ct Loose Stone (CuO: 1.6%, MnO: 3.1%) Sale price¥14,800
ブラジル産パライバトルマリン 0.038ctルース

[On sale May 17th at 10 PM] Brazilian Paraiba Tourmaline 0.037ct Loose Stone (CuO:1.4%, MnO:2.6%) Sale price¥25,800
[Sale on 5/17 at 10 PM] Brazilian Paraiba Tourmaline 0.038ct Loose Stone (CuO: 1.6%, MnO: 2.8%)

[Sale on 5/17 at 10 PM] Brazilian Paraiba Tourmaline 0.038ct Loose Stone (CuO: 1.6%, MnO: 2.8%) Sale price¥45,800
ブラジル産パライバトルマリン 0.043ctルース

【Sales start at 10 PM on May 17th】Brazilian Paraiba Tourmaline 0.041ct Loose Stone (CuO:1.9%, MnO:4.3%) Sale price¥39,800
[On sale May 17th at 10 PM] Brazilian Paraiba Tourmaline 0.038ct Loose Stone (CuO: 1.3%, MnO: 2.7%)

[On sale May 17th at 10 PM] Brazilian Paraiba Tourmaline 0.038ct Loose Stone (CuO: 1.3%, MnO: 2.7%) Sale price¥35,800
ブラジル産ロマネサイトインアメジスト 7.083ctルース

Brazilian Romanesite in Amethyst 7.083ct Loose Stone Sale price¥15,800
コロンビア産エメラルド 0.512ctルース

Colombian emerald 0.512ct loose stone (silky type) Sale price¥12,800
ブラジル産インディゴライトトルマリン 1.247ctルース

Brazilian Indigolite Tourmaline 1.247ct Loose Stone, Japan-Germany Exchange Sale price¥98,000
コロンビア産エメラルド 0.145ctルース

Colombian emerald 0.145ct loose stone with precious stone Sale price¥29,800
メキシコ産オパール 1.666ctルース

Mexican Opal 1.666ct Loose Sale price¥14,800
オーストラリア産ブラックオパール 0.650ctルース

Australian black opal 0.650ct loose Sale price¥15,800
Sri Lankan Blue Sapphire (Ice Blue) 0.584ct Loose

Sri Lankan Blue Sapphire (Ice Blue) 0.584ct Loose Sale price¥8,800
ピンクトルマリン 1.157ctルース

Pink tourmaline 1.157ct loose stone Sale price¥12,800
ロシア産デマントイドガーネットキャッツアイ（ホーステール認む） 0.200ctルース

Russian Demantoid Garnet Cat's Eye (Horsetail Recognized) 0.200ct Loose Sale price¥18,800
非加熱ブラジル産パライバトルマリン 0.050ctルース

[On sale May 20th at 10 PM] Unheated Color Change Brazilian Paraiba Tourmaline 0.050ct Loose Stone GIA Sale price¥128,000
ブラジル産インペリアルトパーズ 3.999ctルース

[On sale May 20 at 10 PM] Brazilian Imperial Topaz 3.999 ct Loose Stone with Certificate Sale price¥188,000
K18 血赤珊瑚 ペンダントトップ（ネックレストップ）

[Available 5/23 10 PM] Colorful K18 Blood Coral 9.9mm Diamond Pendant Top (Necklace Top) with Certificate of Authenticity Sale price¥158,000
パキスタン産カイヤナイト 0.764ctルース

[On sale June 7th at 10 PM] Nepal Green Kyanite 0.764ct Loose Stone Sale price¥6,980
Sold out [On sale June 8th, 10 PM JST] "Limited to 12 Stones" Garnet Gacha with 8mm Dandelion Cut Rhodolite Garnet (Normally 39,800 yen) "Multiple Purchase Discount Available"

[On sale June 8th, 10 PM JST] "Limited to 12 Stones" Garnet Gacha with 8mm Dandelion Cut Rhodolite Garnet (Normally 39,800 yen) "Multiple Purchase Discount Available"
Sold out Swiss Blue Topaz 1 stone (10 x 8mm, special cut)《Discount available for multiple purchases》

Swiss Blue Topaz 1 stone (10 x 8mm, special cut)《Discount available for multiple purchases》

Sold out Swiss blue topaz 1 stone (9.5 x 8mm, special cut)《Multiple purchase discount available》

Swiss blue topaz 1 stone (9.5 x 8mm, special cut)《Multiple purchase discount available》

Sold out コロンビア産エメラルドキャッツアイ1石ルース（平均0.35ct)《初めての方向け》

Colombian emerald cat's eye 1 stone loose (average 0.35ct)《For first-time users》《Multiple purchase discount available》

