Vertical: 3.1 - 4.0mm

[On sale at 10pm on 10/30] Ruby 0.173ct loose Sale price¥12,800

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

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

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

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

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

[On sale 11/2 22:00] Cambodian colorless zircon 0.309ct loose stone Sale price¥4,980

[On sale at 10pm on 10/20] Sri Lankan blue sapphire 3.8mm/0.279ct loose stone Sale price¥8,800

[On sale at 10pm on 10/20] Myanmar red spinel 0.181ct 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） 0.259ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 4mm/0.259ct Loose Stone Sale price¥5,980

Oregon Sunstone from the United States 0.314ct loose stone Sale price¥14,800

Madagascar Oregon Sunstone 4mm/0.239ct Loose Stone Sale price¥7,980

[On sale at 10pm on 14th October] Oregon Sunstone from the US 4.0mm/0.206ct loose stone Sale price¥8,800

[On sale at 10pm on 14th October] Oregon Sunstone from the US 4.0mm/0.204ct loose stone Sale price¥6,980

[On sale at 10pm on 12/10] Kenyan Gold Sheen Sapphire 4mm/0.438ct Loose Sale price¥55,800

[On sale 11/1 at 22:00] Diamond (cabochon cut) 0.183ct loose Sale price¥24,800

[On sale at 10pm on 10/16] Myanmar red spinel 0.281ct rough stone (Star of David) Sale price¥8,800

[On sale at 10pm on 10/24] Brazilian Paraiba Tourmaline in Quartz 3.6mm/0.162ct loose stone Sale price¥14,800

《Yurakucho Marui 2024112 takeout》Madagascar Grandidierite 0.087ct loose stone Sale price¥16,800

[On sale at 10pm on 10/17] Kenyan Gold Sheen Sapphire 3.7mm/0.317ct Loose Sale price¥35,800

[On sale at 10pm on 10/17] Kenyan Gold Sheen Sapphire 3.6mm/0.302ct Loose Sale price¥35,800

Kenyan Gold Sheen Sapphire 0.273ct Loose Sale price¥22,800

Kenyan Gold Sheen Sapphire 0.264ct Loose Sale price¥22,800

Kenyan Gold Sheen Sapphire 0.305ct Loose Sale price¥12,800

Kenyan Gold Sheen Sapphire 0.298ct Loose Sale price¥12,800

[On sale at 10pm on November 9th] Kenyan Gold Sheen Sapphire 0.308ct Loose Sale price¥12,800

《Yurakucho Marui 2024112 Takeout》【Yurakucho Marui 202411 Request Withdrawn】【10/7 22:00 Sale】Kornerupine from Tanzania 0.154ct Loose Stone Sale price¥5,980

非加熱ブラジル産パライバトルマリン 0.068ctルース（CuO:1.4%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.068ct loose stone (CuO: 1.4%, MnO: 2.3%) Sale price¥69,800

《Yurakucho Marui 2024112 takeout》Russian yellow diamond rough (sawable) 0.306ct rough (trigon) Sale price¥98,000

[On sale 10/2 at 10pm] American red beryl 0.092ct loose stone Sale price¥19,800

Brazilian Lazurite (Azurite) 0.083ct loose stone Sale price¥24,800

Brazilian Lazurite (Azurite) 0.071ct loose stone Sale price¥22,800

Brazilian Lazurite (Azurite) 0.064ct loose stone Sale price¥19,800

Euclase from Zimbabwe 0.040ct loose Sale price¥29,800

Brazilian Alexandrite 0.154ct loose stone Sale price¥35,800

Brazilian bicolor euclase 0.233ct loose stone Sale price¥24,800

Brazilian bicolor euclase 0.212ct loose stone Sale price¥15,800

Brazilian bicolor euclase 0.168ct loose stone Sale price¥25,800

Brazilian bicolor euclase 0.157ct loose stone Sale price¥14,800

Umba Sapphire (Tanzania) 0.182ct loose stone Sale price¥7,980

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

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

Paraiba tourmaline from Brazil 0.052ct loose Sale price¥29,800

[10/2 22:00 Sale] Nigerian Cobalt Garnite 0.284ct Loose Stone JTL Sale price¥39,800

[10/2 22:00 Sale] Nigerian Cobalt Garnite 0.179ct Loose Stone JTL Grade 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