Vertical: 4.1 - 5.0mm

Unheated Mozambique Ruby 0.231ct Loose Sale price¥25,800

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

[On sale 11/4 at 10pm] Brazilian Alexandrite 0.519ct loose stone (sugarloaf cut) Sale price¥358,000

[On sale 11/4 at 22:00] Pakistani Veirinite 4.5mm/0.326ct loose stone Sale price¥88,800

[On sale at 10pm on 10/26] Sri Lankan chrysoberyl cat's eye 0.519ct loose stone Sale price¥8,800

[On sale at 10pm on 10/25] Tanzanite from Tanzania 0.298ct loose stone Sale price¥9,800

[On sale at 10pm on 10/25] Tanzanite from Tanzania 0.250ct loose stone Sale price¥7,980

[On sale at 10pm on 10/25] Tanzanite from Tanzania 0.326ct loose stone Sale price¥8,800

[On sale at 10pm on 10/25] Tanzanian bicolor zoisite 0.320ct loose stone Sale price¥7,980

[On sale at 10pm on 10/25] Tanzanite from Tanzania 0.321ct loose stone Sale price¥6,980

[On sale at 10pm on 10/25] Tanzanite from Tanzania 0.250ct loose stone Sale price¥8,800

[On sale at 10pm on 10/30] Ruby 0.284ct loose Sale price¥15,800

[On sale at 10pm on 10/30] Ruby 0.245ct loose Sale price¥11,800

[On sale at 10pm on 10/30] Ruby 0.254ct loose Sale price¥8,800

[On sale from 10/31 at 22:00] Sri Lankan yellow sapphire 0.344ct loose stone Sale price¥8,800

[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 pink tourmaline 0.448ct loose stone 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

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

[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 purple spinel 0.434ct loose stone Sale price¥12,800

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

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

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

[On sale at 10pm on 10/22] Cambodian colorless zircon 0.508ct loose stone Sale price¥8,800

[On sale at 10pm on 10/22] Cambodian colorless zircon 0.512ct loose stone Sale price¥8,800

[On sale at 10pm on 10/20] Sri Lankan blue sapphire 4.5mm/0.401ct loose stone Sale price¥12,800

[On sale at 10pm on 10/16] Oregon Sunstone from the United States 5.0mm/0.460ct loose stone Sale price¥19,800

[On sale 11/1 at 22:00] Diamond (cabochon cut) 0.366ct loose Sale price¥59,800

[On sale at 10pm on 10/16] Myanmar red spinel 0.524ct rough stone (Star of David) Sale price¥14,800

[On sale at 10pm on 10/16] Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.284ct loose stone Sale price¥22,800

[On sale at 10pm on 10/23] Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.330ct loose stone Sale price¥15,800

Tanzanian Mandarin Garnet 0.383ct Loose Stone Sale price¥19,800

Russian diamond rough (sawable) 0.509ct rough (trigon) Sale price¥168,000

Sold out

《Yurakucho Marui 2024112 takeout》【32501750 posted】Lab-grown diamond (synthetic diamond) 0.300ct loose (FANCY INTENSE PINK, VS1)

Brazilian Imperial Topaz 0.377ct Loose Stone Sale price¥14,800

Mexican Fire Opal 4.9mm/0.333ct Loose Sale price¥8,800

Grace Spinel 0.384ct Loose Sale price¥9,800

Brazilian bicolor euclase 0.291ct loose stone Sale price¥15,800

Brazilian Euclase 0.117ct Loose Stone Sale price¥12,800

Brazilian bicolor euclase 0.286ct loose stone Sale price¥8,800

《Yurakucho Marui 2024112 takeout》 Tanzanian Tanzanite 0.482ct loose stone (princess cut) Sale price¥18,800

Brazilian Alexandrite 0.180ct Loose GIA Sale price¥55,800

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

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

Madagascar pink sapphire 0.307ct loose stone Sale price¥12,800

Russian Phenakite 5mm/0.477ct Loose Stone Sale price¥18,800

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