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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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Blue zircon 0.194ct loose Sale price¥4,980

Blue zircon 0.232ct loose Sale price¥5,980

Tanzanite 1.024ct loose Sale price¥15,800

[KEN] Zircon 1.519ct loose Sale price¥12,800

[KEN] Zircon 0.991ct loose Sale price¥8,800

[KEN] Zircon 0.371ct loose Sale price¥3,980

[KEN] Zircon 1.320ct loose Sale price¥12,800

[KEN] Zircon 1.249ct loose Sale price¥14,800

Tanzanite 2.358ct loose Sale price¥69,800

Zircon 1.430ct loose Sale price¥6,980

Tanzanite 1.680ct loose Sale price¥29,800

Orange zircon 3.543ct loose Sale price¥39,800

Orange zircon 2.081ct loose Sale price¥19,800

Orange zircon 1.50ct loose Sale price¥17,800

Tanzanite 41.690ct loose Sale price¥2,480,000

[KEN] Zircon 0.592ct loose Sale price¥4,980

[KEN] Zircon 0.426ct loose Sale price¥5,980

[KEN] Zircon 0.371ct loose Sale price¥4,980

Green zircon 1.200ct loose Sale price¥8,800

Green zircon 1.140ct loose Sale price¥6,980

Green zircon 1.100ct loose Sale price¥6,980

Green zircon 1.090ct loose Sale price¥6,980

Green zircon 0.980ct loose Sale price¥5,980

Green zircon 0.970ct loose Sale price¥5,980

Green zircon 0.890ct loose Sale price¥6,980

Zircon 1.543ct loose Sale price¥6,980

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.