Ruth

Brazilian Green Tourmaline 4.374ct Loose Stone Sale price¥98,000

Tanzanite from Tanzania 6.006ct loose stone Sale price¥228,000

Cobalt spinel from Tanzania 0.284ct loose Japanese and German Sale price¥49,800

[Camellia Cut] Brazilian Ametrine 4.293ct [Collaboration] Loose Patch Sale price¥49,800

Oregon Sunstone from the United States 1.625ct loose stone Sale price¥29,800

Oregon Sunstone from the United States 0.941ct loose stone Sale price¥29,800

Oregon Sunstone from the United States 0.976ct loose stone Sale price¥12,800

Peruvian Blue Opal 2.530ct Loose Sale price¥19,800

Pink spinel 3.8mm/0.276ct loose stone Sale price¥6,980

カメレオンダイヤモンド 0.110ctルース(FANCY BROWNISH GREENISH YELLOW, SI2)

Chameleon Diamond 3mm/0.110ct Loose (FANCY BROWNISH GREENISH YELLOW, SI2) Sale price¥29,800

Vietnam unheated silky pink sapphire 0.421ct loose stone Sale price¥29,800

ブラジル産パライバトルマリン 0.134ctルース（CuO:0.9%,MnO:0.2%）

Paraiba tourmaline from Brazil 0.134ct loose (CuO:0.9%,MnO:0.2%) Sale price¥49,800

Bicolor Benitoite 0.601ct Loose Japanese-German Edition Sale price¥458,000

Nigerian Green Beryl 1.349ct Loose Stone Sale price¥98,000

American oil-free red beryl 0.050ct loose GIA Sale price¥98,000

Limited to 20 stones, Brazilian dendritic quartz, 1 loose stone, multiple purchase discounts available Sale price¥3,980

Limited to 12 stones, Pakistani oil in quartz, moving bubbles, 1 loose stone, multiple purchase discounts available Sale price¥4,980

Limited to 5 sets: A set of loose and tumbled Oregon Sunstones cut by Sanjay from the United States. Discounts available for multiple purchases. Sale price¥6,980

Tanzanian pink zoisite 5.8mm/0.848ct loose stone from Yurakucho Marui 2024112 Sale price¥198,000

《Yurakucho Marui 2024112 takeout》Madagascar Grandidierite 0.521ct loose stone Sale price¥128,000

Australian black opal 0.675ct loose stone Sale price¥24,800

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） 1.911ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.911ct loose stone Sale price¥39,800

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） 1.742ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.742ct loose stone Sale price¥37,800

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） 1.099ctルース

Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 1.099ct loose stone Sale price¥8,800

Madagascar Purple Sapphire 0.232ct Loose Sale price¥12,800

Limited to 18 stones: Myanmar spinel (3.5mm, pentagonal cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980

Limited to 6 stones: Russian phenakite (round cut, 3.3mm) 1 loose stone. Discounts available for multiple purchases. Sale price¥8,800

Australian Boulder Opal 0.768ct Loose Sale price¥12,800

Brazilian parti-color tourmaline 2.702ct loose stone Sale price¥69,800

【甲州貴石切子plusthree】ロッククリスタル 15mm/10.059ctルース《昴×灯》(ダブル切子タイプ) ワッペン

[Koshu Precious Stone Cut Plusthree] Rock Crystal 15mm/10.059ct Loose Stone "Subaru x Hikaru" (Double Cut Type) Patch Sale price¥45,800

Brazilian rhodonite 3.224ct loose stone Sale price¥98,000

Colombian emerald cat's eye 0.690ct loose stone Sale price¥39,800

Australian black opal 9.709ct loose stone Sale price¥158,000

Tanzanian pink zircon 3.069ct loose stone Sale price¥49,800

Czech Aragonite 8.0mm/2.082ct Loose Stone Sale price¥69,800

Brazilian Rubellite 3.845ct loose stone Sale price¥198,000

Brazilian Paraiba Tourmaline 0.208ct loose stone Sale price¥49,800

Brazilian Paraiba Tourmaline 0.211ct loose stone Sale price¥49,800

Indian Rainbow Quartz (Iridescent Quartz) 0.940ct Loose Stone Sale price¥158,000

Tanzanian bicolor sapphire 0.818ct loose stone (tricolor sapphire) Sale price¥198,000

ダイヤモンド 3.6mm/0.189ctルース（カボションカット、バイカラー蛍光）

Diamond 3.6mm/0.189ct loose (cabochon cut, bicolor fluorescent) Sale price¥49,800

Diamond 0.128ct loose stone (cabochon cut, maroon cut) Sale price¥39,800

Limited to 5 stones: 1 synthetic moissanite loose stone (Sanjay cut hexagonal, 6mm) Multiple purchase discounts available Sale price¥8,800

Limited to 6 stones: 1 loose black diamond (rose cut, 5mm) Multiple purchase discounts available Sale price¥6,980

Limited to 6 stones: Brazilian Medusa Quartz (Paraiba Quartz) cat cut 1 stone loose (6mm) Multiple purchase discount available Sale price¥7,980

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） 1.777ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.777ct loose stone Sale price¥39,800

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） 1.885ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.885ct loose stone Sale price¥39,800

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） 1.874ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.874ct loose stone Sale price¥39,800

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments