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Sold out コロンビア産パイライト・雲母インエメラルド 0.901ctルース

Colombian pyrite-mica emerald 0.901ct loose stone
Sold out 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） 1.561ctルース

Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture, 1.561ct loose stone
Sold out ミャンマー産トラピッチェルビー 0.125ctルース

Myanmar Trapiche Ruby 2.6mm/0.125ct Loose Stone
Sold out コロンビア産パイライト・雲母インエメラルド 0.983ctルース

Colombian pyrite-mica emerald 0.983ct loose stone
Sold out タンザナイト 1.577ctルース

Tanzanite from Tanzania 1.577ct loose stone
Sold out バイカラーサファイア 0.118ctルース

Tanzanian bicolor sapphire 0.118ct loose stone
Sold out バイカラーサファイア 0.128ctルース

Tanzanian bicolor sapphire 0.128ct loose stone
Sold out バイカラーサファイア 0.181ctルース

Tanzanian bicolor sapphire 0.181ct loose stone
Sold out アクアマリン 0.739ctルース

Vietnam Aquamarine 5.0mm/0.739ct Loose Stone
Sold out ブラジル産ラズライト（天藍石） 0.052ctルース

Brazilian Lazurite (Azurite) 0.052ct loose stone
Sold out ブラジル産ラズライト（天藍石） 0.061ctルース

Brazilian Lazurite (Azurite) 0.061ct loose stone
Sold out ブラジル産ラズライト（天藍石） 0.083ctルース

Brazilian Lazurite (Azurite) 0.083ct loose stone
Sold out タンザニア産コーネルピン 0.170ctルース

Tanzanian Kornerupine 0.170ct loose stone
Sold out カンテラオパール 4.542ctルース

Mexican Cantera Opal 4.542ct Loose
Sold out タンザナイト 0.856ctルース

Tanzanite from Tanzania 0.856ct loose stone
Sold out ブルーサファイア 0.279ctルース

Sri Lankan Blue Sapphire 3.8mm/0.279ct Loose
Sold out ブルーサファイア 0.401ctルース

Sri Lankan Blue Sapphire 4.5mm/0.401ct Loose
Sold out コロンビア産エメラルド 3.1mm/0.097ctルース

Colombian emerald 3.1mm/0.097ct loose
Sold out ロシア産デマントイドガーネット（ホーステール認む） 3mm/0.165ctルース

Russian Demantoid Garnet (Horsetail Recognized) 3mm/0.165ct Loose Stone
Sold out [Limited to 10 stones] Inca Rose from Argentina (Rhodochrosite, average 1.5ct) [Multiple purchase discount available]

[Limited to 10 stones] Inca Rose from Argentina (Rhodochrosite, average 1.5ct) [Multiple purchase discount available]
Sold out ロシア産ノンオイルエメラルド 0.640ctルース GIA

Russian oil-free emerald 0.640ct loose GIA
Sold out 【甲州貴石切子】ルチルクォーツ（ルチルレイテッドクォーツ） 2.270ctルース ワッペン

[Koshu Precious Stones] Brazilian Pink Amethyst 3.71ct Loose Color "Collaboration" Patch
Sold out ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 4.807ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 4.807ct Loose Stone
Sold out アフガニスタン産スティビオタンタライト 0.334ctルース 日独鑑

Afghanistan Stibiotantalite 0.334ct Loose Stone, Japan-Germany Mirror
Sold out インド産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.650ctルース

Indian Andesine Labradorite (also known as Rainbow Moonstone) 6mm/0.650ct loose stone
Sold out ミャンマー産パープルスピネル 0.514ctルース

Myanmar Purple Spinel 4.8mm/0.514ct Loose Stone
Sold out 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） 12.770ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 12.770ct loose
Sold out メキシコ産カンテラオパール 1.794ctルース

Mexican Cantera Opal 1.794ct Loose
Sold out ミャンマー産バイカラージョウハチドーライト 0.416ctルース

Bicolor johachidorite from Myanmar 0.416ct loose
coming soon 【22602620掲載】【カラフリ】K18PG 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） ペンダントトップ（ネックレストップ）

【6/22 22時販売】【カラフリ】K18PG 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） ペンダントトップ（ネックレストップ）鑑別書　 Sale price¥29,800
Sold out [On sale June 8th at 10 PM] Limited to 10 Stones: Top Quality Benitoite Loose Stone (2mm, round cut) - Multiple Purchase Discount Available

[On sale June 8th at 10 PM] Limited to 10 Stones: Top Quality Benitoite Loose Stone (2mm, round cut) - Multiple Purchase Discount Available
Sold out Have fun guessing what you'll receive! Gacha set of two gemstones (including rare stones) (Multiple purchase discounts available)

Have fun guessing what you'll receive! Gacha set of two gemstones (including rare stones) (Multiple purchase discounts available)
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 Limited to 20 stones! Includes 6 red gemstones of pigeon blood ruby ​​with AGL certificate. Discounts available for multiple purchases.

Limited to 20 stones! Includes 6 red gemstones of pigeon blood ruby ​​with AGL certificate. Discounts available for multiple purchases.
Sold out [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
Sold out Custom-made lucky bag for beginners💎 Includes two gemstones (one with a diamond), a CZ set, and a ring image holder (multiple purchase discounts available)

Custom-made lucky bag for beginners💎 Includes two gemstones (one with a diamond), a CZ set, and a ring image holder (multiple purchase discounts available)
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 Limited to 19 stones: Blue sapphire from Madagascar (medium blue, oval cut) Discounts available for multiple purchases

Limited to 19 stones: Blue sapphire from Madagascar (medium blue, oval cut) Discounts available for multiple purchases
Sold out 《Shinjuku Pop-Up Event Commemorative Offer》《Limited Stock Remaining》 Color Diamond Set (including pink, ice blue, green diamonds, and more, 9 stones or more in total), valued at ¥30,000 normally. 《Multi-Purchase Discount Available》

《Shinjuku Pop-Up Event Commemorative Offer》《Limited Stock Remaining》 Color Diamond Set (including pink, ice blue, green diamonds, and more, 9 stones or more in total), valued at ¥30,000 normally. 《Multi-Purchase Discount 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 Limited Quantity: Russian Phenakite (Round Cut, 3mm) Loose Stone (Multiple Purchase Discounts Available)

Limited Quantity: Russian Phenakite (Round Cut, 3mm) Loose Stone (Multiple Purchase Discounts Available)
Sold out Win two unheated royal blue sapphires (with AIGS certificate) in the Blue Sapphire Lottery (Multiple purchase discounts available)

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 Cambodian Ratanakiri Blue Zircon (4mm) Multiple purchase discounts available

Limited to 14 stones: 1 Cambodian Ratanakiri Blue Zircon (4mm) Multiple purchase discounts available
Sold out Limited to 20 stones! Includes 2 Koshu Kiriko fire opals and 1 loose fire opal. Discounts available for multiple purchases.

Limited to 20 stones! Includes 2 Koshu Kiriko fire opals and 1 loose fire opal. Discounts available for multiple purchases.
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 Russian alexandrite normally 69,800 JPY, rare twin chrysoberyl cat's eye normally 65,800 JPY, Alex Gacha (multiple purchase discount available)

Russian alexandrite normally 69,800 JPY, rare twin chrysoberyl cat's eye normally 65,800 JPY, Alex 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.