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sapphire

Sapphire is the birthstone of September. Isn't this a gemstone that can be said to be the representative blue gemstone? However, there are actually many colors, including ``bicolor sapphire'' that exhibits two colors in one stone, ``color change sapphire'' that has a color change effect, and ``star sapphire'' that shows six lines when exposed to light. There are many types such as ``. It belongs to the same mineral corundum as ruby, and has high Mohs hardness and toughness, making it a gemstone that can be enjoyed as everyday jewelry.

Karatz GemMagazine
" sapphire "

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Sold out K14WG ブルーサファイア 0.22ctct ペンダント（ネックレス）

[ColorFleuri] K14WG Blue Sapphire 0.22ct Pendant (Necklace)
Sold out カシミール産非加熱サファイア 0.080ctルース

Kashmir unheated sapphire 2.6mm/0.09ct loose GIA

Sold out スリランカ産ピンクスターサファイア 1.682ctルース

[On sale May 15, 10 PM JST] Sri Lankan Pink Star Sapphire, 1.682ct loose stone
Sold out 合成サファイア 2.348ctルース

【On Sale May 21st, 10 PM JST】Synthetic Sapphire 2.348 ct Loose Stone
Sold out タンザニア産パープルサファイア 0.677ctルース（カラーシフトタイプ）

[On sale May 15th at 10 PM] Tanzanian purple sapphire 0.677ct loose stone (color-shift type)
Sold out 【22602565掲載】K18 ブルーサファイア リング

[On sale May 2nd at 10 PM] K18 Blue Sapphire Ring
Sold out 【12562747掲載】マダガスカル産非加熱ティールグリーンサファイア 1.740ctルース

Madagascar Unheated Teal Green Sapphire 1.74ct Loose GIA

Sold out 0.430ct Unheated Sapphire Loose Stone from Kashmir

0.430ct Unheated Sapphire Loose Stone from Kashmir

Sold out Unheated Sri Lankan Star Sapphire 0.361ct Loose

Unheated Sri Lankan Star Sapphire 0.361ct Loose

Sold out Untreated Sri Lankan Star Sapphire 0.403 ct Loose

Untreated Sri Lankan Star Sapphire 0.403 ct Loose

Sold out スリランカ産ブルーサファイア 0.826ctルース

Sri Lankan Blue Sapphire 5.5mm/0.826ct Loose Stone
Sold out Loose 0.264ct Sri Lankan Blue Sapphire

Loose 0.264ct Sri Lankan Blue Sapphire
Sold out 0.133ct Loose Blue Sapphire from Madagascar

0.133ct Loose Blue Sapphire from Madagascar
Sold out 0.345ct Loose Blue Sapphire from Sri Lanka

0.345ct Loose Blue Sapphire from Sri Lanka

Sold out [Sakura Shape] Synthetic Sapphire 3.285ct Loose Stone

[Sakura Shape] Synthetic Sapphire 3.285ct Loose Stone
Sold out 【ゆきんこカット】合成サファイア 2.220ctルース（合成ブルーサファイア）

[Yukinko Cut] Synthetic Sapphire 2.220ct Loose (Synthetic Blue Sapphire)
Sold out スリランカ産バイカラーサファイア 0.302ctルース

[On sale May 10th at 10 PM] Sri Lankan Bi-Color Sapphire 0.302ct Loose Stone
Sold out 【12562517掲載】スリランカ産非加熱スターサファイア 0.450ctルース

Unheated Sri Lankan Star Sapphire 0.450ct Loose Stone
Sold out 【12562512掲載】スリランカ産非加熱スターサファイア 0.692ctルース

Unheated Sri Lankan Star Sapphire Loose Stone 0.692ct
Sold out スリランカ産非加熱スターサファイア 0.758ctルース

【On sale 5/6 at 10 PM JST】Unheated Sri Lankan Star Sapphire 0.758ct Loose Gemstone
Sold out 【12562507掲載】スリランカ産非加熱スターサファイア 0.961ctルース

