New stock

{Yurakucho Marui 2024112 takeout} Bicolor Imperial Topaz 1.725ct loose stone Sale price¥98,000

《Yurakucho Marui 2024112 takeout》Tanzanite 2.726ct loose stone Sale price¥118,000

Royal blue sapphire 0.81ct loose AIGS Sale price¥88,800

Montana Sapphire 0.119ct loose Sale price¥16,800

【ダンデライオンカット】ダンビュライト 8mm/1.860ct《コラボ》ルースワッペン付

[Dandelion Cut] Danburite 8mm/1.860ct《Collaboration》Loose with patch Sale price¥29,800

1 stone of celestite rough stone (discount available for multiple purchases) [Also for rough polishing] Sale price¥3,980

Oil-in-quartz from Pakistan《Moving bubble type》1 stone loose《Discount available for multiple purchases》 Sale price¥3,980

《Yurakucho Marui 2024112 takeout》Malawi sapphire 3mm/0.144ct loose stone Sale price¥22,800

Sri Lankan zircon 2.307ct loose Sale price¥12,800

Johachidolite from Myanmar 0.614ct loose Sale price¥29,800

Montana Sapphire 3mm/0.154ct loose Sale price¥22,800

Lab-grown diamond (synthetic diamond)《HPHT method》1 stone loose《Multiple purchase discount available》 Sale priceFrom ¥2,980

Diamond 1.2mm (VS class, DG color, round cut, melee diamond) 1 loose stone {Multiple purchase discounts available} Sale price¥1,980

Color change Andesine 2.311ct loose Sale price¥35,800

Gem Gacha "April Birthstone" 💎 Fluorescent Yellow Diamond (Tapered Cut or Baguette Cut) 1 Stone {Multiple Purchase Discounts Available} Sale price¥3,980

【甲州貴石切子plusthree】レピドクロサイトインクォーツ 1.973ct《コラボ》ルースワッペン付

[Koshu precious stone Kiriko plusthree] Lepidocrocite in quartz 1.973ct《Collaboration》Loose with emblem Sale price¥45,800

《Yurakucho Marui 2024112 Takeout》Green Zoisite 2.606ct Loose Stone Sale price¥98,000

[Koshu precious stone Kiriko plusthree] Ametrine 5.994ct with loose patch Sale price¥39,800

South African green diamond rough (makeable) 0.298ct loose Sale price¥79,800

Colombian Trapiche Emerald (Reverse Trapiche) 0.329ct Rough Stone Sale price¥39,800

Cantera opal 14.581ct loose Sale price¥45,800

Russian demantoid garnet (horsetail recognized) 0.600ct loose Sale price¥148,000

Wurzite 0.224ct loose Japanese-German book Sale price¥55,800

Gem Gacha "Rose Cut"💎 Bicolor Tourmaline 1 stone (5 x 7 mm) {Multiple purchase discount available} Sale price¥6,980

《9石限定》ジェムガチャ『春色カラー』💎バイカラートルマリン1石 - カラッツSTORE

《9 stones only》Gem gacha "Spring colors"💎Bicolor tourmaline x 1《Multiple purchase discounts available》 Sale price¥6,980

ブラジル産パライバトルマリン 0.252ctルース（CuO:0.9%、MnO:2.0%）

Paraiba tourmaline from Brazil 0.252ct loose (CuO:0.9%, MnO:2.0%) Sale price¥39,800

【カラフリ】クローバーダイヤモンド0.12ct ペンダント（ネックレス）《0.120ct/E/VS2/EX》 - カラッツSTORE

[Colorful] Clover diamond 0.12ct pendant (necklace)《0.120ct/E/VS2/EX》 Sale price¥69,800

【カラフリ】ダイヤモンド0.114ct ペンダント（ネックレス）《0.114ct/G/VS1/VG》 - カラッツSTORE

[Colorful] Diamond 0.114ct pendant (necklace)《0.114ct/G/VS1/VG》 Sale price¥55,800

【カラフリ】Pt900/Pt850アウイナイト0.08ct ペンダント（ネックレス） - カラッツSTORE

[Colorful] Pt900/Pt850 Auinite 0.08ct pendant (necklace) Sale price¥79,800

【カラフリ】Pt900/Pt850クリノヒューマイト0.726ct ペンダント（ネックレス） - カラッツSTORE

[Colorful] Pt900/Pt850 Clinohumite 0.726ct Pendant (Necklace) Sale price¥89,800

【カラフリ】K18WGダイヤモンド0.50ct ペンダント（ネックレス） - カラッツSTORE

[Colorful] K18WG diamond 0.50ct pendant (necklace) Sale price¥79,800

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） 3.041ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.041ct loose Sale price¥39,800

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） 3.086ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.086ct loose Sale price¥29,800

ブラジル産パライバトルマリン 0.275ctルース（CuO:1.5％.MnO:2.3％）

《Yurakucho Marui 2024112 takeout》Brazilian Paraiba tourmaline 0.275ct loose stone (CuO: 1.5%. MnO: 2.3%) Sale price¥358,000

Gold Sheen Sapphire 4mm/0.409ct loose Sale price¥29,800

アンデシン・ラブラドライトムーンストーン（通称名レインボームーンストーン） 0.600ctルース

Andesine Labradorite Moonstone (commonly known as Rainbow Moonstone) 0.600ct loose Sale price¥14,800

Color change Andesine 5.5mm/0.754ct loose Sale price¥13,800

Color change Andesine 1 stone (3mm, round cut)《Discount available for multiple purchases》 Sale price¥2,980

Sphene 6.5mm/1.183ct loose Sale price¥19,800

Lavender tanzanite 2.219ct loose Sale price¥79,800

Bicolor Zoisite 1.785ct loose Sale price¥55,800

{Yurakucho Marui 2024112 takeout} Bicolor Tanzanite 2.304ct loose stone Sale price¥59,800

Apatite cat's eye 3.914ct loose Sale price¥7,980

Opal 21.584ct loose Japanese and German Sale price¥8,800

【甲州貴石切子plusthree】トルマリンインクォーツ 2.484ct《コラボ》ルース《昴》ワッペン付

[Koshu precious stone Kiriko plusthree] Tourmaline in quartz 2.484ct《Collaboration》Ruth《Subaru》 Patch included Sale price¥29,800

【甲州貴石切子plusthree】トルマリンインクォーツ 2.652ct《コラボ》ルースワッペン付

[Koshu precious stone Kiriko plusthree] Tourmaline in quartz 2.652ct《Collaboration》 Loose with emblem Sale price¥29,800

【甲州貴石切子plusthree】ロンドンブルートパーズ 2.461ct《コラボ》ルース《暁》ワッペン付

[Koshu Precious Stone Kiriko plusthree] London Blue Topaz 2.461ct《Collaboration》Ruth《Akatsuki》 Patch included Sale price¥29,800

【甲州貴石切子plusthree】アメトリン 2.445ct《コラボ》ルースワッペン付

[Koshu precious stone Kiriko plusthree] Ametrine 2.445ct《Collaboration》 Loose with emblem Sale price¥29,800

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