Sale

K18PGマダガスカル産ピンクサファイア0.24ct0.25ctピアス（アッシャーカット）

K18PG Madagascar pink sapphire 0.24ct 0.25ct earrings (Asscher cut) Sale price¥59,800

Madagascar Grandidierite 0.521ct loose stone Sale price¥128,000

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

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） 1.742ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.742ct loose stone Sale price¥37,800

Limited to 18 stones: Myanmar spinel (3.5mm, pentagonal cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980

Brazilian parti-color tourmaline 2.702ct loose stone Sale price¥69,800

【甲州貴石切子plusthree】ロッククリスタル 15mm/10.059ctルース《昴×灯》(ダブル切子タイプ) ワッペン

[Koshu Precious Stone Cut Plusthree] Rock Crystal 15mm/10.059ct Loose Stone "Subaru x Hikaru" (Double Cut Type) Patch Sale price¥45,800

Australian black opal 9.709ct loose stone Sale price¥158,000

Czech Aragonite 8.0mm/2.082ct Loose Stone Sale price¥69,800

Brazilian Rubellite 3.845ct loose stone Sale price¥198,000

Indian Rainbow Quartz (Iridescent Quartz) 0.940ct Loose Stone Sale price¥158,000

Diamond 0.128ct loose stone (cabochon cut, maroon cut) Sale price¥39,800

Limited to 5 stones: 1 synthetic moissanite loose stone (Sanjay cut hexagonal, 6mm) Multiple purchase discounts available Sale price¥8,800

Spanish Andalusite 0.776ct loose stone Sale price¥11,800

Spanish Sphalerite 8mm/2.796ct loose stone Sale price¥69,800

ブラジル産パライバトルマリン 0.620ctルース（CuO：2.72%,MnO：4.93%）GIA&中宝分析

Brazilian Paraiba Tourmaline 0.620ct loose stone (CuO: 2.72%, MnO: 4.93%) GIA & Chuho analysis Sale price¥1,580,000

Colombian pyrite-mica emerald 0.739ct loose stone Sale price¥36,800

Colombian pyrite-mica emerald 0.628ct loose stone Sale price¥35,800

Brazilian Rubellite 1.027ct Loose Stone Sale price¥69,800

ブラジル産パライバトルマリン 0.230ctルース GIA（CuO:0.9%、MnO:1.1%)

Brazilian Paraiba Tourmaline 0.230ct Loose GIA (CuO: 0.9%, MnO: 1.1%) Sale price¥158,000

Benitoite 13 stone half eternity ring set (1.8mm, gradient set) Sale price¥158,000

Limited to 7 sets: Gemstone Encyclopedia Playing Cards + Gemstone Lucky Bag (worth 10,000 yen) with 4 Stones Sale price¥6,000

K18 Indian Iolite Sunstone 0.73ct Tanzanite Ring Sale price¥188,000

K18/Pt950 カンボジア産ブルージルコン0.48ct・パライバトルマリンリング

K18/Pt950 Cambodian Blue Zircon 0.48ct Paraiba Tourmaline Ring Sale price¥89,800

Tanzanian Kornerupine 0.202ct loose stone Sale price¥18,800

January birthstone rhodolite garnet rough stone and loose stone set of 2 (from Zambia) {Multiple purchase discounts available} {For beginners} Sale price¥2,980

April birthstone Morganite rough stone and loose stone set of 2 (from Nigeria) {Multiple purchase discounts available} {For beginners} Sale price¥3,980

March birthstone, aquamarine rough stone and loose stone set of 2 (from Nigeria) {Multiple purchase discounts available} {For beginners} Sale price¥3,980

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

Limited to 6 stones: 1 synthetic moissanite loose stone (hexagonal cut, 5mm) Multiple purchase discounts available Sale price¥6,980

Top Quality: Benitoite 7 Stones and Diamond 6 Stones (H&C) Half Eternity Ring Set (2.0mm) Sale price¥178,000

Brazilian unheated bicolor Paraiba tourmaline 0.178ct loose stone (CuO: 0.9%, MnO: 2.8%) Sale price¥298,000

Tanzania Cobalt Spinel 0.211ct Loose Stone JTL Catalog Sale price¥29,800

Limited to 8 stones: Swiss blue topaz (4mm, rose cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥3,980

Elbaite tourmaline from Mozambique 1.138ct loose stone (CuO: 0.1%, Mn0: 1.6%) Sale price¥59,800

Elbaite tourmaline from Mozambique 2.964ct loose stone (CuO: 0.1%, Mn0: 4.4%) Sale price¥45,800

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） 1.029ctルース

Brazilian unheated pink imperial topaz (sherry pink) 6.4mm/1.029ct loose stone Sale price¥59,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.736ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.736ct loose stone Sale price¥79,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 3.512ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 3.512ct Loose Sale price¥98,000

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.888ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.888ct Loose Sale price¥88,000

Namibian Jeremejevite 0.158ct loose stone Sale price¥45,800

Namibian Jeremejevite 0.405ct loose stone Sale price¥128,000

Namibian Jeremejevite 0.394ct loose stone Sale price¥128,000

Mozambique rubellite 2.752ct loose stone Sale price¥69,800

Mozambique Rubellite 2.141ct Loose Stone Sale price¥69,800

Colombian emerald 0.231ct loose stone Sale price¥28,800

Elbaite tourmaline from Mozambique 1.192ct loose stone (CuO: 0.1%, MnO: 1.5%) Sale price¥59,800

Mexican Fire Opal 0.576ct Loose (Faceted Cut) Sale price¥9,800

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's Initiatives and Social Contributions

We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.

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.