Product list

[On sale 3/2 at 10pm] Brazilian Alexandrite 0.147ct loose stone (princess cut) Sale price¥29,800

ダイヤモンド 2.5mm/0.057ctルース（VSクラス相当,ハートシェイプ）

[On sale 3/7 at 10pm] Diamond 2.5mm/0.057ct loose stone (VS class equivalent, heart shape) Sale price¥12,800

[On sale 3/2 at 10pm] Brazilian Alexandrite 0.145ct loose stone Sale price¥29,800

[On sale 3/2 at 22:00] Blue beryl (Mashish beryl) 0.172ct loose stone Sale price¥8,800

[On sale 3/2 at 22:00] Sri Lankan yellow sapphire 0.375ct loose stone Sale price¥12,800

[On sale 3/2 at 22:00] Madagascar sapphire 0.206ct loose stone Sale price¥12,800

[On sale 3/1 at 22:00] Madagascar Yellow Sapphire 0.493ct Loose Sale price¥9,800

Unheated Sri Lankan purple sapphire 0.986ct loose stone Sale price¥9,800

[On sale 3/1 at 22:00] Mozambique Almandine Garnet 0.852ct Loose Sale price¥9,800

[On sale 3/1 at 22:00] Synthetic Alexandrite 0.561ct loose stone Sale price¥12,800

[On sale 3/9 at 22:00] Pakistani Veirinite 0.040ct loose stone Sale price¥7,980

[On sale 3/9 at 22:00] Pakistani Veirinite 0.055ct loose stone Sale price¥9,800

[On sale 3/9 at 10pm] [New in Tucson] Australian Rainbow Lattice Sunstone 1.313ct Loose Sale price¥12,800

[On sale 3/9 at 10pm] [New in Tucson] Australian Rainbow Lattice Sunstone 1.914ct Loose Sale price¥19,800

[On sale 3/9 at 10pm] [New in Tucson] Australian Rainbow Lattice Sunstone 1.231ct Loose Sale price¥19,800

[On sale at 22:00 on 3/9] [New Arrival in Tucson] Australian Rainbow Lattice Sunstone 0.633ct Loose Sale price¥8,800

[E_27 Yurakucho Marui take-out] [On sale at 22:00 on 3/9] [New in Tucson] Australian rainbow lattice sunstone 0.795ct loose stone Sale price¥8,800

[On sale 3/9 at 10pm] [New in Tucson] Australian Rainbow Lattice Sunstone 0.879ct Loose Sale price¥9,800

[E_27 Yurakucho Marui take-out] [On sale at 22:00 on 3/9] [New in Tucson] Australian rainbow lattice sunstone 0.738ct loose stone Sale price¥9,800

[E_27 Yurakucho Marui take-out] [On sale at 22:00 on 3/9] [New in Tucson] Australian rainbow lattice sunstone 0.712ct loose stone Sale price¥12,800

[On sale 3/9 at 10pm] [New in Tucson] Australian Rainbow Lattice Sunstone 0.725ct Loose Sale price¥11,000

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.182ctルース

[E_27 Yurakucho Marui Take-out] [On sale at 22:00 on 3/9] Madagascar Bekiri Blue Garnet (Color Change Garnet) 3.0mm/0.182ct Loose Sale price¥25,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.179ctルース

[On sale 3/9 at 22:00] Madagascar Bekiri Blue Garnet (Color Change Garnet) 3.7mm/0.179ct Loose Stone Sale price¥22,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.193ctルース

[E_27 Yurakucho Marui Take-out] [On sale at 22:00 on 3/9] Madagascar Bekiri Blue Garnet (Color Change Garnet) 3.6mm/0.193ct Loose Sale price¥25,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.189ctルース

[On sale 3/9 at 10pm] Madagascar Bekiri Blue Garnet (Color Change Garnet) 3.5mm/0.189ct Loose Stone Sale price¥24,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.302ctルース

[On sale 3/9 at 22:00] Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.302ct Loose Sale price¥39,800

[On sale at 22:00 on 3/9] [New Arrival in Tucson] Canadian Shortite 0.423ct Loose Stone, Japan-Germany Exchange Sale price¥69,800

[On sale 3/9 at 22:00] [New Arrival in Tucson] Canadian Natrolite 7.1mm/0.982ct Loose Stone, Nikkei Kan Sale price¥35,800

アフガニスタン産バイカラートルマリン 2.664ctルース（シーフォームトルマリン）

[On sale at 22:00 on 3/9] 2.664ct bicolor tourmaline loose stone from Afghanistan (seafoam tourmaline) Sale price¥128,000

[On sale 3/1 at 22:00] Madagascar Purple Sapphire 0.562ct Loose JTL Grade Sale price¥29,800

[On sale 3/1 at 22:00] Madagascar Green Sapphire 0.338ct Loose JTL Grade Sale price¥15,800

[On sale 3/1 at 22:00] Mongolian color change andesine 0.808ct loose stone Sale price¥14,800

ブラジル産非加熱ピンクインペリアルトパーズ（シェリーピンク） 1.039ctルース

[On sale 3/2 at 22:00] Brazilian unheated pink imperial topaz (sherry pink) 1.039ct loose stone Sale price¥49,800

[On sale 3/1 at 22:00] Brazilian Alexandrite 2.8mm/0.100ct loose stone Sale price¥19,800

[On sale 3/1 at 22:00] Brazilian green tourmaline 1.031ct loose stone Sale price¥22,800

ブラウンダイヤモンド 0.554ctルース (カボションカット,SIクラス相当)

[On sale at 10pm on 2/28] Brown diamond 0.554ct loose (cabochon cut, SI class equivalent) Sale price¥69,800

[On sale from 10pm on 2/27] Sri Lankan star sapphire 5.0mm/0.899ct loose stone Sale price¥9,800

[On sale from 22:00 on 2/27] South African diamond rough (sawable) 0.083ct rough Sale price¥32,800

[On sale at 10pm on 2/26] Brazilian pink tourmaline 0.772ct loose stone Sale price¥12,800

[2/27 22:00 Sale] Sri Lankan Magnetite 6.245ct Loose Stone, Japan-Germany Exchange Sale price¥22,800

非加熱ブラジル産パライバトルマリン 0.070ctルース（CuO:1.9%、MnO:2.2%）

[On sale from 10pm on 2/26] Unheated Brazilian Paraiba Tourmaline 0.070ct loose stone (CuO: 1.9%, MnO: 2.2%) Sale price¥55,800

[On sale at 22:00 on 2/26] Sri Lankan yellow sapphire 0.297ct loose stone Sale price¥8,800

[On sale from 10pm on 2/25] Brazilian Alexandrite 0.118ct loose stone Sale price¥25,800

[On sale from 22:00 on 2/25] Sri Lankan yellow sapphire 0.300ct loose Sale price¥12,800

[On sale at 22:00 on 2/25] Ruby 0.302ct loose Sale price¥9,800

[On sale at 22:00 on 2/25] Mozambique Almandine Garnet 1.359ct Loose Sale price¥9,800

[On sale at 10pm on 2/26] Colombian Trapiche Emerald 0.811ct loose stone Sale price¥59,800

[On sale at 22:00 on 2/24] Mozambique Almandine Garnet 1.237ct Loose Sale price¥12,800

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