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Adult Sebonstar Jewelry Vol. 3: Adult Sebonstar Pendant Mirage Edition <silver model></silver>

Adult Sebonstar Jewelry Vol. 3: Adult Sebonstar Pendant Mirage Edition Sale priceFrom ¥29,800
Ice blue diamond 1.2mm or 2.0mm 1 stone (VS class equivalent, round cut) {Multiple purchase discount available}

Ice blue diamond 1.2mm or 2.0mm 1 stone (VS class equivalent, round cut) {Multiple purchase discount available} Sale priceFrom ¥4,980
Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available]

Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available] Sale priceFrom ¥1,580
"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Ginoza Nobuchika Model] "London Blue Topaz"

"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Ginoza Nobuchika Model] "London Blue Topaz" Sale priceFrom ¥25,800
【一律1000円】アメリカ産・ハーキマーダイヤモンド（ロッククリスタル）1石 原石

[Flat rate 1000 yen] 1 American Herkimer diamond (rock crystal) rough stone (discount available for multiple purchases) Sale price¥1,000
H&amp;C (Heart &amp; Cupid) Diamond 2.0mm Loose (VS Class, DG Class, 2mm Melee Diamonds) {Multiple Purchase Discounts Available}

H&C (Heart & Cupid) Diamond 2.0mm Loose (VS Class, DG Class, 2mm Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥7,980
"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Tsunemori Akane Model] (Pink Diamond)

"PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device-Inspired Ring with Inspector Design [Tsunemori Akane Model] (Pink Diamond) Sale priceFrom ¥29,800
1 stone of Brazilian blue tourmaline (3 x 4 mm pear shape/oval cut/3 x 5 mm pear shape/4 x 5 mm oval cut)《Discount available for multiple purchases》

1 stone of Brazilian blue tourmaline (3 x 4 mm pear shape/oval cut/3 x 5 mm pear shape/4 x 5 mm oval cut)《Discount available for multiple purchases》 Sale priceFrom ¥2,980
H&amp;C (Hearts &amp; Cupids) Diamond 1.2mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available}

H&C (Hearts & Cupids) Diamond 1.2mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥3,980
1 American Herkimer Diamond (rock crystal) 💎 (child-bearing type)《Multiple purchase discount available》

1 American Herkimer Diamond (rock crystal) 💎 (child-bearing type)《Multiple purchase discount available》 Sale price¥2,980
[Jeweler's Tools] 3-piece set: Jewelry Loupe (14x magnification), Blue Diamond, and Pink Tourmaline or Sapphire

[Jeweler's Tools] 3-piece set: Jewelry Loupe (14x magnification), Blue Diamond, and Pink Tourmaline or Sapphire Sale price¥3,980
Limited Edition Tucson Lucky Dip Gems 💎 Guaranteed 1 stone from 8 types (Benitoite, Anthill Garnet, Dumortierite in Quartz, Eudialyte, etc.) 《Multi-purchase discount available》

Limited Edition Tucson Lucky Dip Gems 💎 Guaranteed 1 stone from 8 types (Benitoite, Anthill Garnet, Dumortierite in Quartz, Eudialyte, etc.) 《Multi-purchase discount available》 Sale price¥3,980
H&C(ハート&キューピッド)ダイヤモンド1.2mmルース - カラッツSTORE

H&C (Hearts & Cupids) Diamond 1.5mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥4,980
グリーンダイヤモンド（トリートメント）1石（約1.3mm)

Green Diamond (Treatment) 1 stone (approx. 1.3mm)《Multiple purchase discount available》 Sale price¥3,580
クッションカットのブラジル産インペリアルトパーズ1石ルース（3mm）《複数購入割引有》

Cushion cut Brazilian imperial topaz 1 stone loose (3mm)《Multiple purchase discount available》 Sale price¥5,980
1 blue fluorescent diamond (H&amp;C, 3EX, VS-SI class equivalent, 2.0mm) {Multiple purchase discount available}

1 blue fluorescent diamond (H&C, 3EX, VS-SI class equivalent, 2.0mm) {Multiple purchase discount available} Sale price¥8,980
{For beginners} Gem gacha💎 1 loose gemstone (Chrome tourmaline, Mahenge spinel, etc.) cut by Sri Lankan craftsman Sanjay {Multiple purchase discounts available}

{For beginners} Gem gacha💎 1 loose gemstone (Chrome tourmaline, Mahenge spinel, etc.) cut by Sri Lankan craftsman Sanjay {Multiple purchase discounts available} Sale price¥3,980
Limited to 20 stones: Brazilian Paraiba tourmaline (cabochon cut, approximately 2.2 mm) [Multiple purchase discounts available]

Limited to 20 stones: Brazilian Paraiba tourmaline (cabochon cut, approximately 2.2 mm) [Multiple purchase discounts available] Sale price¥9,800
<<Limited to 18 Stones>> Golden Hill Turquoise from Kazakhstan (Turquoise, December Birthstone, Average 1.3ct) <<Multiple Purchase Discount Available>>

