• Login/New registration
  • All items
  • FAQ
  • inquiry
  • See reviews

Product list

Sort by
【12523150掲載】レッドベリル 0.127ctルース

Red beryl 0.127ct loose Sale price¥49,800
【12523149掲載】レッドベリル 0.100ctルース

Red beryl 0.100ct loose Sale price¥35,800
【12523145掲載】タンザナイト 6.320ctルース

Tanzanite 6.320ct loose Sale price¥128,000
Benitoite 0.076ct loose

Benitoite 0.076ct loose Sale price¥25,800
【12523141掲載】ベニトアイト 0.075ctルース

Benitoite 0.075ct loose Sale price¥25,800
【12523140掲載】ベニトアイト 0.074ctルース

Benitoite 0.074ct loose Sale price¥19,800
【12523137掲載】ベニトアイト 0.052ctルース

Benitoite 0.052ct loose Sale price¥19,800
【12523039掲載】ベニトアイト 0.205ctルース

Benitoite 0.205ct loose (with crystalline mineral inclusions) Sale price¥98,000
【12523071掲載】ピンクトルマリン 0.550ctルース

Pink tourmaline 0.550ct loose Sale price¥3,980
【12523002掲載】ファイアオパール 0.473ctルース

Fire opal 0.473ct loose Sale price¥8,800
【12522989掲載】モルガナイト 0.678ctルース

Beryl 0.678ct loose stone Sale price¥5,980
[Option] Paraiba tourmaline analysis report attached identification certificate issuance fee

[Option] Paraiba tourmaline analysis report attached identification certificate issuance fee Sale price¥15,000
【12522965掲載】イエローサファイア 0.231ctルース

Yellow sapphire 0.231ct loose Sale price¥4,980
Bicolor sapphire 0.302ct loose

Bicolor sapphire 0.302ct loose Sale price¥6,980
【12522916掲載】スフェーン 0.540ctルース

Sphene 0.540ct loose Sale price¥12,800
【12522915掲載】スフェーン 0.490ctルース

Sphene 2 stone pair 0.490ct loose Sale price¥12,800
【12522914掲載】スフェーン 0.480ctルース

Sphene 2 stone set 0.480ct loose Sale price¥12,800
【12522913掲載】スフェーン 0.470ctルース

Sphene 2 stone set 0.47ct loose Sale price¥11,800
Fire Opal (Common Opal) 2 stone set《Discount available for multiple purchases》

Fire Opal (Common Opal) 2 stone set《Discount available for multiple purchases》 Sale price¥3,980
Fancy Deep Yellowish Green Diamond (Treatment) 1.570ct Loose (FANCY DEEP YELLOWISH GREEN, VS2) with GIA

Fancy Deep Yellowish Green Diamond (Treatment) 1.570ct Loose (FANCY DEEP YELLOWISH GREEN, VS2) with GIA Sale price¥398,000
【12522867掲載】イエローサファイア 1.110ctルース

Yellow sapphire 1.110ct loose Sale price¥19,800
【12522735掲載】レインボースキャポライト 0.859ctルース

Rainbow Scapolite 0.859ct loose Sale price¥9,800
【11522807掲載】エメラルド 0.104ctルース

Emerald 0.104ct loose (sugar loaf) Sale price¥16,800
【12522691掲載】スタークォーツ 35.760ctルース

Star quartz 35.760ct loose Sale price¥14,800
【12522673掲載】ジルコン 0.390ctルース

Zircon 0.390ct loose Sale price¥3,980
【12522564掲載】スイスブルートパーズ 17.360ctルース

Swiss blue topaz 17.360ct loose Sale price¥29,800
【12522561掲載】スイスブルートパーズ 11.500ctルース

《Yurakucho Marui 2024112 takeout》 Swiss blue topaz 11.500ct loose Sale price¥19,800
【12522560掲載】スイスブルートパーズ 10.910ctルース

Swiss blue topaz 10.910ct loose Sale price¥19,800
Sold out 【12522535掲載】アラゴナイト 2.940ctルース

Aragonite 2.940ct loose
【山本武氏】ロッククリスタル 12.727ctルース - カラッツSTORE

[Mr. Takeshi Yamamoto] Rock crystal 12.727ct loose Sale price¥49,800
Additional charges page

Additional charges page Sale price¥15,000
Let's try jewelry polishing "Do-it-yourself rough stone polishing set" (for beginners: fluorite 2 stone set)

Let's try jewelry polishing "Do-it-yourself rough stone polishing set" (for beginners: fluorite 2 stone set) Sale price¥2,980
Purple Chalcedony 1 stone《Discount available for multiple purchases》

Purple Chalcedony 1 stone《Discount available for multiple purchases》 Sale price¥3,980
Euperlite 1 stone approx. 15ct-20ct (Michigan, USA) {Multiple purchase discount}

Euperlite 1 stone approx. 15ct-20ct (Michigan, USA) {Multiple purchase discount} Sale price¥2,580
Euperlite 1 stone approx. 10ct (Michigan, USA) {Multiple purchase discount}

Euperlite 1 stone approx. 10ct (Michigan, USA) {Multiple purchase discount} Sale price¥1,580
【12522186掲載】スピネル 0.640ctルース

Purple spinel 0.640ct loose (cobalt band recognized) Sale price¥24,800
【甲州貴石切子】デュモルチェライトインクォーツ 3.160ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Dumortierite in Quartz 3.160ct loose with emblem Sale price¥55,800
【KEN氏】ミャンマー産ピンクスピネル 0.570ctルース

[KEN] Pink spinel from Myanmar 0.570ct loose Sale price¥6,980
宝石研磨に挑戦してみよう「自分で出来る原石磨きセット」（中級者向け：アンデシン）

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for intermediate users: iolite rough stone) Sale price¥2,980
【12521915掲載】プレーナイト 6.000ctルース

Playnight 6.00ct loose Sale price¥9,800
【12521913掲載】プレーナイト 4.210ctルース

Playnight 4.210ct loose Sale price¥8,800
【12521911掲載】プレーナイト 4.150ctルース

Prehnite 4.150ct loose Sale price¥7,980
[Jeweler's Tools] 2-piece loose tweezers set with stopper (for small jewelry)

[Jeweler's Tools] 2-piece loose tweezers set with stopper (for small jewelry) Sale price¥3,980
【12521824掲載】ファイアオパール 0.830ctルース

Fire opal 0.830ct loose Sale price¥9,800
【KEN氏】オレゴンサンストーン 0.55ctルース - カラッツSTORE

[KEN] Oregon Sunstone 0.55ct loose Sale price¥6,980
Rose quartz 1 stone (heart, approx. 23ct)《Discount available for multiple purchases》

Rose quartz 1 stone (heart, approx. 23ct)《Discount available for multiple purchases》 Sale price¥3,980
Synthetic alexandrite 1 stone (round, mele size)《Discount available for multiple purchases》

Synthetic alexandrite 1 stone (round, mele size)《Discount available for multiple purchases》 Sale priceFrom ¥3,980
【12521749掲載】レインボースキャポライト 0.93ctルース

Rainbow Scapolite 0.93ct loose 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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

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.

KARATZ・Five Commitments