Birthstone list

《Yurakucho Marui 2024112 takeout》Brazilian Imperial Topaz 0.744ct loose stone Sale price¥12,800

Tanzanite from Tanzania 0.272ct loose stone Sale price¥8,800

Tanzanian green sapphire 0.303ct loose stone Sale price¥9,800

Sri Lankan Yellow Sapphire 0.267ct Loose Sale price¥14,800

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） 0.138ctルース

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.138ct Loose Stone Sale price¥14,800

Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.176ct Loose Stone Sale price¥16,800

[On sale at 10pm on 7/29] Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.128ct Loose Sale price¥12,800

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.108ct Loose Stone Sale price¥9,800

Colombian emerald 0.840ct rough stone Sale price¥9,800

[12551956] Colombian emerald rough stone 1.241ct Sale price¥18,800

[12551957] Colombian emerald 0.503ct rough stone Sale price¥7,980

《Yurakucho Marui 2024112 takeout》Colombian mint color emerald 0.297ct loose stone Sale price¥9,800

Unheated Brazilian Paraiba Tourmaline 0.053ct loose stone (CuO: 1.4%, MnO: 3.1%) Sale price¥62,800

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） 1.005ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 1.005ct loose Sale price¥11,000

[Posted in 12549680] Montana Sapphire 0.246ct loose Sale price¥8,800

[12549603 published] Yellow sapphire 0.773ct loose Sale price¥14,800

[12550851] 2.944ct Mozambique pink tourmaline loose stone Sale price¥49,800

[12550838] Brazilian Limonite in Topaz 4.680ct Loose Stone Sale price¥11,800

[Published on 12552111] Colombian mint color emerald 0.497ct loose stone Sale price¥15,800

[12545602] Paraiba Tourmaline from Mozambique 0.321ct loose stone Sale price¥15,800

【スタッフセレクション】マダガスカル産バイカラーサファイア 0.330ctルース（セミオーダーメイドセット）

[Staff Selection] Madagascar Bicolor Sapphire 0.330ct Loose (Semi-Custom Made Set) Sale price¥47,800

【スタッフセレクション】サンタマリアアクアマリン 0.257ctルース（セミオーダーメイドセット）

[Staff Selection] Brazilian Santa Maria Aquamarine 0.257ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

[12549449 published] Montana Sapphire 0.263ct loose Sale price¥8,800

《Yurakucho Marui 2024112 takeout》Australian black opal 1.057ct loose Sale price¥39,800

[12551529] Australian black opal 2.233ct loose stone Sale price¥69,800

[12550768] Salt and pepper diamond 0.310ct loose stone Sale price¥49,800

Unheated Brazilian Paraiba Tourmaline 0.047ct loose stone (CuO: 1.6%, MnO: 2.4%) Sale price¥98,000

[12551590] Ruby 0.282ct loose stone Sale price¥11,800

[12551148] Australian black opal 3.890ct loose stone Sale price¥69,800

Brazilian Imperial Topaz 0.431ct Loose Stone (Yurakucho Marui 2024112) Sale price¥9,800

モザンビーク産パライバトルマリン 0.784ctルース（CuO:0.3%,MnO:1.3%）

[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone Sale price¥128,000

{Yurakucho Marui 2024112 takeout} American Anthill Garnet 6mm/0.896ct loose stone Sale price¥29,800

Paraiba Tourmaline from Mozambique 0.360ct loose stone Sale price¥18,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 1.079ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 6.1mm/1.079ct loose stone Sale price¥18,800

《Yurakucho Marui 2024112 takeout》Colombian emerald 1.140ct rough stone Sale price¥19,800

非加熱ブラジル産パライバトルマリン 0.065ctルース（CuO:1.6%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.065ct loose stone (CuO: 1.6%, MnO: 2.4%) Sale price¥69,800

Paraiba Tourmaline from Mozambique 0.412ct loose stone Sale price¥22,800

《Yurakucho Marui 2024112 takeout》Brazilian Limonite in Topaz 4.743ct loose stone Sale price¥12,800

Colombian Trapiche Emerald 0.488ct Loose Sale price¥25,800

Paraiba tourmaline 1.190ct raw stone from Brazil Sale price¥4,980

Dreamy 13-stone gemstone set (amethyst, pink sapphire, tanzanite, rhodolite garnet) and half eternity ring set (2.0mm) Sale price¥79,800

Spring-colored gemstone 13-stone set (Madagascar fancy color sapphire) and half eternity ring set (2.0mm) Sale price¥79,800

【KEN氏】ブラジル産グリーントルマリン 5.2mm/0.584ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Brazilian Green Tourmaline 5.2mm/0.584ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

【スタッフセレクション】【KEN氏】ブラジル産トパーズ 1.130ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Brazilian Topaz 1.130ct Loose (Semi-Custom Made Set) Sale price¥47,800

[On sale 10/23 22:00] Madagascar Padparadscha Sapphire 3.6mm/0.197ct Loose DGL Grade Sale price¥22,800

《Yurakucho Marui 2024112 takeout》Opal 0.459ct loose (egg in opal) Sale price¥8,800

Russian rough diamond (sawable) 0.117ct loose Sale price¥29,800

Russian Diamond Rough (Sawable) 0.091ct Loose (Trigon) Sale price¥22,800

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