Ruth

[On sale from 10/31 at 22:00] Sri Lankan yellow sapphire 0.300ct loose stone Sale price¥8,800

[On sale from 10/31 at 22:00] Sri Lankan blue sapphire 0.226ct loose stone Sale price¥14,800

[On sale at 10pm on 10/31] Madagascar sphene 0.483ct loose stone Sale price¥8,800

[On sale at 10pm on 10/31] Ruby 0.248ct loose Sale price¥12,800

[On sale at 10pm on 10/26] Brazilian pink tourmaline 0.323ct loose stone Sale price¥8,800

[On sale at 10pm on 10/26] Brazilian bicolor tourmaline 0.675ct loose stone Sale price¥9,800

[On sale at 10pm on 10/26] Brazilian pink tourmaline 0.448ct loose stone Sale price¥8,800

[On sale at 10pm on 10/26] Mexican yellow opal 0.673ct loose Sale price¥8,800

[On sale at 10pm on 10/26] Mexican Yellow Opal 0.428ct Loose Sale price¥8,800

[On sale at 10pm on 10/26] Sri Lankan yellow sapphire 0.593ct loose stone Sale price¥15,800

[On sale at 10pm on 10/26] Sri Lankan yellow sapphire 0.299ct loose stone Sale price¥12,800

[On sale from 10/26 at 10pm] Sri Lankan yellow sapphire 0.261ct loose stone Sale price¥12,800

[On sale at 10pm on 10/24] Kyanite 1.042ct loose stone (commonly known as Paraiba color kyanite) Sale price¥8,800

[On sale at 10pm on 10/24] Kyanite 1.052ct loose stone (commonly known as Paraiba color kyanite) Sale price¥9,800

[On sale at 10pm on 10/24] Kyanite 0.963ct loose stone (commonly known as Paraiba color kyanite) Sale price¥6,980

[On sale at 10pm on 10/24] Green beryl 0.078ct loose stone Sale price¥5,980

《Yurakucho Marui 2024112 takeout》【10/24 22:00 sale】Tanzanian blue spinel 0.390ct loose Sale price¥9,800

《Yurakucho Marui 2024112 Carry-out》【10/24 22:00 Sale】Indian Alexandrite Cat's Eye 0.787ct Loose Stone Sale price¥25,800

[On sale from 10/31 at 22:00] Myanmar purple spinel 0.519ct loose stone Sale price¥9,800

[On sale from 10/31 at 22:00] Myanmar pink spinel 0.465ct loose stone Sale price¥19,800

[On sale from 10/31 at 22:00] Myanmar purple spinel 0.434ct loose stone Sale price¥12,800

[On sale from 10/31 at 22:00] Myanmar pink spinel 0.360ct loose stone Sale price¥12,800

[On sale from 10/25 at 10pm] {Limited to 3 stones} Rare twin-type Akoya pearl, 1 loose stone, 4.0-4.5mm {Multiple purchase discounts available} Sale price¥3,980

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） 12.770ctルース

[On sale at 10pm on 10/22] 12.770ct loose Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture Sale price¥8,800

[On sale from 10/22 at 10pm] Myanmar purple spinel 4.8mm/0.514ct loose stone Sale price¥6,980

[On sale at 10pm on 10/22] Brazilian bicolor tourmaline 0.820ct loose stone Sale price¥25,800

[On sale at 10pm on 10/22] Sri Lankan white sapphire 0.385ct loose Sale price¥14,800

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

[On sale at 10pm on 10/22] Indian Andesine Labradorite (also known as Rainbow Moonstone) 6mm/0.650ct loose stone Sale price¥15,800

《Yurakucho Marui 2024112 Takeout》【10/22 22:00 Sale】Indian Alexandrite Cat's Eye 0.228ct Loose Sale price¥8,800

[On sale at 10pm on 10/22] Mongolian color change andesine 0.797ct loose stone Sale price¥14,800

ブラジル産パライバトルマリン 0.167ctルース（CuO:1.1%、MnO:3.6%）

[On sale from 10/22 at 10pm] Brazilian Paraiba Tourmaline 0.167ct loose stone (CuO: 1.1%, MnO: 3.6%) Sale price¥69,800

《Yurakucho Marui 2024112 takeout》【10/21 22:00 sale】Brazilian bicolor tourmaline 3.282ct loose Sale price¥59,800

[On sale at 10pm on 10/20] Set of 2 Tanzanite stones, 7.726ct rough and loose from Tanzania Sale price¥9,800

[On sale at 10pm on 10/20] Set of 2 Tanzanite stones, 4.270ct rough and loose from Tanzania Sale price¥7,980

[10/22 22:00 Sale] Afghanistan Stibiotantalite 0.334ct Loose Stone, Nikko Kan Sale price¥98,000

[On sale at 10pm on 10/21] Brazilian bicolor tourmaline 16.088ct loose stone (tricolor) Nikkei Sale price¥298,000

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

[On sale from 10/20 at 10pm] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 4.807ct loose stone Sale price¥15,800

[On sale from 10/20 at 10pm] [Cat cut] Pink tourmaline (bicolor) 5mm/0.459ct loose stone Sale price¥7,980

[On sale at 10pm on 10/20] Tanzanian cobalt spinel (blue spinel) 0.118ct loose stone, Japan-Germany Sale price¥29,800

[On sale at 10pm on 10/21] Greenland Tugtupite 0.337ct loose stone Sale price¥14,800

[On sale from 10/21 at 10pm] American Peridot 7.2mm/1.530ct Loose Sale price¥14,800

ブラジル産パライバトルマリン 0.240ctルース（CuO:1.5%、MnO:1.8%）

[On sale from 10/20 at 10pm] Brazilian Paraiba Tourmaline 0.240ct loose stone (CuO: 1.5%, MnO: 1.8%) Sale price¥45,800

【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） 12.860ctルース《コラボ》ワッペン

[On sale from 10/21 at 10pm] [Koshu Precious Stone Cut] Brazilian Rutile Quartz (Rutile-Rated Quartz) 12.860ct Loose Stone [Collaboration] Patch Sale price¥59,800

【甲州貴石切子】アフガニスタン産クンツァイト 4.630ctルース《コラボ》ワッペン

[On sale from 10/21 at 10pm] [Koshu Precious Stones Cut] Kunzite from Afghanistan 4.630ct loose stone [Collaboration] Patch Sale price¥49,800

【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

[On sale from 10/21 at 10pm] [Koshu Precious Stones Cut] Brazilian Pink Amethyst 3.71ct Loose Irodori [Collaboration] Patch Sale price¥39,800

[On sale from 10/21 at 10pm] [Koshu Precious Stone Cut] Brazilian Rutile Quartz (Rutiled Quartz) 2.270ct Loose Patch Sale price¥29,800

【甲州貴石切子】アフガニスタン産クンツァイト 7.040ctルース《コラボ》ワッペン

[On sale from 10/21 at 10pm] [Koshu Precious Stone Cutting] Kunzite from Afghanistan 7.040ct loose stone [Collaboration] patch Sale price¥49,800

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