5 major gems

H&C(ハート&キューピッド)ダイヤモンド1.2mmルース - カラッツSTORE

H&C (Hearts & Cupids) Diamond 1.2mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥3,980

ピンクオパール・ブルーオパール2石セット（小・大サイズ） - KARATZ STORE｜カラッツSTORE

Pink opal/blue opal 2 stone set (small/large size)《Discount available for multiple purchases》 Sale priceFrom ¥1,980

Ethiopian opal 1 stone (oval cut, 3 x 4 mm) loose (discount available for multiple purchases) Sale price¥1,980

Diamond 1.2mm (VS class, DG color, round cut, melee diamond) 1 loose stone {Multiple purchase discounts available} Sale price¥1,980

1 American Herkimer Diamond (rock crystal) 💎 (child-bearing type)《Multiple purchase discount available》 Sale price¥2,980

1 Ruby from Greenland (round cut, 1.2mm)《Discount available for multiple purchases》 Sale price¥2,280

Gem Gacha💎 Sri Lankan Sapphire《Ratnapura》1 loose stone (average 0.75ct)《Multiple purchase discount available》 Sale price¥5,980

Green Diamond (Treatment) 1 stone (approx. 1.3mm)《Multiple purchase discount available》 Sale price¥3,580

Lab-grown ice blue diamond set of two (synthetic diamond, VS class equivalent, 1mm) {Multiple purchase discount available} Sale price¥1,580

1 blue fluorescent diamond (VS-SI class equivalent, 2.0mm)《Multiple purchase discount available》 Sale price¥5,980

【5/21 22時販売】【KEN氏】メキシコ産オパール1石（約3.5mm）《複数購入割引有》 - カラッツSTORE

[Mr. KEN] 1 Mexican opal (approx. 3.5mm)《Multiple purchase discount available》 Sale price¥3,980

1 green opal from Amazon《Discount available for multiple purchases》 Sale price¥2,980

Gem Gacha "April Birthstone" 💎 Fluorescent Yellow Diamond (Tapered Cut or Baguette Cut) 1 Stone {Multiple Purchase Discounts Available} Sale price¥3,980

1 loose sapphire from Ratnapura, Sri Lanka (3.0mm-4.0mm, trilliant cut)《Multiple purchase discount available》 Sale price¥5,980

Colombian emerald loose rough stone set of 2 stones (round cut 3mm)《Multiple purchase discount available》 Sale price¥6,980

1 heart-shaped ruby 2.5mm《Discount available for multiple purchases》 Sale price¥5,980

Limited to 13 stones: 1 black star sapphire loose stone (including 2 8-line star sapphires) Multiple purchase discounts available Sale price¥4,980

Gem Gacha💎Brown Star Sapphire 1 Loose Stone《Multiple Purchase Discounts Available》 Sale price¥6,980

1 Ruby from Greenland (heart shape, 4mm)《Discount available for multiple purchases》 Sale price¥5,980

Princess cut diamond 2.0mm loose (equivalent to VS class)《Multiple purchase discount available》 Sale price¥8,800

Diamond (Old Mine Cut) 1 Loose Stone {Multiple Purchase Discounts Available} Sale price¥4,980

ダイヤモンドルース・鑑定書移行代金 - KARATZ STORE｜カラッツSTORE

Diamond loose/certificate transfer fee Sale price¥5,000

Baroque Opal 2 stones《Discount available for multiple purchases》 Sale price¥3,980

Limited time sale: Lozenge cut Madagascar sapphire, 1 piece loose. Multiple purchase discounts available. Sale price¥1,980

1 stone of green opal from South Africa (discount available for multiple purchases) Sale priceFrom ¥2,980

H&C (Hearts & Cupids) Diamond 1.5mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥4,980

Diamond loose sorting transition fee Sale price¥3,000

Limited to 16 stones Gem gacha💎 Cut by Sanjay, a Sri Lankan polisher (1 in 2 people will win a Sanjay sapphire) Multiple purchase discounts available Sale price¥4,980

サファイア原石 1石（イエロー系） - KARATZ STORE｜カラッツSTORE

1 rough sapphire stone (yellow)《Discount available for multiple purchases》 Sale price¥2,280

Limited to 10 stones Mexican Cantera Opal 1 loose stone (10 x 8 cm) Multiple purchase discounts available Sale price¥5,980

Limited to 23 pieces: Sri Lankan white sapphire, 1 loose stone (pear shape, 5 x 3 mm) Multiple purchase discounts available Sale price¥3,980

ネパール産オーシャンブルーカイヤナイト＋ブルーカイヤナイト2石セット《複数購入割引有》

Limited to 20 sets: Nepalese Ocean Blue Kyanite + Blue Kyanite 2-stone set (Multiple purchase discounts available) Sale price¥3,980

《Limited to 8 items》 1 stone loose sapphire from Sri Lanka (heart shape, 5.5mm) 《Discount available for multiple purchases》 Sale price¥6,980

コロンビア産エメラルドキャッツアイ1石ルース（平均0.35ct)《初めての方向け》

Colombian emerald cat's eye 1 stone loose (average 0.35ct)《For first-time users》《Multiple purchase discount available》 Sale price¥12,800

Fire Opal (Common Opal) 2 stone set《Discount available for multiple purchases》 Sale price¥3,980

Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available) Sale price¥8,800

Limited to 21 stones [Kitty Gacha] Cat cut, blue opal, jade, chalcedony, etc. (One in four people will also receive a paw set) [Multiple purchase discounts available] Sale price¥7,980

Limited to 6 stones: 1 loose black diamond (rose cut, 5mm) Multiple purchase discounts available Sale price¥6,980

Gemstone Encyclopedia Playing Cards + Gemstone Ballpoint Pen Set (Unheated Ruby, Unheated Sapphire, etc.) Sale price¥7,000

[On sale from 10/4 at 10pm] {Top Quality} Benitoite 7 stones and Diamond 6 stones (H&C) Half Eternity Ring Set (2.0mm) Sale price¥158,000

Limited to 6 stones: 1 loose, unheated silky pink sapphire from Vietnam (milky pink sapphire) Multiple purchase discounts available Sale price¥5,980

Limited to 8 stones: 1 Mexican opal loose stone (fire opal, water opal) Discounts for multiple purchases For beginners Sale price¥5,980

Limited time sale: Sri Lankan white sapphire, 1 loose stone (oval cut, 5 x 3 mm) Multiple purchase discounts available Sale price¥1,980

《Limited to 7 stones》 1 loose sapphire stone (lozenge cut, approx. 6 x 4 mm) 《Discount available for multiple purchases》 Sale price¥5,980

1 loose Australian opal (heart shape, 4 x 4mm)《Discount available for multiple purchases》 Sale price¥3,980

Rose-cut beryllium-treated sapphire, 1 loose stone (4mm, September birthstone) {Multiple purchase discounts available} Sale price¥1,580

{For beginners} Three major precious stone set💎 Ruby, sapphire, emerald 3 stone set {Multiple purchase discounts available} Sale price¥6,980

Colombian mint color emerald 0.198ct loose stone Sale price¥6,980

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