New and updated on 6/9 (Mon)
【6/14 22時販売】《限定7石》ロシア産アレキサンドライト1石ルース(ラウンドカット,1.3-1.6mm)《複数購入割引有》
Sale price¥6,980
[12555664] Cambodian colorless zircon 1.407ct loose stone
Sale price¥12,800
[12555662] Cambodian colorless zircon 1.806ct loose stone
Sale price¥15,800
[12555600] Tanzanite from Tanzania 0.990ct loose stone
Sale price¥29,800
[12555597] 1.045ct loose Tanzanite from Tanzania
Sale price¥29,800
[12555595] Tanzanite from Tanzania 0.849ct loose stone
Sale price¥28,800
Afghanistan Bicolor Tourmaline 1.653ct Loose Stone
Sale price¥49,800
[12559411] Mexican Hyalite Opal 3.917ct Loose
Sale price¥15,800
[12559409] Mexican Hyalite Opal 1.554ct Loose
Sale price¥7,980
[12556645] Ruby 0.258ct loose stone
Sale price¥18,800
Brazilian unheated pink imperial topaz (sherry pink) 0.348ct loose stone
Sale price¥12,800
[12555660] Oregon Sunstone from the United States 0.596ct loose stone
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.250ct Loose
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.223ct Loose
Sale price¥12,800
【6/14 22時販売】ダイヤモンド 0.245ctルース(E, VS-1,オクタゴン・ブリリアントカット)
Sale price¥39,800
[12556611] Kasharai Amethyst 0.443ct Loose Stone
Sale price¥13,800
[12556609] Kasharai Amethyst 0.454ct Loose Stone
Sale price¥13,800
[12556598] Alexandrite 0.333ct loose stone
Sale price¥89,800
[12559338] Cambodian Blue Zircon (Ratanakiri Blue) 6.771ct Loose
Sale price¥168,000
[12559280] Mozambique Almandine Garnet 0.774ct Loose Stone
Sale price¥8,800
Rhodolite Garnet 1.188ct Loose Stone
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.407ct Loose
Sale price¥15,800
[12555780] Brown diamond 0.389ct loose stone
Sale price¥39,800
[12559413] Mexican Hyalite Opal 0.873ct Loose
Sale price¥9,800
KARATZ collaboration
List of new arrivals
【6/12 22時販売】マダガスカル産スペサルティンガーネット 8.592ctルース
Sale price¥98,000
【6/12 22時販売】メキシコ産ファイアーアゲート 8.69ctルース
Sale price¥14,800
【6/12 22時販売】メキシコ産ファイアーアゲート 5.86ctルース
Sale price¥14,800
【6/12 22時販売】マダガスカル産アンダリュサイト 4.6mm/0.369ctルース
Sale price¥5,980
【6/12 22時販売】ドミニカ共和国産コンクパール(火焔模様有り) 0.960ctルース
Sale price¥18,800
【6/12 22時販売】ドミニカ共和国産コンクパール(火焔模様有り) 0.950ctルース
Sale price¥15,800
【6/12 22時販売】ナイジェリア産ピンクトルマリン 1.140ctルース(ピクセルカット)
Sale price¥6,980
【6/11 22時販売】ブラジル産マデイラシトリン 6.8mm/1.110ctルース
Sale price¥4,980
【6/11 22時販売】スイートホーム産ロードクロサイト 2.7mm/0.108ctルース
Sale price¥12,800
【6/11 22時販売】【甲州貴石切子】コニャックジルコン 10.930ctルース《コラボ》ワッペン
Sale price¥39,800
【6/10 22時販売】メキシコ産ファイアオパール 0.448ctルース
Sale price¥3,980
【6/11 22時販売】【甲州貴石切子】ヘマタイトインクォーツ 5.155ctルース ワッペン
Sale price¥45,800
【6/10 22時販売】ケニア産ゴールドシーンサファイア 0.257ctルース
Sale price¥19,800
【6/10 22時販売】バイカラーフローライト 93.272ctルース
Sale price¥19,800
[On sale at 22:00 on 6/8] Afghanistan Hackmanite 0.212ct loose stone
Sale price¥8,800
[On sale 6/8 at 22:00] Mexican Fire Opal 1.190ct Loose (Contralus Opal)
Sale price¥12,800
[On sale at 22:00 on 6/8] Brazilian green tourmaline 4.613ct loose stone
Sale price¥39,800
[6/7 22:00 Sale] Ethiopian Opal 7.2mm/0.910ct Loose Stone
Sale price¥6,980
[On sale 6/6 at 22:00] Brazilian Rainbow Aquamarine 3.308ct Loose
Sale price¥29,800
[On sale 6/6 at 22:00] Brazilian Rainbow Aquamarine 3.188ct Loose
Sale price¥22,800
[On sale 6/6 at 22:00] Brazilian Rainbow Aquamarine 2.698ct Loose
Sale price¥22,800
[On sale at 22:00 on 6/4] Namibian Jeremejevite 0.055ct loose stone
Sale price¥5,980
jewelry
Limited Quantity: K18 Yellow Gold Kihei Chain Necklace 1.0mm/1.6g [40cm]
Sale price¥26,800
