diamond

Diamond is the birthstone of April. This gemstone is sometimes called the king of gemstones. It is said to be the hardest gemstone on earth, and its strong shine is exceptionally beautiful. Colorless is the most common, but it comes in a variety of shades including yellow, pink, blue, orange, and green.

Karatz GemMagazine
" diamond "

[On sale May 2nd, 10 PM JST] "Only 2 Left" Pink Diamond Gacha, including FANCY LIGHT PURPLISH PINK, usually priced at 79,800 yen (multiple purchase discount available) Sale price¥6,980

Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available] Sale price¥6,980

【Sales start 4/18 10:00 PM JST】《Limited 5 pieces》Fluorescent Brown Diamond Loose Stone (Pear Shape, equivalent to SI class, 0.2ct UP)《Multiple purchase discount available》 Sale price¥4,980

カメレオンダイヤモンド 0.118ctルース(LIGHT GRAYISH GREENISH YELLOW, VS-2)

[On sale April 24th at 10 PM] Chameleon Diamond 3.1mm/0.118ct Loose (LIGHT GRAYISH GREENISH YELLOW, VS-2) Sale price¥22,800

インターナリーフローレスダイヤモンド（H&C） 0.360ctルース(D, IF, 3Excellent H&C)

【5/12 22時販売】インターナリーフローレスダイヤモンド（H&C） 4.5mm/0.360ctルース(D, IF, 3Excellent H&C)　GIA&中宝 Sale price¥188,000

インターナリーフローレスダイヤモンド 0.300ctルース(F, IF, 3Excellent)

【5/12 22時販売】インターナリーフローレスダイヤモンド 4.3mm/0.300ctルース(F, IF, 3Excellent) GIA Sale price¥98,000

フローレスダイヤモンド（H&C） 0.230ctルース(D, FL, 3Excellent H&C)

【5/12 22時販売】フローレスダイヤモンド（H&C） 4.0mm/0.230ctルース(D, FL, 3Excellent H&C) GIA&中宝 Sale price¥158,000

フローレスダイヤモンド（H&C） 4.0mm/0.266ctルース(D, FL, 3Excellent H&C) GIA＆中宝鑑 Sale price¥178,000

フローレスダイヤモンド（H&C） 0.210ctルース(D, FL, 3Excellent H&C)

【5/12 22時販売】フローレスダイヤモンド（H&C） 3.8mm/0.210ctルース(D, FL, 3Excellent H&C) GIA&中宝　 Sale price¥148,000

[On sale May 3rd at 10 PM] Pink Diamond 0.137ct Loose (FANCY DEEP BROWNISH PINK, I-1) Sale price¥29,800

【32501908掲載】ブラウンダイヤモンド 0.290ctルース(FANCY BROWN, SI-2)

[On sale April 26 at 10 PM JST] Brown Diamond 0.290ct Loose Stone (FANCY BROWN, SI-2) Sale price¥15,800

[On sale April 28 at 10 PM JST] Diamond 3.7mm/0.318ct Loose Stone (F, SI-1, Princess Cut) Sale price¥49,800

【32501899掲載】ダイヤモンド 0.167ctルース(G, VS-1, VeryGood)

[On sale May 3 at 10 PM] Diamond 3.5mm/0.167ct Loose Stone (G, VS-1, Very Good) Sale price¥29,800

【32501896掲載】ダイヤモンド 0.167ctルース(D, VVS-2, VeryGood)

[Sale on May 3rd, 10 PM JST] Diamond 3.5mm/0.167ct Loose Stone (D, VVS-2, VeryGood) Sale price¥37,800

【32501891掲載】ダイヤモンド 0.207ctルース(F, VS-1, Excellent)

[On sale May 3rd, 10 PM JST] Loose Diamond 3.8mm/0.207ct (F, VS-1, Excellent) Sale price¥35,800

【22602588掲載】【カラフリ】Pt900 ピンクダイヤモンド 0.008ct ペンダント（ネックレス）

[On sale May 3rd, 10 PM] [Colorful] Pt900 Pink Diamond 0.008ct / Diamond 0.03ct Pendant (Necklace) with Identification Card Sale price¥39,800

[Sale May 3rd, 10 PM] [Colorful] Pt900 Diamond 0.5ct Ring with Appraisal Report Sale price¥59,800

[Sale from 10 PM on 5/5] [Colorful] K18 Sphene 0.7ct and Diamond 0.03ct Ring with Certification Sale price¥79,800

[On sale May 6th, 10 PM JST] [Colorfury] Pt900 Ice Blue Diamond (Treated) 1.00ct Ring Sale price¥298,000

イエローダイヤモンド 0.071ctルース(FANCY INTENSE ORANGEY YELLOW, SI2)

Fancy intense orangey yellow diamond 0.071ct loose stone (FANCY INTENSE ORANGEY YELLOW, SI2) Sale price¥22,800

