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カラーチェンジサファイア 0.401ctルース

Color change sapphire 0.401ct loose Sale price¥3,980
【サンジェ氏】レピドクロサイトインクォーツ 1.227ctルース

Lepidocrocite in Quartz 1.227ct Loose Stone Sale price¥9,800
レピドクロサイトインクォーツ 0.692ctルース

Lepidocrocite in quartz 0.692ct loose Sale price¥8,800
【サンジェ氏】アパタイト 0.763ctルース

Madagascar Apatite 0.763ct Loose Stone Sale price¥6,980
バイカラートルマリン 0.669ctルース（ローズカット）

Bicolor tourmaline 0.669ct loose (rose cut) Sale price¥8,800
バイカラートルマリン 0.549ctルース（ローズカット）

Bicolor tourmaline 0.549ct loose (rose cut) Sale price¥8,800
ローズクォーツ 18.410ctルース（パイナップルカット）

Rose quartz 18.410ct loose (pineapple cut) Sale price¥5,980
グリーンクォーツ 10.330ctルース（パイナップルカット）

Green quartz 10.330ct loose (pineapple cut) Sale price¥4,980
【12530558掲載】アンダリュサイト 0.480ctルース

Andalusite 5mm/0.480ct loose Sale price¥3,980
[On sale from 10/22 at 10 PM] Limited to 14 stones: Lab-grown diamond (cabochon cut, approximately 2.3mm) - 1 loose diamond [Multiple purchase discounts available]

[On sale from 10/22 at 10 PM] Limited to 14 stones: Lab-grown diamond (cabochon cut, approximately 2.3mm) - 1 loose diamond [Multiple purchase discounts available] Sale price¥4,980
[On sale 10/22 at 10 PM] Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]

[On sale 10/22 at 10 PM] Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available] Sale price¥2,980
[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available]

[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available] Sale price¥3,980
[On Sale 10/19 at 10 PM] [Limited to 10 stones] Spinel Gacha Loose Stone, Including 1.17ct Bicolor Spinel [Multiple Purchase Discounts Available]

[On Sale 10/19 at 10 PM] [Limited to 10 stones] Spinel Gacha Loose Stone, Including 1.17ct Bicolor Spinel [Multiple Purchase Discounts Available] Sale price¥4,980
[On sale 10/19 at 10 PM] {Limited to 10 stones} Paraiba Tourmaline Gacha 💎 Paraiba Tourmaline or Paraiba Tourmaline in Quartz (1 loose stone) {Multiple purchase discounts available}

[On sale 10/19 at 10 PM] {Limited to 10 stones} Paraiba Tourmaline Gacha 💎 Paraiba Tourmaline or Paraiba Tourmaline in Quartz (1 loose stone) {Multiple purchase discounts available} Sale price¥6,980
インド産アイオライトサンストーン 0.228ctルース

[On Sale at 10pm on 10/22] Indian Iolite Sunstone 0.228ct Loose Sale price¥6,980
インド産アイオライトサンストーン 0.321ctルース

[On Sale at 10pm on 10/22] Indian Iolite Sunstone 0.321ct Loose Sale price¥8,800
ブラジル産アメジスト 5.883ctルース

[On Sale at 10pm on 10/22] Brazilian Amethyst 5.883ct Loose Sale price¥9,800
メキシコ産オパール（ファセットカット） 0.242ctルース

[On Sale at 10 PM on October 25th] Mexican Opal (Faceted) 0.242ct Loose Sale price¥8,800
パキスタン産ルードヴィッヒアイトインペリドット 0.615ctルース

[On Sale at 10pm on 10/25] Pakistani Ludwigite Peridot 0.615ct Loose Stone Sale price¥7,980
ブラジル産ルチルクォーツ（ルチルレイテッドクォーツ） 5.333ctルース

[On Sale at 10 PM on October 25th] Brazilian Rutile Quartz (Rutiled Quartz) 12mm/5.333ct Loose Stone Sale price¥9,800
ドミニカ共和国産ラリマー 2.472ctルース

[On Sale at 10pm on October 25th] 2.472ct Larimar Loose Stone from the Dominican Republic Sale price¥6,980
ロシア産デマントイドガーネット（ホーステール認む） 0.064ctルース

[On Sale at 10 PM on October 23rd] Russian Demantoid Garnet (Horsetail Certified) 0.064ct Loose Stone Sale price¥9,800
ロシア産デマントイドガーネット（ホーステール認む） 0.061ctルース

[On Sale 10/23 10pm] Russian Demantoid Garnet (Horsetail Recognized) 0.061ct Loose Stone Sale price¥9,800
ロシア産デマントイドガーネット（ホーステール認む） 0.036ctルース

[On Sale at 10 PM on October 24th] Russian Demantoid Garnet (Horsetail Certified) 0.036ct Loose Stone Sale price¥6,980
ドミニカ共和国産ラリマー 2.568ctルース

[On Sale at 10pm on 10/23] 2.568ct Larimar Loose Stone from the Dominican Republic Sale price¥8,800
アクアマリン 0.334ctルース

