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 "

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

[COLORFUL] Pt900/Pt850 Diamond 4.0mm/0.29ct Solitaire Pendant (Necklace) Sale price¥35,800

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

[COLORFUL] Pt850/K14WG Apple Green Diamond 0.38ct Diamond 0.50ct Earrings with Certificate of Appraisal Sale price¥98,000

[Posted on 32501949] Diamond 0.310ct Loose Stone (E, VS1, 3Excellent) GIA Sale price¥88,800

Pt900 ブラックダイヤモンド 1.00ct・ダイヤモンド0.50ctリング鑑別書

[Lottery Sale 12][For Winners Only][Posted on 22602618] Pt900 Black Diamond 1.00ct / Diamond 0.50ct Ring Sale price¥158,000

ダイヤモンド 4.3mm/0.310ctルース(D, VS1, Excellent) GIA

[Lottery Sale 0707_02] Diamond 0.310ct Loose (D, VS1, Excellent) GIA Sale price¥89,800

ダイヤモンド 4.0mm/0.250ctルース(D, VVS1, 3Excellent) GIA

[Lottery Sale 0707_01] Diamond 0.250ct Loose Stone (D, VVS1, 3Excellent) GIA Sale price¥79,800

【KARAFURU】K18 Diamond 0.15ct Pendant Top (Necklace Top) Sale price¥29,800

カメレオンダイヤモンド 4.0mm/0.255ctルース(LIGHT GRAYISH GREEN YELLOW, VS2)

[For xxx only] Chameleon Diamond 0.255ct Loose (LIGHT GRAYISH GREEN YELLOW, VS2) (Listed under 32501581) Sale price¥59,800

ピンクダイヤモンド 0.075ctルース(FANCY PURPLE PINK, SI1)

Pink Diamond 0.075ct Loose (FANCY PURPLE PINK, SI-1) Sale price¥79,800

ブラウンダイヤモンド 0.728ctルース(FANCY DARK BROWN, SI2)

Brown Diamond 0.728ct Loose (FANCY DARK BROWN, SI-2) Sale price¥49,800

Brown Diamond 0.778ct Loose Stone (FANCY BROWN, SI-1) Sale price¥59,800

ブラウンダイヤモンド 5.0mm/0.556ctルース(FANCY LIGHT BROWN, VS-1)

Loose Brown Diamond 5.0mm/0.556ct (FANCY LIGHT BROWN, VS-1) Sale price¥39,800

ダイヤモンド 3.7mm/0.185ctルース(D, VVS-2, 3Excellent H&C)

Diamond 3.7mm/0.185ct Loose (D, VVS-2, 3Excellent H&C) Sale price¥39,800

[Listed as 12563264] Rough Russian Diamond (Sawable) 0.124ct Sale price¥39,800

Sierra Leonean Rough Diamond (Sawable) 0.072 ct. [12563273 Listed] Sale price¥22,800

Diamond 3.0mm/0.100ct Loose (E, VVS-2, VeryGood) Sale price¥22,800

Diamond 3.8mm/ 0.198ct Loose (D, VVS-2, VeryGood) Sale price¥29,800

グリーンダイヤモンド 0.100ctルース(VERY LIGHT GREEN, SI-1)

Green Diamond 0.100ct Loose (VERY LIGHT GREEN, SI-1, Old Cut) Sale price¥39,800

0.229ct Diamond Loose Stone (D, VS-2, Flanders Cut) Sale price¥39,800

Pt900 ダイヤモンド原石 2.733ct・ダイヤモンド0.68ctリング鑑別書

[Calafuri] Pt900 Rough Diamond 2.733ct, Diamond 0.68ct Ring with Certificate Sale price¥198,000

インターナリーフローレスダイヤモンド 0.272ctルース(D, IF, 3Excellent H&C)

[Lottery Sale 0530_03] Internally Flawless Diamond 4.2mm/0.272ct Loose (D, IF, 3Excellent H&C) GIA Sale price¥138,000

Russian rough diamond (sawable) 0.088ct loose Sale price¥19,800

Russian Diamond Rough (Sawable) 0.103ct Loose (Trigon) Sale price¥25,800

Rough diamond from Sierra Leone (sawable) 0.089ct rough (trigon) Sale price¥27,800

Chameleon Diamond Green Diamond 0.122ct Loose (FANCY GRAY GREEN, SI2) Sale price¥69,800

Zimbabwean rough green diamond (sawable) 0.228ct rough (trigon) Sale price¥79,800

Rough diamond from Botswana (sawable) 0.118ct rough (trigon) Sale price¥29,800

Botswana rough diamond (sawable) 0.090ct rough (trigon) Sale price¥22,800

Rough diamond from Botswana (sawable) 0.087ct (trigon) Sale price¥21,800

【Carafuru】K18WG Diamond 1.03ct Pendant Top Sale price¥128,000

South African diamond rough (sawable) 0.110ct rough Sale price¥22,800

South African diamond rough (sawable) 0.085ct rough Sale price¥15,800

【COLORFLE】Pt900/K18 Diamond 0.22ct Ring with Certificate Sale price¥98,000

ピンクダイヤモンド 0.030ctルース(FANCY PURPLISH PINK, SI-1)

Pink Diamond 1.95mm/0.030ct Loose Stone (FANCY PURPLISH PINK, SI-1) Central Gem Lab Sale price¥59,800

パープルダイヤモンド 0.048ctルース(FANCY VIVID PINK PURPLE, SI-1)

0.048ct Loose Purple Diamond (FANCY VIVID PINK PURPLE, SI-1) CGL Sale price¥198,000

インターナリーフローレスダイヤモンド 0.320ctルース(G, IF, 3Excellent)

Internally Flawless Diamond 4.4mm/0.320ct Loose (G, IF, 3Excellent) GIA Sale price¥89,800

Diamond 3.7mm/0.197ct Loose (H, VS-1, Good) Sale price¥29,800

Diamond 3.7mm/0.194ct Loose (H, VS-2, Excellent) Sale price¥35,800

Diamond 3.7mm/0.190ct Loose (E, VVS-2, VeryGood) Sale price¥34,800

Diamond 3.5mm/0.145ct Loose (F, VS-1, VeryGood) Sale price¥26,800

Loose diamond 3.1mm/0.117ct (D, VVS-2, VeryGood) Sale price¥23,800

Diamond 3.7mm/0.192ct Loose (F, VVS-2, VeryGood) Sale price¥39,800

Diamond 3.7mm/0.184ct Loose (D, VS-1, VeryGood) Sale price¥33,800

Diamond 3.3mm/0.172ct Loose (G, VS-1, Flanders Cut) Sale price¥45,800

[COLORFUL] Pt900 Diamond 1.00ct Pendant (Necklace) Sale price¥49,800

Salt and pepper diamond 0.446ct loose Sale price¥39,800

[Karafuri] K18WG Diamond 0.40ct Pendant (Necklace) Sale price¥79,800

Pt900 アイスブルーダイヤモンド（トリートメント） 0.256ctct ペンダント（ネックレス）

【Colorful】Pt900 Treated Ice Blue Diamond 0.256ct / Diamond 0.06ct Pendant (Necklace) Sale price¥98,000

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.