[On sale April 18th at 10 PM] [Colorfri] Pt900 Diamond 1.00ct Ring Sale price¥98,000

【32501879掲載】グレーダイヤモンド 0.096ctルース(VERY LIGHT GRAY, SI-1)

[On sale April 18th at 10 PM] Gray Diamond 2.9mm/0.096ct Loose Stone (VERY LIGHT GRAY, SI-1) Sale price¥15,800

グレーダイヤモンド 2.8mm/0.089ctルース(LIGHT GRAY, SI-2)

[Available 4/23 10 PM JST] Gray Diamond 2.8mm/0.089ct Loose Stone (LIGHT GRAY, SI-2) Sale price¥16,800

カメレオンダイヤモンド 0.079ctルース(FANCY LIGHT GRAY GREEN, SI-1)

[On sale April 24, 10 PM JST] Green Diamond, Chameleon Diamond 0.079ct Loose Stone (FANCY LIGHT GRAY GREEN, SI-1) Sale price¥25,800

カメレオンダイヤモンド 0.128ctルース(FANCY LIGHT GRAY GREEN, SI-1)

[Sale on May 9, 10 PM JST] Chameleon Diamond 3.2mm/0.128ct Loose Stone (FANCY LIGHT GRAY GREEN, SI-1) Sale price¥31,800

H&C（ハート&キューピッド）専用スコープ（ダイヤモンド専用スコープ) - カラッツSTORE

[Jeweler's Tools] H&C (Heart & Cupid) Special Scope (Diamond Special Scope) Sale price¥1,580

Ice blue diamond 1.2mm or 2.0mm 1 stone (VS class equivalent, round cut) {Multiple purchase discount available} Sale priceFrom ¥4,980

Lab-Grown Diamond (Synthetic Diamond) [HPHT Method] Single Loose Stone (2.0mm, 2.2mm, 2.4mm, 2.6mm) [Multiple Purchase Discounts Available] Sale priceFrom ¥1,580

H&C (Heart & Cupid) Diamond 2.0mm Loose (VS Class, DG Class, 2mm Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥7,980

Rose cut diamond 1.2mm x 1 stone (VS-SI class, DH color, melee diamonds) {Multiple purchase discounts available} Sale price¥2,980

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

Limited to 40 stones: Salt and Pepper Diamond (2mm, Melee Diamonds) - 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980

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

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 1.5mm Loose (VS Class, DG Class, Melee Diamonds) {Multiple Purchase Discounts Available} Sale price¥4,980

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

Limited to 14 stones: Lab-grown diamond (cabochon cut, approximately 2.3mm) - 1 loose stone. Discounts available for multiple purchases. Sale price¥4,980

Diamond loose sorting transition fee Sale price¥3,000

Limited Edition of 12 Diamonds: VS Equivalent Fluorescent Diamond Gacha with Bonus Mini Slice Diamond (Multiple Purchase Discounts Available) Sale price¥6,980

[Option] Laser engraving of characters and symbols Sale price¥5,000

【32501452掲載】ピンクダイヤモンド 0.074ctルース(FANCY LIGHT PURPLISH PINK, I-1)

[E31 Ueno] [32501452] Pink diamond 0.074ct loose stone (FANCY LIGHT PURPLISH PINK, I-1) Sale price¥39,800

13-stone diamond half eternity ring set (VS class, D-G color, H&C, 2.0mm) Sale price¥158,000

[On sale April 11 at 10 PM] Brown Diamond 6.5mm/0.989ct Loose (FANCY DARK ORANGE BROWN, SI-2) Sale price¥98,000

【On sale 10 PM, April 15】K18 Peridot and 0.03ct Diamond Ring Sale price¥45,800

[On sale April 15th at 10 PM] K18 Peridot and 0.03ct Diamond Ring Sale price¥45,800

[#202604 Kobe Out for Viewing] [On sale April 10, 10 PM] Diamond 0.185ct Loose Stone (I, SI1, Ashoka Cut) Sale price¥56,800

【22602549掲載】【カラフリ】K18WG 血赤珊瑚 0.19ct ブローチ

[Available from 10 PM on 4/11] [Colorflee] K18WG Blood Coral and Diamond 0.19ct Brooch with Certificate Sale price¥398,000

【カラフリ】Pt900/Pt850クリノヒューマイト0.726ct ペンダント（ネックレス） - カラッツSTORE

[Available for purchase at 10:00 PM on April 10th] [Karafuri] Pt900 Chondrodite 0.726ct, Diamond 0.55ct Pendant (Necklace) with Japan-Germany Gemological Report Sale price¥110,000

ピンクダイヤモンド 0.034ctルース(FANCY PURPLE PINK, I-1)

【#202604 Kobe Consignment】【Sale starts April 5th at 22:00】Pink Diamond 2.1mm/0.034ct Loose (FANCY PURPLE PINK, I-1) Sale price¥34,800

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.