Login

¥5,000 - ¥10,000

Sort by
[On sale from 10pm on 4/4] [Jeweler's Tools] [Limited Quantity] Chelsea Color Filter Emerald 2-piece Set

[On sale from 10pm on 4/4] [Jeweler's Tools] [Limited Quantity] Chelsea Color Filter Emerald 2-piece Set Sale price¥6,980
[On sale from 10pm on 4/6] [Limited to 13 stones] Namibian Jeremejevite (Elemejevite) 1 loose stone [Multiple purchase discounts available]

[On sale from 10pm on 4/6] [Limited to 13 stones] Namibian Jeremejevite (Elemejevite) 1 loose stone [Multiple purchase discounts available] Sale price¥5,980
[On sale from 10pm on 4/6] [Limited to 9 stones] 1 loose Brazilian Elestial Amethyst (average 2.5ct) [Multiple purchase discounts available]

[On sale from 10pm on 4/6] [Limited to 9 stones] 1 loose Brazilian Elestial Amethyst (average 2.5ct) [Multiple purchase discounts available] Sale price¥5,980
[On sale at 10pm on 3/29] {Only one left} 1 neon blue apatite loose stone from Madagascar (special cut, average 0.8ct) {Multiple purchase discounts available}

[On sale at 10pm on 3/29] {Only one left} 1 neon blue apatite loose stone from Madagascar (special cut, average 0.8ct) {Multiple purchase discounts available} Sale price¥5,980
[On sale from 10pm on 4/5] Limited to 13 stones, 1 red spinel rough stone from Myanmar [Multiple purchase discounts available]

[On sale from 10pm on 4/5] Limited to 13 stones, 1 red spinel rough stone from Myanmar [Multiple purchase discounts available] Sale price¥6,980
[On sale from 10pm on 4/5] Myanmar gray spinel, platinum spinel (2mm, round cut) 1 loose stone {Multiple purchase discounts available}

[On sale from 10pm on 4/5] Myanmar gray spinel, platinum spinel (2mm, round cut) 1 loose stone {Multiple purchase discounts available} Sale price¥5,980
[On sale from 10pm on 4/20] {Limited to 3 stones} Gem gacha💎Black star sapphire (including 12-ray star) loose stone from Bangkacha, Thailand

[On sale from 10pm on 4/20] {Limited to 3 stones} Gem gacha💎Black star sapphire (including 12-ray star) loose stone from Bangkacha, Thailand Sale price¥6,980
ブルーサファイア 3.9mm/0.280ctルース

[On sale 4/2 at 10pm] Blue sapphire 3.9mm/0.280ct loose stone Sale price¥9,800
タンザニア産サンストーン（イリュージョンサンストーン） 0.381ctルース

[On sale 4/2 at 10pm] Tanzanian Sunstone (Illusion Sunstone) 0.381ct Loose Sale price¥7,980
ブラジル産サンタマリアアクアマリン 0.240ctルース

[On sale 4/2 at 10pm] Brazilian Santa Maria Aquamarine 0.240ct loose stone Sale price¥8,800
エメラルド 0.138ctルース

[On sale from 10pm on 4/1] Emerald 0.138ct loose stone Sale price¥6,980
メキシコ産カンテラオパール 6.629ctルース

[On sale 4/1 at 22:00] Mexican Cantera Opal 6.629ct loose stone Sale price¥9,800
インド産アイオライトサンストーン 0.320ctルース

[On sale from 10pm on 4/1] Indian Iolite Sunstone 0.320ct Loose Sale price¥8,800
タンザニア産タンザナイト 0.250ctルース

[On sale from 10pm on 4/1] Tanzanite from Tanzania 0.250ct loose stone Sale price¥8,800
ダイヤモンド 0.091ctルース(G, SI2)

[On sale at 10pm on March 29th] Diamond 0.091ct loose stone (G, SI2, sector cut) Sale price¥9,800
ブラジル産シトリン 2.641ctルース

[On sale 4/2 at 10pm] Brazilian citrine 2.641ct loose stone Sale price¥8,800
サンストーン（イリュージョンサンストーン） 1.934ctルース

[On sale from 10pm on 4/6] Sunstone (Illusion Sunstone) 1.934ct loose stone Sale price¥8,800
ベトナム産コバルトスピネル 0.075ct原石（カラーシフト）

[On sale from 22:00 on 4/2] Vietnam-made cobalt spinel 0.075ct rough stone (color shift) Sale price¥5,980
ベトナム産コバルトスピネル 0.078ct原石

[On sale 4/4 at 10pm] Vietnam Cobalt Spinel 0.078ct Rough Stone Sale price¥8,800
ベトナム産コバルトスピネル 0.085ct原石

[On sale from 22:00 on 4/2] Vietnam-made cobalt spinel 0.085ct rough stone (color shift) Sale price¥5,980
ベトナム産コバルトスピネル 0.088ct原石

