Product list

Pt900 アコヤ真珠（アコヤパール）10.2mm・ダイヤモンド0.23ctリング鑑別書

[Published in 22602657] [Colorful] Pt900 Akoya Pearl Ring Sale price¥98,000

[On sale July 26th at 10 PM] Nepali Kyanite 2.461ct Loose Stone Sale price¥12,800

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 3.219ctルース

[On sale July 26th at 10 PM] Nara Prefecture, Tenkawa Village Rainbow Garnet (Andradite Garnet) 3.219ct Loose Stone Sale price¥24,800

[On sale from 12:00 PM on Thursday, July 30] Adult Sebonstar 4th Edition "Swan Tiara Pendant" Precious Model Pt950 Sale price¥198,000

[On Sale 12 PM JST on Thursday, July 30] Adult Sebonstar Vol. 4 "Swan Tiara Pendant" Silver Model (Silver Color) SV925 & Rhodium Plating Sale price¥29,800

[Listed as 12562727] Pink Imperial Topaz 1.907ct Loose Stone Sale price¥118,000

[Posted as 12562691] Malawi Bicolor Zircon 2.082ct Loose Sale price¥128,000

Pt900 インペリアルトパーズ 3.88ct・ダイヤモンド0.26ct リング鑑別書

[Sales start July 29, 10 PM JST] [COLORFUL] Pt900 Imperial Topaz 3.88ct / Diamond 0.26ct Ring with Appraisal Report Sale price¥258,000

ピンクダイヤモンド 2.2mm/0.044ctルース(FANCY LIGHT PURPLE PINK, SI1)

[On sale July 26, 10 PM] Pink Diamond 2.2mm/0.044ct Loose (FANCY LIGHT PURPLE PINK, SI1) Sale price¥39,800

ダイヤモンド 3.0mm/0.105ctルース(F, VVS2, VeryGood)

[On sale 10 PM, July 26] Diamond 3.0mm/0.105ct Loose Stone (F, VVS2, VeryGood) Sale price¥19,800

ピンクダイヤモンド 0.073ctルース(FANCY LIGHT PURPLE PINK, SI2)

[On Sale July 31, 10 PM JST] Pink Diamond 0.073ct Loose (FANCY LIGHT PURPLE PINK, SI2) Sale price¥39,800

ダイヤモンド（ハート＆キューピッド）3.0mm/0.226ctルース(G, VVS-1, 3Excellent H&C)

[On sale 10 PM, July 26] Diamond (Hearts & Arrows) 3.0mm/0.226ct Loose (G, VVS-1, 3Excellent H&C) Sale price¥46,800

Pt900/Pt850 ダイヤモンド 4.0mm/0.29ct 一粒ペンダント（ネックレス）

[On Sale 7/26 at 10 PM] [Colorfri] Pt900/Pt850 Diamond 4.0mm/0.29ct Solitaire Pendant (Necklace) Sale price¥35,800

Pt900/K18WG ダイヤモンド0.50ct ・ダイヤモンド0.07ctペンダント（ネックレス）

[On Sale 7/29 10 PM] [COLORFULI] Pt900/K18WG 0.50ct Diamond / 0.07ct Diamond Pendant (Necklace) Sale price¥89,800

[Sales begin 7/31 10 PM JST] [Colorflee] K18WG Diamond 0.30ct Earrings Sale price¥29,800

Pt850/K14WG アップルグリーンダイヤモンド0.38ct・ダイヤモンド0.50ct ピアス鑑別書

[On sale July 30, 10 PM] [Colorfri] Pt850/K14WG Apple Green Diamond 0.38ct / Diamond 0.50ct Earrings with appraisal report Sale price¥98,000

【Sales start July 29, 10 PM】[Colorfle] Pt900 Ruby 0.69ct, Diamond 0.16ct Ring with appraisal report Sale price¥188,000

[On sale July 28th at 10 PM] Colombia Cosquez Trapiche Emerald 0.184ct Loose, with identification certificate Sale price¥25,800

[On Sale 7/25 at 10 PM JST] Colombia Cosquez Mine Trapiche Emerald 0.177ct Loose Stone with Certificate Sale price¥29,800

[On sale July 28, 10 PM JST] Colombia, Cosquez Trapiche Emerald, 0.157 ct Loose Stone with Certificate Sale price¥22,800

