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Additional charges (ring size) Sale price¥1,000
【石から選ぶセミオーダーペンダント枠】リーリウム

Twin Stars《Semi-Custom Pendant Frame》 Sale price¥47,800

Additional charge (metal combination) + 7,000 yen Sale price¥7,000
ピンクスターサファイア 0.619ctルース

Pink star sapphire 0.619ct loose Sale price¥7,980
コンクパール 0.066ctルース

Conch pearl 0.066ct loose Sale price¥6,980
スリランカ産エンスタタイト 2.159ctルース

Sri Lankan enstatite 2.159ct loose Sale price¥15,800
Mexican Hyalite Opal 2.592ct loose

Mexican Hyalite Opal 2.592ct loose Sale price¥9,800
スイスブルートパーズ 26.821ctルース

[Koshu precious stone Kiriko plusthree] Swiss blue topaz 26.821ct loose Sale price¥59,800
ブラジル産パライバトルマリン 0.240ctルース

Paraiba tourmaline from Brazil 4.1mm/0.240ct loose Sale price¥14,800
Moloxite from Madagascar 1 stone loose (green apatite, oval cut)《Multiple purchase discount available》

Moloxite from Madagascar 1 stone loose (green apatite, oval cut)《Multiple purchase discount available》 Sale price¥2,980
[Limited to 18 stones] [Mr. KEN] 1 stone loose Andalusite from Spain (Rose cut, 4.0mm) [Multiple purchase discount] [Yuichiro Abe's work motif]

[Limited to 18 stones] [Mr. KEN] 1 stone loose Andalusite from Spain (Rose cut, 4.0mm) [Multiple purchase discount] [Yuichiro Abe's work motif] Sale price¥5,980
ブラジル産グリーンクォーツ1石ルース（10mm）

[Limited to 9 stones] Brazilian green quartz 1 stone loose (10mm) [Multiple purchase discount available] Sale price¥3,980
Limited to 6 stones: 1 topaz rough stone (November birthstone) Multiple purchase discounts available

Limited to 6 stones: 1 topaz rough stone (November birthstone) Multiple purchase discounts available Sale price¥3,980
合成モアッサナイト 8.417ctルース

Synthetic Moissanite 8.417ct Loose Stone Sale price¥49,800
[Option] Milling

[Option] Milling Sale price¥5,000

Additional charge for resizing: 25,000 yen Sale price¥25,000
Andesine Labradorite (also known as Rainbow Moonstone) 1.009ct loose stone

Andesine Labradorite (also known as Rainbow Moonstone) 1.009ct loose stone Sale price¥12,800
Limited to 23 stones: 1 Ethiopian opal loose stone (sphere, 4.5-5.0mm) Multiple purchase discounts available

Limited to 23 stones: 1 Ethiopian opal loose stone (sphere, 4.5-5.0mm) Multiple purchase discounts available Sale price¥5,980
Limited to 7 stones: 1 loose stone of spinel (blue/purple) from Madagascar. Discounts available for multiple purchases.

Limited to 7 stones: 1 loose stone of spinel (blue/purple) from Madagascar. Discounts available for multiple purchases. Sale price¥3,980
Limited to 4 stones: 1 Brazilian Alexandrite loose stone (rose cut, 3.3mm/average 0.13ct) Multiple purchase discounts available

Limited to 4 stones: 1 Brazilian Alexandrite loose stone (rose cut, 3.3mm/average 0.13ct) Multiple purchase discounts available Sale price¥12,800
Limited to 9 stones: 1 Brazilian Alexandrite loose stone (rose cut, 3mm/average 0.105ct) Multiple purchase discounts available

Limited to 9 stones: 1 Brazilian Alexandrite loose stone (rose cut, 3mm/average 0.105ct) Multiple purchase discounts available Sale price¥9,800
Limited to 8 stones: Swiss blue topaz (4mm, rose cut) 1 loose stone. Discounts available for multiple purchases.

