Sale

[Published as 12564055] American Red Beryl 0.239ct Loose Stone Sale price¥69,800

[Posted as 12563996] Australian Black Opal 1.029ct Loose Stone Sale price¥29,800

コロンビア産パイライト・雲母インエメラルド 5.0mm/0.500ctルース鑑別書

[12563912 listed] Colombian Pyrite and Mica in Emerald 0.500ct Loose Stone Sale price¥39,800

Loose White Diamond 0.108ct (FANCY WHITE, I-1) Sale price¥55,800

diamond Sale price¥45,800

【#202607 Akihabara Popup Outtake】【12562793 Listed】Unheated Brazilian Imperial Topaz (Sherry Color) 0.459ct Loose Stone Sale price¥32,800

[#202607 Akihabara Pop-up Store - Currently out on loan] [Listed as 12563392] Tanzanian Red Spinel 0.291ct Loose Stone Sale price¥35,800

Brazilian Paraiba Tourmaline 0.068ct loose stone Sale price¥61,800

[Lottery Sale 0707_06] Kunzite from Afghanistan, 69.722ct Loose Stone Sale price¥258,000

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） 0.459ctルース

[Lottery Sale 0707_08] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.459ct Loose Stone with Certificate Sale price¥69,800

[Lottery Sale 0707_09] Unheated Burmese Sapphire 0.210ct Loose GIA Sale price¥69,800

【Lottery Sale 0731_08】Brazilian Emerald Cat's Eye 6.083ct Loose Gemstone with Japanese and German Gemological Report Sale price¥258,000

インターナリーフローレスダイヤモンド（H&C） 3.8mm/0.206ctルース(D, IF, 3Excellent H&C)

[Lottery Sale 0731_12] Internally Flawless Diamond (H&C) 0.206ct Loose (D, IF, 3Excellent H&C) Sale price¥89,800

[Lottery Sale 0731_09] Burmese Ruby 1.020ct Loose Stone GIA Sale price¥188,000

[Lottery Sale 0628_05] American Neptunite 0.374ct Loose Stone with Gemstone Identification Report Sale price¥79,800

【Lottery Sale 0428_2_05】American Neptunite 0.859ct Loose Gemstone with Certificate Sale price¥128,000

Pt900 カンボジア産ラタナキリブルージルコン 2.22ct・ダイヤモンド0.38ctリング中宝ソ

[Lottery Sale 0725_14] Pt900 Cambodian Blue Zircon (Ratanakiri Blue) 2.22ct Ring with GIA Report Sale price¥158,000

[Lottery Sale 0725_10] Unheated Mozambique Pigeon Blood Ruby 0.430ct Loose Gemstone AIGS Sale price¥98,000

[Lottery Sale 0725_11] Burmese Pigeon Blood Ruby 0.450ct Loose AIGS Sale price¥98,000

[Lottery Sale 0718_08] Tanzanian Pink Zoisite 0.419ct Loose Stone with Gem Identification Report Sale price¥69,800

[Lottery Sale 0725_03] Tanzania Purple Spinel 0.427ct Loose Stone with Certificate Sale price¥29,800

【#202607 Akihabara Pop-up Store - Currently out for display】【12563131 Posted】Brazilian Santa Maria Aquamarine 0.299ct Loose Stone Sale price¥19,800

[#202607 Akihabara Pop-up Store Takeout in Progress] [12562065 Posted] Brazilian Sky Blue Topaz 0.906ct Loose Stone Sale price¥12,800

[#202607 Akihabara Popup Exhibit] [Published in 12563402] Petzottaite, Madagascar, 0.188ct Loose Sale price¥35,800

[Sales start 8/13 10 PM] Limited to 12 Stones! Beryl Gacha where you can win a 12mm camellia-cut Limonite in Beryl or Santa Maria Aquamarine with a certificate of authenticity for 45,800 yen. (Multiple purchase discount available) Sale price¥4,580