[On Sale at 10pm on 10/23] Brazilian Aquamarine 0.334ct Loose Stone Sale price¥6,980
カラーシフトアメジスト 0.849ctルース

[On Sale at 10 PM on 10/23] Brazilian Color-Shifting Amethyst 0.849ct Loose Stone Sale price¥8,800
ブルートパーズ 0.754ctルース

[On Sale at 10 PM on 10/23] Brazilian Blue Topaz 5.5mm/0.754ct Loose Stone Sale price¥5,980
ロードライトガーネット 1.052ctルース

[On Sale at 10:00 PM on October 23rd] 1.052ct Rhodolite Garnet Loose Stone from Mozambique Sale price¥8,800
[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original random acrylic keychains

[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original random acrylic keychains Sale priceFrom ¥770
[Sales start at 10:00 PM on Friday, October 31st] New anime "Hell Teacher Nube" x KARATZ collaboration original acrylic stand

[Sales start at 10:00 PM on Friday, October 31st] New anime "Hell Teacher Nube" x KARATZ collaboration original acrylic stand Sale price¥1,650
[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original glitter tin badges

[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original glitter tin badges Sale price¥660
[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original clear postcard set

[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original clear postcard set Sale price¥660
[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original sticker set

[Sales start on Friday, October 31st at 10:00 PM] New anime "Hell Teacher Nube" x KARATZ collaboration original sticker set Sale price¥1,320
[On Sale 10/12 at 10 PM] [Limited to 15 stones] One loose, unheated silky pink sapphire from Vietnam (2.5mm, round cut) [Multiple purchase discounts available]

[On Sale 10/12 at 10 PM] [Limited to 15 stones] One loose, unheated silky pink sapphire from Vietnam (2.5mm, round cut) [Multiple purchase discounts available] Sale price¥3,980
[On Sale at 10 PM on October 12th] Limited to 14 stones: One loose hot pink sapphire from Mozambique (pear-shaped, approximately 4 x 3 mm) [Multiple purchase discounts available]

[On Sale at 10 PM on October 12th] Limited to 14 stones: One loose hot pink sapphire from Mozambique (pear-shaped, approximately 4 x 3 mm) [Multiple purchase discounts available] Sale price¥4,980
[4 stones left] Brazilian Dendritic Quartz Kitten Cut Loose Stone (For Beginners) (5mm) [Multiple purchase discounts available]

[4 stones left] Brazilian Dendritic Quartz Kitten Cut Loose Stone (For Beginners) (5mm) [Multiple purchase discounts available] Sale price¥3,980
[Available at 10:00 PM on October 12th] Limited Quantity: Myanmar Gray Spinel/Platinum Spinel (2.0mm, Round Cut) Loose Stone [Multiple Purchase Discounts Available]

[Available at 10:00 PM on October 12th] Limited Quantity: Myanmar Gray Spinel/Platinum Spinel (2.0mm, Round Cut) Loose Stone [Multiple Purchase Discounts Available] Sale price¥4,980
[On Sale at 10 PM on October 12th] [Limited to 7 stones] One loose, oil-free emerald from Russia (1.5-1.6mm, step cut) [Multiple purchase discounts available]

[On Sale at 10 PM on October 12th] [Limited to 7 stones] One loose, oil-free emerald from Russia (1.5-1.6mm, step cut) [Multiple purchase discounts available] Sale price¥5,980
スリランカ産スターサファイア 1.093ctルース

[10/12 22:00 Sale] Sri Lankan Star Sapphire 1.093ct Loose Sale price¥8,800
タンザニア産ペリステライト 0.503ctルース

[On Sale 10/18 10 PM] Tanzanian Peristerite 5.1mm/0.503ct Loose Stone (Rose Cut) Sale price¥9,800
タンザニア産ペリステライト 0.458ctルース

[On Sale 10/18 10 PM] Tanzanian Peristerite 5.1mm/0.458ct Loose Stone (Rose Cut) Sale price¥9,800
スペイン産バイカラースファレライト 0.727ctルース

[10/18 22:00 Sale] 0.727ct Bicolor Sphalerite Loose Stone from Spain Sale price¥9,800
オーストラリア産ボルダーオパール 1.457ctルース

[10/18 22:00 Sale] Australian Boulder Opal 1.457ct Loose Sale price¥9,800
ブラジル産ロンドンブルートパーズ 0.415ctルース

[10/18 22:00 Sale] Brazilian London Blue Topaz 0.415ct Loose Sale price¥6,980
奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.439ctルース

[On Sale at 10 PM on October 18th] Rainbow Garnet (Andradite Garnet) 0.439ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥8,800
ブラジル産モルガナイト 0.377ctルース

[10/17 22:00 Sale] Brazilian Morganite 0.377ct Loose Stone Sale price¥8,800
ブラジル産アクアマリン 0.428ctルース

[10/17 22:00 Sale] Brazilian Aquamarine 0.428ct Loose Stone Sale price¥8,800

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.