<> Golden Hill Turquoise from Kazakhstan (Turquoise, December Birthstone, Average 1.3ct) <> Sale price¥2,980
Diamond (Old Mine Cut) 1 Loose Stone {Multiple Purchase Discounts Available}

Diamond (Old Mine Cut) 1 Loose Stone {Multiple Purchase Discounts Available} Sale price¥4,980
《Limited to 15 stones》Synthetic Stone Gacha 💎 Includes a 1.02ct/D/VS-1/3EX certified lab-grown diamond, typically valued at 50,000 yen (plus a bonus synthetic cobalt spinel stone) 《Multi-purchase discounts available》

《Limited to 15 stones》Synthetic Stone Gacha 💎 Includes a 1.02ct/D/VS-1/3EX certified lab-grown diamond, typically valued at 50,000 yen (plus a bonus synthetic cobalt spinel stone) 《Multi-purchase discounts available》 Sale price¥5,980
【Sales start: August 11, 10 PM JST】《Limited 14 stones》Rare Stone Gacha featuring Leucogarnet, Cinnabar, Gahnite, and more!《Bulk Purchase Discount Available》

【Sales start: August 11, 10 PM JST】《Limited 14 stones》Rare Stone Gacha featuring Leucogarnet, Cinnabar, Gahnite, and more!《Bulk Purchase Discount Available》 Sale price¥7,980
Limited Quantity: Brazilian Yellow Danburite Loose Stone (Multiple Purchase Discounts Available)

Limited Quantity: Brazilian Yellow Danburite Loose Stone (Multiple Purchase Discounts Available) Sale price¥2,980
【10/3 22:00 Release】《15 stones limited》Illusion Tourmaline Gacha Loose Stone (3.0ct average) 《Multiple purchase discount available》

【10/3 22:00 Release】《15 stones limited》Illusion Tourmaline Gacha Loose Stone (3.0ct average) 《Multiple purchase discount available》 Sale price¥3,980
Limited to 20 Stones: Indicolite Tourmaline Gacha with 5 Stones & Certificate – 1 Loose Stone (Multiple Purchase Discount Available)

Limited to 20 Stones: Indicolite Tourmaline Gacha with 5 Stones & Certificate – 1 Loose Stone (Multiple Purchase Discount Available) Sale price¥3,980
Diamond loose/certificate transfer fee

Diamond loose/certificate transfer fee Sale price¥6,600
[Available Oct 9, 10 PM] 《Limited Quantity》 Cabochon-cut lab-grown diamond loose stone (1 piece, CVD/2.1-2.3mm) 《Multi-buy discount available》

[Available Oct 9, 10 PM] 《Limited Quantity》 Cabochon-cut lab-grown diamond loose stone (1 piece, CVD/2.1-2.3mm) 《Multi-buy discount available》 Sale priceFrom ¥4,580
宝石ガチャ💎バゲットカットのトルマリン1石💎4×2mm《複数購入割引有》

Gem gacha💎1 baguette cut tourmaline stone💎4×2mm《Discount available for multiple purchases》 Sale price¥1,980
"Limited to 14 stones" Fluorescent diamonds in rare colors such as white, orange, and green "Bulk purchase discounts available"

"Limited to 14 stones" Fluorescent diamonds in rare colors such as white, orange, and green "Bulk purchase discounts available" Sale price¥3,980
《Limited to 12 Stones》New Tucson Arrival: High-Quality Brazilian Dumortierite in Quartz (Faceted Cut)《Multiple Purchase Discount Available》

《Limited to 12 Stones》New Tucson Arrival: High-Quality Brazilian Dumortierite in Quartz (Faceted Cut)《Multiple Purchase Discount Available》 Sale price¥4,980
[Option] Paraiba Tourmaline component analysis sorting issuance fee

[Option] Paraiba Tourmaline component analysis sorting issuance fee Sale price¥5,000
【9/7 10:00 PM Sale】《Limited to 10 Stones》Diamond Gacha with a Chance to Win a Certified Diamond (All stones VS class or equivalent)《Multi-purchase discounts available》

【9/7 10:00 PM Sale】《Limited to 10 Stones》Diamond Gacha with a Chance to Win a Certified Diamond (All stones VS class or equivalent)《Multi-purchase discounts available》 Sale price¥3,980
Limited to 14 stones: Brazilian dendritic quartz loose stone (average 7 carats) Multiple purchase discounts available

Limited to 14 stones: Brazilian dendritic quartz loose stone (average 7 carats) Multiple purchase discounts available Sale price¥2,980
Diamond loose sorting transition fee

Diamond loose sorting transition fee Sale price¥3,000
《Limited to 11 Stones》Rouge Cut & Heart Shaped Gemstone Gacha Usually ¥18,800💎 Almandine Garnet, Pink Tourmaline, Scolite, Sapphire《Multiple Purchase Discount Available》

