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12月誕生石

december birthstone

December's birthstones are turquoise , lapis lazuli , tanzanite , and zircon .

Turquoise is a gemstone with a unique blue-green color that is famous for being used in Indian jewelry. Some have a distinctive black tracery pattern called a spider web. High-quality products without mesh patterns are called "Sleeping Beauty."

Lapis lazuli , also known as lapis lazuli in Japanese, is a gemstone that was once widely used as a paint. It is also famous for being used in Vermeer's masterpiece, ``Girl with a Pearl Earring.'' Gemstones are made from a collection of multiple minerals, and those that contain golden pyrite are often likened to the night sky, and I think they are gemstones with a unique beauty.

Tanzanite is the gemstone name given to the blue to violet zoisite. It is also famous for its strong pleochroism, which shows different colors when viewed from different angles, making it an attractive gemstone that makes you want to collect many different colors and pleochroisms. Large crystals can often be found here, so it is also recommended for those who like large gemstones.

Zircon is thought to be the first mineral formed on Earth, and is a gemstone that has been with humans since ancient times. When exposed to light, it emits strong dispersed light (fire). One of its characteristics is that it exhibits a phenomenon called doubling, in which letters and facet edges placed underneath appear double.

Karatz GemMagazine
" List of December birthstones/birthstones "

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Sold out K18PG ブラジル産カラーシフトアメジスト・ハックマナイト・ピンクサファイアリング
Sold out 【さくらインカット】タンザナイト 6.0mm/0.701ctルース
Sold out タンザニア産タンザナイト 0.331ctルース
Sold out カラーチェンジジルコン 0.626ctルース
Sold out タンザニア産タンザナイト 0.495ctルース
Sold out タンザナイト 0.469ctルース
Sold out タンザナイト 0.269ctルース
Sold out タンザニア産タンザナイト 0.481ctルース
Sold out K18YGアフガニスタン産クンツァイト 0.74ct・タンザナイト・サファイアリング
Sold out Water Play 13 Stone Set (Santa Maria Aquamarine, Sea Blue Chalcedony, Blue Zircon, Diamond, etc.) Half Eternity Ring Set (2.0mm)
Sold out Night purple 13 stone set (hackmanite, tanzanite, black spinel, diamond, etc.) Half eternity ring set (2.0mm)
Sold out タンザニア産バイカラータンザナイト 4.804ct原石
Sold out カンボジア産バイカラージルコン 1.668ctルース
Sold out グリーンジルコン 0.456ctルース
Sold out タンザナイト 0.429ルース
Sold out タンザニア産タンザナイト 0.298ctルース
Sold out タンザナイト 0.804ctルース
Sold out タンザナイト 0.856ctルース
Sold out K18PGベニトアイト0.19 リング
Sold out タンザニア産タンザナイト 1.140ctルース
Sold out タンザニア産タンザナイト 0.945ctルース
Sold out タンザナイト 1.577ctルース
Sold out タンザナイト 1.243ctルース
Sold out タンザニア産タンザナイト 0.567ctルース
Sold out タンザナイト 2.011ctルース
Sold out タンザナイト 6.006ctルース
Sold out K18/Pt950 カンボジア産ブルージルコン0.48ct・パライバトルマリンリング
Sold out [12554726] Cambodian bicolor zircon 5.480ct loose stone
Sold out タンザニア産タンザナイト 0.492ctルース
Sold out タンザニア産タンザナイト 1.250ctルース
Sold out 【さくらシェイプ】カンボジア産ブルージルコン 8mm/2.909ct《コラボ》ルース ワッペン
Sold out タンザニア産タンザナイト 6mm/0.889ct《コラボ》ルース ワッペン
Sold out タンザニア産バイカラータンザナイト 2.454ct原石
Sold out タンザニア産タンザナイト 0.272ctルース
Sold out 【スタッフセレクション】タンザニア産タンザナイト 0.262ctルース(セミオーダーメイドセッ
Sold out Tanzanite 1.116ct loose stone
Sold out タンザナイト 0.754ctルース
Sold out バイカラータンザナイト 3.856ct原石
Sold out Tanzanite 4.8mm/0.494ct loose stone
Sold out Tanzanite 0.781ct loose stone
Sold out マラウイ産バイカラージルコン 1.646ctルース
Sold out カンボジア産ブルージルコン 0.675ctルース
Sold out Cambodian blue zircon (Ratanakiri blue) 3.449ct loose
Sold out 【12546376更新】タンザナイト 1.593ctルース
Sold out ジルコン 0.194ctルース
Sold out 【サンジェ氏】ブルージルコン 0.115ctルース
Sold out タンザナイト 0.449ctルース
Sold out タンザナイト 0.579ctルース

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.