Untreated Sri Lankan Star Sapphire 0.961ct Loose Stone
Sold out 【12562506掲載】スリランカ産非加熱スターサファイア 1.016ctルース

Sri Lankan Unheated Star Sapphire 1.016ct Loose Gemstone
Sold out 【12548841掲載】スリランカ産イエローサファイア 0.835ctルース

Sri Lankan Yellow Sapphire 0.835ct Loose
Sold out ベトナム産非加熱シルキーピンクサファイア 0.178ctルース

Vietnam unheated silky pink sapphire 0.178ct loose stone
Sold out 【12561933掲載】ティールグリーンサファイア 2.058ctルース

Teal Green Sapphire 2.058 ct Loose Stone with Appraisal

Sold out モンタナサファイア 0.235ctルース

Montana Sapphire 0.235ct loose (yellow sapphire)
Sold out モンタナサファイア 0.458ctルース

Montana Sapphire 0.458ct Loose (Bi-Color Sapphire)
Sold out モンタナサファイア 0.416ctルース

Montana Sapphire 0.416ct Loose (Bi-Color Sapphire)
Sold out Montana Sapphire 0.361ct loose (yellow sapphire)

Montana Sapphire 0.361ct loose (yellow sapphire)

Sold out モンタナサファイア 0.443ctルース

Montana Sapphire 0.443ct loose (green sapphire)
Sold out Montana sapphire 0.359ct loose (blue sapphire)

Montana sapphire 0.359ct loose (blue sapphire)
Sold out Montana Sapphire 0.449ct loose (bicolor sapphire)

Montana Sapphire 0.449ct loose (bicolor sapphire)
Sold out [12548259 published] Padparadscha sapphire 0.524ct loose

[12548259 published] Padparadscha sapphire 0.524ct loose
Sold out ベトナム産非加熱シルキーピンクサファイア 0.175ctルース

Unheated silky pink sapphire from Vietnam 0.175ct loose
Sold out Synthetic Blue Sapphire 0.886ct Loose (Synthetic Sapphire)

Synthetic Blue Sapphire 0.886ct Loose (Synthetic Sapphire)
Sold out 【12561129掲載】スリランカ産イエローサファイア 0.291ctルース

Sri Lankan Yellow Sapphire 0.291ct Loose
Sold out Pink sapphire (with hematite) 0.271ct loose stone

Pink sapphire (with hematite) 0.271ct loose stone

Sold out [Sakura InCut] Synthetic Sapphire 2.610ct Loose Stone (Synthetic Pink Sapphire)

[Sakura InCut] Synthetic Sapphire 2.610ct Loose Stone (Synthetic Pink Sapphire)

Sold out [Yukinko Cut] Synthetic Sapphire 2.102ct Loose Stone

[Yukinko Cut] Synthetic Sapphire 2.102ct Loose Stone

Sold out Silky sapphire from Vietnam, 1.169ct loose stone

Silky sapphire from Vietnam, 1.169ct loose stone

Sold out 0.745ct loose bicolor sapphire from Windsor, Tanzania

0.745ct loose bicolor sapphire from Windsor, Tanzania

Sold out Pt950 Bicolor Sapphire Pendant Top (Necklace Top)

Pt950 Bicolor Sapphire Pendant Top (Necklace Top)

Sold out Cornflower Blue Sapphire 0.370ct Loose AIGS

Cornflower Blue Sapphire 0.370ct Loose AIGS
Sold out パパラチアサファイア 0.191ctルース

Padparadscha sapphire 0.191ct loose stone

Sold out 0.628ct Pink Star Sapphire Loose Gemstone from Sri Lanka

0.628ct Pink Star Sapphire Loose Gemstone from Sri Lanka
Sold out ベトナム産非加熱シルキーピンクサファイア 0.202ctルース

Unheated silky pink sapphire from Vietnam 0.202ct loose

Sold out Madagascar Purple Sapphire 4.2mm/0.418ct Loose

Madagascar Purple Sapphire 4.2mm/0.418ct Loose

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.