Sold out Gem Gacha💎1 special fluorescent diamond (VS-SI class equivalent, 2.0mm)

Gem Gacha💎1 special fluorescent diamond (VS-SI class equivalent, 2.0mm)

Sold out Russian demantoid garnet (2mm, round cut) 1 stone (discount available for multiple purchases)

Russian demantoid garnet (2mm, round cut) 1 stone (discount available for multiple purchases)

Sold out Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available)

Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available)
Sold out Limited to 15 stones, 1 loose Australian iron opal stone, multiple purchase discounts available

Limited to 15 stones, 1 loose Australian iron opal stone, multiple purchase discounts available
Sold out [Limited to 8 stones] Jam Gacha💎 1 Rainbow Garnet stone (January birthstone) from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]

[Limited to 8 stones] Jam Gacha💎 1 Rainbow Garnet stone (January birthstone) from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]
Sold out Gemstone Gacha💎 1 of the Three Great Gemstones Gacha + 2 Loose Pink Sapphires (Multiple Purchase Discounts Available)

Gemstone Gacha💎 1 of the Three Great Gemstones Gacha + 2 Loose Pink Sapphires (Multiple Purchase Discounts Available)
Sold out Tanzanian Bicolor Grossular Garnet (1 loose stone, average 0.55 carats) (Multiple purchase discounts available)

Tanzanian Bicolor Grossular Garnet (1 loose stone, average 0.55 carats) (Multiple purchase discounts available)

Sold out Mini Kite Cut Loose Stone (Includes 2 Paraiba Tourmalines, Green Beryl, Ruby, Peridot, etc.) {Multiple Purchase Discounts Available}

Mini Kite Cut Loose Stone (Includes 2 Paraiba Tourmalines, Green Beryl, Ruby, Peridot, etc.) {Multiple Purchase Discounts Available}

Sold out Limited Edition of 11 Rare Stones! 💎 Two 0.23ct Paraiba Tourmalines from Batalha, Brazil, a Pink Diamond, and a Benitoite Loose Stone. Discounts available for multiple purchases.

Limited Edition of 11 Rare Stones! 💎 Two 0.23ct Paraiba Tourmalines from Batalha, Brazil, a Pink Diamond, and a Benitoite Loose Stone. Discounts available for multiple purchases.
Sold out Limited Edition of 10 Bicolor Gacha! 💎 Includes two Zimbabwean euclase stones (average 0.088ct), a 1.03ct bicolor sapphire, a bicolor chrysoberyl, and more. Discounts available for multiple purchases.

Limited Edition of 10 Bicolor Gacha! 💎 Includes two Zimbabwean euclase stones (average 0.088ct), a 1.03ct bicolor sapphire, a bicolor chrysoberyl, and more. Discounts available for multiple purchases.
Sold out Limited to 8 stones: 1 loose Brazilian ametrine (concave cut, average 10 carats) Multiple purchase discounts available

Limited to 8 stones: 1 loose Brazilian ametrine (concave cut, average 10 carats) Multiple purchase discounts available
Sold out Limited to 10 stones! Rare Stone Gacha! 💎 Shinsha, Zimbabwean Euclase, Red Beryl, Star Peridot, and more. Multi-buy discounts available.

Limited to 10 stones! Rare Stone Gacha! 💎 Shinsha, Zimbabwean Euclase, Red Beryl, Star Peridot, and more. Multi-buy discounts available.
Sold out Limited to 11 stones: Bicolor Gacha (including Zimbabwean bicolor euclase, bicolor sapphire, and bicolor zoisite) (Multiple purchase discounts available)

Limited to 11 stones: Bicolor Gacha (including Zimbabwean bicolor euclase, bicolor sapphire, and bicolor zoisite) (Multiple purchase discounts available)
Sold out Blue Stone Gacha💎 (Brazilian Paraiba Tourmaline, Mozambique Paraiba Tourmaline, German Auchenite, Benitoite) {Multiple Purchase Discounts Available}

Blue Stone Gacha💎 (Brazilian Paraiba Tourmaline, Mozambique Paraiba Tourmaline, German Auchenite, Benitoite) {Multiple Purchase Discounts Available}
Sold out Brazilian Paraiba Tourmaline (CuO: 2.3% and CuO: 1.4%) & Kornerupine Rough Gacha 《Multiple Purchase Discount Available》

Brazilian Paraiba Tourmaline (CuO: 2.3% and CuO: 1.4%) & Kornerupine Rough Gacha 《Multiple Purchase Discount Available》

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.