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 "

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

Rough diamond (sawable) from Russia, 0.148ct rough diamond (trigon) Sale price¥49,800

Diamond (cabochon cut) 0.206ct loose Sale price¥45,800

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

[Colorfri] K18 Akoya Pearl and 0.08ct Diamond Ring with Certificate Sale price¥49,800

【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

Pt900 ダイヤモンド 0.65ctct ペンダントトップ（ネックレストップ）

[Colorful] Pt900 Diamond 0.65ct Pendant Top Sale price¥89,800

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)

Internally Flawless Diamond (H&C) 4.5mm/0.360ct Loose (D, IF, 3Excellent H&C) GIA & CBT 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)

Internally Flawless Diamond 4.3mm/0.300ct Loose (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)

Flawless Diamond (H&C) 4.0mm/0.230ct Loose Stone (D, FL, 3Excellent H&C) GIA & Central Gem Sale price¥158,000

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

Flawless Diamond (H&C) 3.8mm/0.210ct Loose (D, FL, 3Excellent H&C) GIA & Central Gem Lab Sale price¥148,000

[Colorfyl] K18WG Diamond 0.126ct Pendant (Necklace) Sale price¥49,800

[Calafull] K18 Diamond 0.3ct Pendant Top (Necklace Top) Sale price¥39,800

【Calafuri】K18WG Diamond 0.21ct Pendant Top (Necklace) Sale price¥49,800

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)

Loose Brown Diamond 0.290ct (FANCY BROWN, SI-2) Sale price¥15,800

Diamond 3.7mm/0.318ct Loose (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)

Loose diamond 3.5mm/0.167ct (G, VS-1, VeryGood) Sale price¥29,800

Diamond 3.8mm/0.197ct Loose (E, VVS-1, VeryGood) Sale price¥39,800

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

Diamond 3.5mm/0.167ct Loose (D, VVS-2, VeryGood) Sale price¥37,800

Diamond 3.8mm/0.211ct Loose Stone (E, VS-2, Excellent) Sale price¥49,800

Diamond 3.8mm/0.216ct Loose (G, VS-1, Excellent) Sale price¥49,800

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

Diamond 3.8mm/0.207ct Loose (F, VS-1, Excellent) Sale price¥35,800

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.