[On sale 4/4 at 10pm] Vietnam Cobalt Spinel 0.088ct Rough Stone Sale price¥8,800
ベトナム産コバルトスピネル 0.091ct原石

[On sale at 22:00 on 4/4] Vietnam Cobalt Spinel 0.091ct Rough Stone Sale price¥8,800
ミャンマー産レッドスピネル 0.218ct原石

[On sale at 22:00 on 4/5] Myanmar red spinel 0.218ct rough Sale price¥8,800
レッドスピネル 原石

[On sale at 22:00 on 4/6] Myanmar red spinel 0.236ct rough Sale price¥9,800
[On sale from 10pm on 4/5] Limited to 8 stones, 1 red spinel rough stone from Myanmar [Multiple purchase discounts available]

[On sale from 10pm on 4/5] Limited to 8 stones, 1 red spinel rough stone from Myanmar [Multiple purchase discounts available] Sale price¥5,980
レッドスピネル 0.368ct原石

[On sale at 22:00 on 4/6] Myanmar red spinel 0.368ct rough Sale price¥9,800
サンストーン（イリュージョンサンストーン） 2.339ctルース

[On sale from 10pm on 4/6] Sunstone (Illusion Sunstone) 8.2mm/2.339ct loose stone Sale price¥9,800
コッパールチルクォーツ 2.051ctルース

[On sale 4/8 at 10pm] Brazilian copper rutilated quartz 2.051ct loose stone Sale price¥8,800
コッパールチルクォーツ 1.445ctルース

[On sale 4/8 at 10pm] Brazilian copper rutilated quartz 1.445ct loose stone Sale price¥8,800
コッパールチルクォーツ 1.673ctルース

[On sale 4/8 at 10pm] Brazilian copper rutilated quartz 1.673ct loose stone Sale price¥8,800
プレーナイト 3.016ctルース

[On sale at 10pm on 4/8] Prehnite 3.016ct loose stone Sale price¥6,980
カンボジア産ブルージルコン 0.338ctルース

[On sale at 22:00 on 4/17] Cambodian blue zircon 0.338ct loose stone Sale price¥8,800
モンタナサファイア 0.217ctルース

[On sale at 10pm on 4/13] Montana Sapphire 0.217ct Loose (Blue Sapphire) Sale price¥8,800
モンタナサファイア 0.275ctルース

[On sale at 10pm on 4/13] Montana Sapphire 0.275ct Loose (Blue Sapphire) Sale price¥8,800
ブラジル産ゴールデンベリル 1.391ctルース

[On sale 4/13 at 10pm] Brazilian Golden Beryl 7.3mm/1.391ct Loose Sale price¥8,800
【猫カット（チーター柄）】琥珀 8.1mm/0.916ctルース

[On sale from 10pm on 4/11] [Cat cut (cheetah pattern)] Amber 8.1mm/0.916ct loose stone Sale price¥9,800
タンザニア産ペリステライト 0.397ctルース

[On sale at 22:00 on 4/10] Tanzanian Peristerite 5.4mm/0.397ct loose stone Sale price¥7,980
バイカラータンザナイト 0.739ctルース

[On sale at 22:00 on 4/15] Tanzanian bicolor tanzanite 0.739ct loose stone Sale price¥9,800
バイカラーゾイサイト 0.716ctルース

[On sale at 22:00 on 4/13] Tanzanian bicolor zoisite 0.716ct loose stone Sale price¥9,800
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） 0.696ctルース

[On sale from 10pm on 4/12] Andesine Labradorite (also known as Rainbow Moonstone) 6.0mm/0.696ct loose stone Sale price¥9,800
ヴァイオレットサファイア 0.300ctルース

[On sale at 22:00 on 4/15] Madagascar Violet Sapphire 4.0mm/0.300ct Loose Sale price¥8,800
ヴァイオレットサファイア 0.265ctルース

[On sale at 10pm on 4/15] Violet sapphire 3.9mm/0.265ct loose stone Sale price¥8,800
マダガスカル産ヴァイオレットサファイア 0.462ctルース

[On sale at 10pm on 4/12] Madagascar Violet Sapphire 4.6mm/0.462ct Loose Sale price¥9,800
カンボジア産カラーレスジルコン 0.749ctルース

[On sale at 10pm on 4/12] Cambodian colorless zircon 0.749ct loose stone Sale price¥8,800
カンボジア産カラーレスジルコン 0.707ctルース

[On sale at 10pm on 4/12] Cambodian colorless zircon 0.707ct loose stone Sale price¥8,800
ブルージルコン 0.431ctルース

[On sale at 10pm on 4/12] Cambodian blue zircon 0.431ct loose stone Sale price¥7,980
】【猫カット（豹柄）】琥珀 8.0mm/0.664ctルース

[On sale from 10pm on 4/11] [Cat cut (leopard print)] Amber 8.0mm/0.664ct loose stone Sale price¥9,800
ナイジェリア産グリーンベリル 0.253ctルース

[On sale from 10pm on 4/11] Nigerian green beryl 0.253ct loose stone Sale price¥6,980

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