[Colorful] K18WG Brown Diamond Ring
Sale price¥69,800
K18YG Afghan Kunzite 0.74ct, Tanzanite, Sapphire Ring
Sale price¥79,800
Pt900 Tanzanian Malaya Garnet 2.01ct Diamond Pendant (Necklace)
Sale price¥59,800
Pt900 Kashmir unheated sapphire 1.14ct / diamond 0.70ct ring GIA
Sale price¥1,580,000
Pt900/Pt850 Brazilian Alexandrite 0.2ct Diamond Pendant (Necklace)
Sale price¥79,800
Pt900/Pt850 Australian Black Opal 0.37ct Diamond 0.73ct Necklace
Sale price¥198,000
K18YG Brazilian Paraiba Tourmaline 0.30ct Diamond Ring GIA
Sale price¥198,000
K18PG Sri Lankan Yellow Sapphire 0.31ct Green Garnet Ring
Sale price¥89,800
K18YG Sri Lankan chrysoberyl cat's eye 0.69ct chrysoprase ring
Sale price¥79,800
K18YG Brazilian Paraiba Tourmaline 0.203ct Pink Diamond Ring
Sale price¥98,000
K18 sea blue chalcedony earrings
Sale price¥25,800
[Published in 22602357] K18 mint garnet 0.513ct ring
Sale price¥79,800
Pt950 Brazilian Paraiba Tourmaline Ring (Fluid Setting, Oval Cut)
Sale price¥64,800
Brazilian Paraiba Tourmaline Ring and Half Eternity Ring Set (1.2mm)
Sale price¥188,000
K18YG American Turquoise 1.04ct Ring (Cat Cut)
Sale price¥79,800
K18WG Tibetan Color Change Andesine 0.764ct Hessonite Garnet Ring
Sale price¥98,000
Pt950 Diamond (Cabochon Cut) 0.131ct Ring
Sale price¥158,000
K18PG Brazilian Paraiba Tourmaline 0.286ct Grandidierite Ring GIA
Sale price¥198,000
K18/Pt950 Afghanistan Green Apatite 0.162ct Ring
Sale price¥198,000
[Dandelion Cut] K18PG Yellow Sapphire 1.927 Ring Japanese-German Edition
Sale price¥298,000
《Products eligible for multiple purchase discount》
Custom-made with a choice of stones
Items under 10,000 yen
【6/12 22時販売】マダガスカル産アンダリュサイト 4.6mm/0.369ctルース
Sale price¥5,980
【6/12 22時販売】ナイジェリア産ピンクトルマリン 1.140ctルース(ピクセルカット)
Sale price¥6,980
【6/11 22時販売】ブラジル産マデイラシトリン 6.8mm/1.110ctルース
Sale price¥4,980
【6/10 22時販売】メキシコ産ファイアオパール 0.448ctルース
Sale price¥3,980
[On sale at 22:00 on 6/8] Afghanistan Hackmanite 0.212ct loose stone
Sale price¥8,800
[6/7 22:00 Sale] Ethiopian Opal 7.2mm/0.910ct Loose Stone
Sale price¥6,980
[On sale at 22:00 on 6/4] Namibian Jeremejevite 0.055ct loose stone
Sale price¥5,980
[On sale 6/8 at 22:00] Australian black opal 0.404ct loose
Sale price¥9,800
[On sale 6/3 at 22:00] Dominican Republic Conch Pearl 0.870ct Loose
Sale price¥8,800
[On sale at 22:00 on 6/6] Pakistani axinite 0.583ct loose stone
Sale price¥8,800
[12559413] Mexican Hyalite Opal 0.873ct Loose
Sale price¥9,800
[12559412] Mexican Hyalite Opal 0.664ct Loose
Sale price¥6,980
[On sale at 22:00 on 6/9] Mexican Hyalite Opal 1.687ct Loose
Sale price¥9,800
[On sale from 10pm on 5/31] Chinese fluorite 16.590ct loose patch
Sale price¥5,980
[On sale 6/3 at 22:00] Sri Lankan Violet Spinel 0.592ct Loose
Sale price¥8,800
[On sale from 10pm on 5/24] Amazon Green Opal 7mm/0.88ct Loose
Sale price¥7,980
[On sale from 10pm on 5/24] American axinite 2.10ct loose stone
Sale price¥9,800
[On sale from 10pm on 5/24] American Axinite 1.630ct loose stone
Sale price¥7,980
jeweler's tools
[Jeweler's Tools] Color change penlight loose set
Sale price¥4,980
[Jeweler's Tools] Digital Caliper Color Shift Amethyst 2 Piece Set
Sale price¥2,980
[Jeweler's Tools] White penlight (for loose), loose 3-piece set
Sale price¥5,980
Jeweler's tool "plate light"
Sale price¥3,800

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 publishes "Gemstone Encyclopedia"
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.