《Limited to 11 Stones》Rouge Cut & Heart Shaped Gemstone Gacha Usually ¥18,800💎 Almandine Garnet, Pink Tourmaline, Scolite, Sapphire《Multiple Purchase Discount Available》 Sale price¥4,980
Limited to 21 stones: 1 loose Tanzanite stone from Tanzania (5 x 3 mm, oval cut) Multiple purchase discounts available

Limited to 21 stones: 1 loose Tanzanite stone from Tanzania (5 x 3 mm, oval cut) Multiple purchase discounts available Sale price¥4,980
[Available 9/20 at 10 PM] Limited to 7 pieces: Brazilian Batalha Paraiba Tourmaline & Elbaite rough stone gacha, featuring bicolor Paraiba (CuO: 2.7%, MnO: 2.0%) usually priced at 25,800 yen (multi-purchase discounts available).

[Available 9/20 at 10 PM] Limited to 7 pieces: Brazilian Batalha Paraiba Tourmaline & Elbaite rough stone gacha, featuring bicolor Paraiba (CuO: 2.7%, MnO: 2.0%) usually priced at 25,800 yen (multi-purchase discounts available). Sale price¥6,980
New Arrival in Tucson - Limited to 5 Stones - Brazilian Limonite Topaz, Average 2.8cts (Multiple Purchase Discounts Available)

New Arrival in Tucson - Limited to 5 Stones - Brazilian Limonite Topaz, Average 2.8cts (Multiple Purchase Discounts Available) Sale price¥2,980
《Limited to 10 Stones》Diamond Gacha💎 with Gemstone Sorting (0.136ct/E/VVS-2/EXCELLENT/NONE (Heart & Cupid)) up for grabs 《Multiple purchase discount available》

《Limited to 10 Stones》Diamond Gacha💎 with Gemstone Sorting (0.136ct/E/VVS-2/EXCELLENT/NONE (Heart & Cupid)) up for grabs 《Multiple purchase discount available》 Sale price¥3,980
[9/22 10:00 PM Release] <limited to stones> 1 Imperial Topaz stone (includes Brazilian unheated sherry color) (comes with 1 London Blue Topaz stone) - Regular price 22,800 yen <multiple purchase discount available></multiple></limited>

[9/22 10:00 PM Release] 1 Imperial Topaz stone (includes Brazilian unheated sherry color) (comes with 1 London Blue Topaz stone) - Regular price 22,800 yen Sale price¥4,980
[On sale August 16th at 10 PM JST] Limited to 4 stones: Swiss Blue Topaz (Star of David/Hexagram Cut, approx. 8mm) [Multiple purchase discount available]

[On sale August 16th at 10 PM JST] Limited to 4 stones: Swiss Blue Topaz (Star of David/Hexagram Cut, approx. 8mm) [Multiple purchase discount available] Sale price¥4,980
[On sale August 12th at 10 PM] "Limited to 15 Stones" Diamond Gacha featuring rare butterfly-cut diamonds "Multiple Purchase Discount Available"

[On sale August 12th at 10 PM] "Limited to 15 Stones" Diamond Gacha featuring rare butterfly-cut diamonds "Multiple Purchase Discount Available" Sale price¥5,980
Limited to 9 Stones: Untreated Bicolor and Sky Blue Topaz 1-Stone Gacha (Brazilian) (Bulk Purchase Discount Available)

Limited to 9 Stones: Untreated Bicolor and Sky Blue Topaz 1-Stone Gacha (Brazilian) (Bulk Purchase Discount Available) Sale price¥6,980
宝石ガチャ💎ハートシェイプのトルマリン1石💎4mm《複数購入割引有》

Gem Gacha💎Heart-shaped tourmaline 1 stone💎4mm《Multiple purchase discount available》 Sale price¥2,980
K18YGブラジル産パライバトルマリン0.047 リング

K18YG Brazilian Paraiba Tourmaline Ring (Flucche Setting, Pear Shape, Matte Finish) Sale price¥69,800
《Limited 4 Stones》Needle In Blue Topaz Gacha 💎 Average 45ct《Bulk Purchase Discount Available》

《Limited 4 Stones》Needle In Blue Topaz Gacha 💎 Average 45ct《Bulk Purchase Discount Available》 Sale price¥9,800
《Limited to 15 stones》Pink Diaspore from Afghanistan, 1 stone, loose (avg. 0.3ct) 《Bulk purchase discount available》

《Limited to 15 stones》Pink Diaspore from Afghanistan, 1 stone, loose (avg. 0.3ct) 《Bulk purchase discount available》 Sale price¥3,980
《New from Tucson! Limited 11 Stones》Faceted Dumortierite in Quartz from Brazil《Multi-purchase discount available》

《New from Tucson! Limited 11 Stones》Faceted Dumortierite in Quartz from Brazil《Multi-purchase discount available》 Sale price¥5,980

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.