Ruth

[On sale at 10pm on 11/14] Sri Lankan yellow sapphire 0.226ct loose stone Sale price¥8,800

[On sale at 10pm on 11/14] Sri Lankan Yellow Sapphire 0.272ct Loose (Bi-Color) Sale price¥12,800

[On sale 11/10 at 22:00] Sri Lankan yellow sapphire 0.543ct loose stone Sale price¥29,800

[On sale at 10pm on 11/14] Indian Iolite Sunstone 0.247ct Loose Sale price¥5,980

[On sale at 10pm on 11/14] Indian Iolite Sunstone 0.353ct Loose Sale price¥8,800

[On sale 11/10 at 22:00] Indian Iolite Sunstone 0.255ct Loose Sale price¥5,980

[On sale 11/10 at 22:00] Indian Iolite Sunstone 0.411ct Loose Sale price¥9,800

[On sale 11/10 at 22:00] Indian Iolite Sunstone 4.3mm/0.243ct Loose Sale price¥6,980

[On sale at 10pm on 11/10] Blue beryl (Mashish beryl) 3.5mm/0.152ct loose stone Sale price¥8,800

[On sale at 10pm on 11/14] Blue beryl (Mashish beryl) 0.224ct loose stone Sale price¥9,800

[On sale at 10pm on 11/14] Blue beryl (Mashish beryl) 3.6mm/0.176ct loose stone Sale price¥8,800

[On sale at 10pm on 11/10] Blue beryl (Mashish beryl) 3.5mm/0.158ct loose stone Sale price¥8,800

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） 0.483ctルース

[On sale 11/10 at 22:00] Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 5.2mm/0.483ct loose stone Sale price¥7,980

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） 0.399ctルース

[On sale 11/10 at 22:00] Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.399ct loose stone Sale price¥6,980

[On sale 11/10 at 22:00] Indian Moonstone 6.2mm/0.749ct Loose Sale price¥7,980

[On sale 11/10 at 22:00] Indian Moonstone 8.2mm/1.823ct Loose Sale price¥14,800

[11/10 22:00 Sale] Brazilian Hessonite Garnet 2.664ct Loose Sale price¥12,800

[On sale 11/10 at 22:00] Brazilian Green Spodumene 9.0mm/2.865ct Loose Stone Sale price¥12,800

[11/10 22:00 Sale] Tanzanian Garnet 8.0mm/2.538ct Loose Stone Sale price¥12,800

[On sale at 10pm on 11/14] Australian prehnite 5.398ct loose stone Sale price¥12,800

[On sale at 10pm on 11/14] Unheated Mozambique ruby 0.220ct loose Sale price¥25,800

ブラジル産ルチルクォーツ（ルチルレイテッドクォーツ）12mm/7.140ctルース

[On sale 11/12 at 10pm] Brazilian rutilated quartz (rutilated quartz) 12mm/7.140ct loose stone Sale price¥9,800

ブラジル産ルチルクォーツ（ルチルレイテッドクォーツ） 12mm/6.709ctルース

[On sale 11/12 at 10pm] Brazilian rutilated quartz (rutilated quartz) 12mm/6.709ct loose stone Sale price¥9,800

[On sale 11/12 at 22:00] 2.467ct loose Oregon sunstone from the United States Sale price¥9,800

[11/12 22:00 Sale] Sri Lankan Chrysoberyl Cat's Eye 0.532ct Loose Stone Sale price¥5,980

[On sale 11/12 at 10pm] Colombian emerald 3.5mm/0.150ct loose stone Sale price¥22,800

[On sale 11/12 at 10pm] American Red Beryl 3.0mm/0.080ct Loose Sale price¥39,800

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） 0.349ctルース

[On sale 11/12 at 10pm] Madagascar Andesine Labradorite Moonstone (also known as Rainbow Moonstone) 4.7mm/0.349ct loose stone Sale price¥12,800

[11/12 22:00 Sale] Brazilian Alexandrite 0.058ct Loose Sale price¥8,800

[On sale 11/7 at 10pm] Mexican Hyalite Opal 0.171ct loose stone (fluoresces even in sunlight) Sale price¥17,800

[On sale 11/7 at 10pm] Mexican Hyalite Opal 0.170ct loose stone (fluoresces even in sunlight) Sale price¥18,800

[On sale 11/7 at 22:00] Nigerian Cobalt Garnite 0.150ct Loose Sale price¥12,800

マダガスカル産アンデシン・ラブラドライト（通称名ブルームーンストーン） 1.453ctルース

[On sale 11/7 at 10pm] Madagascar Andesine Labradorite (also known as Blue Moonstone) 1.453ct loose stone Sale price¥19,800

《Yurakucho Marui 2024112 Carry-out》【11/7 22:00 Sale】Indian Alexandrite Cat's Eye 0.621ct Loose Stone Sale price¥18,800

《Yurakucho Marui 2024112 takeout》【11/7 22:00 sale】Brazilian pink tourmaline 0.960ct loose Sale price¥15,800

[On sale at 10pm on 11/5] Brazilian bicolor tourmaline 0.763ct loose stone Sale price¥7,980

[On sale at 10pm on 11/5] Brazilian bicolor tourmaline 1.177ct loose stone Sale price¥12,800

[On sale 11/5 at 22:00] Colombian Trapiche Emerald 1.341ct Loose Sale price¥6,980

[On sale from 10pm on 11/5] Myanmar purple spinel 0.514ct loose stone Sale price¥8,800

[On sale 11/4 at 22:00] Pakistani lazurite (blue sapphire) 0.123ct loose stone Sale price¥59,800

[On sale 11/4 at 22:00] Brazilian Paraiba Tourmaline 0.112ct loose stone Sale price¥29,800

[On sale 11/4 at 22:00] Brazilian Paraiba Tourmaline 0.138ct loose stone Sale price¥39,800

[On sale 11/4 at 22:00] Brazilian Paraiba Tourmaline 0.181ct loose stone (CuO: 0.7%, MnO: 0.2%) Sale price¥59,800

[On sale 11/4 at 22:00] Tanzanian blue spinel 1.028ct loose stone Sale price¥39,800

[On sale 11/4 at 22:00] Mozambique pink spinel 0.550ct loose stone Sale price¥14,800

[On sale 11/4 at 22:00] Set of 2 Tanzanian bicolor tanzanite rough stones and loose stones, 3.018ct Sale price¥6,980

[On sale 11/4 at 10pm] Montana Sapphire 2.5mm/0.073ct Loose Stone (Blue Sapphire) Sale price¥8,800

[On sale 11/4 at 10pm] Montana Sapphire 3.3mm/0.158ct loose stone (green sapphire) Sale price¥15,800

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