[Sale starts July 25th at 10 PM] Colombian Cosquez Mine Trapiche Emerald 0.144ct Loose Stone with Certification Sale price¥22,800

[Sales Start: July 25th, 10 PM JST] Colombia Cosquez Mine Trapiche Emerald 0.138ct Loose Stone with Certification Sale price¥19,800

[On sale July 24 at 10 PM] Spanish Bicolor Sphalerite 6.6mm/1.521ct Loose Stone Sale price¥22,800

[On sale July 26th at 10 PM] Spanish Sphalerite 6.5mm/1.321ct Loose Stone Sale price¥19,800

[On sale July 27th at 10 PM] Brazilian color change fluorite, 1.099 ct loose stone Sale price¥9,800

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.240ctルース

[On Sale 7/27 10 PM] Nara Prefecture, Tenkawa Village Rainbow Garnet (Andradite Garnet) 3.5mm/0.240ct Loose Stone Sale price¥8,800

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.336ctルース

[On Sale 7/27 10 PM] Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 3.8mm/0.336ct Loose Stone Sale price¥9,800

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 3.9mm/0.378ctルース（ローズカット）

[On Sale July 24 at 10 PM] Nara Prefecture, Tenkawa Village Rainbow Garnet (Andradite Garnet) 3.9mm/0.378ct Loose Stone (Rose Cut) Sale price¥9,800

[On sale July 26th, 10 PM JST] Madagascar Apatite 0.608ct Loose Gemstone Sale price¥8,800

【On sale at 10 PM on July 26】Kochi Prefecture red coral 1.439ct loose gemstone Sale price¥9,800

[On sale July 26th at 10 PM] Kochi Prefecture Red Coral 0.978ct Loose Stone Sale price¥9,800

【Sales start 10 PM, July 26 JST】Kochi Prefecture Blood Coral Loose Stone 1.128ct Sale price¥9,800

[On sale July 28th at 10 PM] Kochi Prefecture produced blood coral 1.238ct loose stone Sale price¥9,800

【Sales start: July 28, 10 PM JST】Kochi Prefecture Produced Blood Coral 1.286ct Loose Stone Sale price¥9,800

【For Sale July 28, 10 PM JST】Kochi Prefecture Red Coral Loose Stone 1.379 ct Sale price¥11,800

[On sale July 26th at 10 PM] Kochi Prefecture Red Coral 1.321ct Loose Stone Sale price¥9,800

[Available 7/28 10 PM JST] Colombian Emerald, 4.5mm/0.286ct Loose Gemstone, Hoki-kyo Sale price¥69,800

【7/29 10 PM Sale】Colombian Emerald Cat's Eye 0.060ct Loose Stone (Houseki Kyo Appraisal) Sale price¥15,800

【Sales start: July 30, 10 PM JST】Tanzanian Bi-Color Grossular Garnet 0.319ct Loose Stone Sale price¥19,800

[On sale July 26th at 10 PM] Madagascar Padparadscha Sapphire 3.4mm/0.208ct Loose Stone with Central Gem Lab Certificate Sale price¥45,800

[On sale July 31, 10 PM JST] Madagascar Padparadscha Sapphire 3.5mm/0.234ct Loose Stone with Central Gemological Laboratory certificate Sale price¥49,800

[Sale begins August 5th at 10 PM] Colombian Emerald 0.792ct Loose Stone with Certification Sale price¥39,800

[On sale August 5th at 10 PM] Afghan Green Hauyne 0.086ct Loose Stone with Certificate Sale price¥22,800

[On sale July 28th at 10 PM] Cambodian Blue Zircon (Ratanakiri Blue) 1.360ct Loose Stone with Certificate Sale price¥18,800

[On sale 7/28 10 PM] USA Oregon Sunstone 6.7mm/1.032ct Loose Stone Sale price¥18,800

[Sale on Aug 1st at 10 PM] Afghan Hauyne 0.185ct Loose Stone with Certificate Sale price¥65,800

Brazilian Golden Beryl 7.2mm/1.369ct Loose Stone with Certificate of Authenticity (Sale begins August 2nd at 10 PM JST) Sale price¥7,980

[12563386 posted] Brazilian Dioptase 0.487ct Loose Stone Sale price¥12,800

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.