Limited to 8 stones: Swiss blue topaz (4mm, rose cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥3,980
November birthstone citrine rough and loose stone set of 2 (Madeira citrine, from Brazil) {Multiple purchase discounts available} {For beginners}

November birthstone citrine rough and loose stone set of 2 (Madeira citrine, from Brazil) {Multiple purchase discounts available} {For beginners} Sale price¥3,980
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） 1.911ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.911ct loose stone Sale price¥39,800
ブラジル産パライバトルマリンリング・ハーフエタニティリングセット（1.2mm）

Brazilian Paraiba Tourmaline Ring and Half Eternity Ring Set (1.2mm) Sale price¥188,000
Limited to 12 stones Tanzanian Milky Opal Cat's Eye (7.5 x 5.5 mm) Multiple purchase discounts available

Limited to 12 stones Tanzanian Milky Opal Cat's Eye (7.5 x 5.5 mm) Multiple purchase discounts available Sale price¥3,980
Rose-cut beryllium-treated sapphire, 1 loose stone (4mm, September birthstone) {Multiple purchase discounts available}

Rose-cut beryllium-treated sapphire, 1 loose stone (4mm, September birthstone) {Multiple purchase discounts available} Sale price¥1,580
Tanzanite rough and loose stone set of 2 (average 3.3ct, special cut) from Tanzania {Multiple purchase discounts available}

Tanzanite rough and loose stone set of 2 (average 3.3ct, special cut) from Tanzania {Multiple purchase discounts available} Sale price¥6,980
Limited to 6 stones: 1 loose Madagascar needle-in topaz (average 2.1 carats) Multiple purchase discounts available

Limited to 6 stones: 1 loose Madagascar needle-in topaz (average 2.1 carats) Multiple purchase discounts available Sale price¥4,980
Limited to 5 stones Leopard print cat cut KARATZ collaboration (Amber, 8.5mm) Multiple purchase discounts available

Limited to 5 stones Leopard print cat cut KARATZ collaboration (Amber, 8.5mm) Multiple purchase discounts available Sale price¥12,800
Madeleine "Semi-custom ring setting"

Madeleine "Semi-custom ring setting" Sale price¥74,800
Madeleine "Semi-custom ring setting"

Madeleine "Semi-custom ring setting" Sale price¥74,800
Central Gem Research Institute Non-heated Issuance fee for certificate of authenticity (optional)

Central Gem Research Institute Non-heated Issuance fee for certificate of authenticity (optional) Sale price¥8,000
Limited to 8 pieces: 1 Nigerian Morganite loose stone (April birthstone, average 1 carat) Multiple purchase discounts available

Limited to 8 pieces: 1 Nigerian Morganite loose stone (April birthstone, average 1 carat) Multiple purchase discounts available Sale price¥4,980
Limited to 4 stones: 1 bicolor grossular garnet from Tanzania (multiple purchase discounts available)

Limited to 4 stones: 1 bicolor grossular garnet from Tanzania (multiple purchase discounts available) Sale price¥5,980
コーネルピン 0.301ctルース

Tanzanian Kornerupine 0.301ct loose stone Sale price¥25,800
タンザナイト 0.531ctルース

Tanzanite from Tanzania 4.9mm/0.531ct loose stone Sale price¥12,800
マダガスカル産パープルサファイア 0.315ctルース

Madagascar Purple Sapphire 0.315ct Loose Sale price¥12,800
カラーチェンジジルコン 0.596ctルース

Myanmar color change zircon 0.596ct loose stone Sale price¥39,800
合成ブラックオパール 1.209ctルース

Synthetic black opal 1.209ct loose stone Sale price¥18,800
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） 0.423ctルース

Brazilian unheated pink imperial topaz (sherry pink) 0.423ct loose stone Sale price¥15,800
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） 0.586ctルース

Brazilian unheated pink imperial topaz (sherry pink) 0.586ct loose stone Sale price¥15,800
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） 0.284ctルース

Brazilian unheated pink imperial topaz (sherry pink) 0.284ct loose stone Sale price¥15,800
ブラジル産バイカラートパーズ 1.932ctルース

Brazilian bicolor topaz 1.932ct loose stone Sale price¥18,800
ブラジル産ゴールデンベリル 1.391ctルース

Brazilian Golden Beryl 7.3mm/1.391ct Loose Stone Sale price¥8,800

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.

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZの取り組みと社会貢献

業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。

KARATZ Books

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.