[On sale August 12th at 10 PM] "Limited to 15 Stones" Diamond Gacha featuring rare butterfly-cut diamonds "Multiple Purchase Discount Available" Sale price¥5,980

Mini bottle keychain filled with natural stones (11 colors available, multiple purchase discount) Sale price¥4,280

[#202607AkihabaraPopUpOnLoan][12563137 Listed] Brazilian Santa Maria Aquamarine 0.264ct Loose Stone Sale price¥18,800

[#202607 Akihabara Pop-up, Currently Off-site] [12563253 Posted] Afghan Hauyne 0.112ct Loose Stone Sale price¥28,800

【#202607 Akihabara Pop-up Store - Currently Out of Stock】【Colorful】Pt900 Diamond 1.00ct Ring Sale price¥98,000

【#202607 Akihabara Pop-up Store - Currently Removed for Display】[Colorfuri] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate Sale price¥198,000

[#202607 Akihabara Pop-up Store - Currently out on display] [Listed under item 12562542] Australian Black Opal 0.530ct Loose Stone Sale price¥14,800

[#202607 Akihabara Pop-up Store - Currently Removed] [Shinjuku Marui Annex 202605 - Currently Removed] [12559525 Listed] Synthetic Alexandrite 1.409ct Loose Stone Sale price¥39,800

[#202607 Akihabara Pop-up Store Takeout in Progress] [12559784 Posted] Hackmanite 0.110ct Loose Stone Sale price¥22,800

[#202607AkihabaraPopUpTakenOut] [12560302Listed] Magnesioaxinite 0.154ct Loose Sale price¥18,800

【#202607 Akihabara Pop-up Store - Currently at Offsite Location】【Shinjuku Marui Annex 202605 Offsite Location】Lottery Sale 11【For Winners Only】【Published on 12559975】Colombian Non-Oil Emerald 1.760ct Loose GIA Sale price¥1,580,000

[On sale 8/15 at 10 PM JST] Colombian Emerald Gacha featuring Shimizu Kisaki's 8mm Clover In-cut (regularly 79,800 JPY) - only 15 stones available! (Bonus green beryl included) [Multiple purchase discount available] Sale price¥6,980

[On sale August 14th, 10 PM] Limited 10 pieces: Zimbabwe Mint Fluorite Single Stone Loose (average 2.2ct) [Bulk purchase discount available] Sale price¥4,580

[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available" Sale price¥12,800

[#202607 Akihabara Pop-up currently out of office] [Sale starts August 19th, 10 PM JST] Slice Trapiche Diamond 0.228ct Loose Sale price¥18,800

[Sale begins August 10th, 10 PM JST] Pt850 Venetian Chain, approx. 60cm (with adjuster) Sale price¥59,800

カメレオンダイヤモンド 0.255ctルース(FANCY LIGHT GRAYISH GREENISH YELLOW（カメレオン）, SI-2)

[On Sale 8/13 at 10 PM] Chameleon Diamond 0.255ct Loose (FANCY LIGHT GRAYISH GREENISH YELLOW (Chameleon), SI-2) Sale price¥79,800

イエローダイヤモンド 0.144ctルース(FANCY VIVID YELLOW, SI-2)

[Sale on August 13th at 10 PM] Yellow Diamond 3.2mm/0.144ct Loose (FANCY VIVID YELLOW, SI-2) Sale price¥55,800

[On sale August 9, 10 PM] Nigerian Indicolite Tourmaline 0.241ct Loose Stone with Certification Sale price¥25,800

[Sales begin 8/9 10 PM JST] Afghanite from Afghanistan, 0.018ct Loose Stone with Certificate Sale price¥5,980

【Sales start: August 13, 10 PM JST】Loose Zimbabwe Sphene, 0.512 ct, with certificate Sale price¥17,800

[On sale August 13 at 10 PM] 0.356ct Zimbabwe Sphene Loose Stone with Certificate Sale price¥12,800

[On sale August 9, 10 PM] Australian Opal 0.674ct Loose Stone with Certificate 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'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.