12月の誕生石(ターコイズ&タンザナイト&ジルコン)

December birthstones (turquoise, tanzanite, and zircon)


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Light blue turquoise reminiscent of a bright, clear blue sky
Tanzanite, a rare stone mined only in Tanzania
Zircon shines with a brilliance comparable to that of diamonds

ターコイズ(トルコ石)タンザナイトジルコン
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Gemstone Name Turquoise Tanzanite Zircon
Mineral Name turquoise Zoisite Zircon
Japanese name turquoise Copperite, sclerite Weathersign stone
Origin of the name Derived from the French "Turkish Stone" (Pierre Turques) Discovered in Tanzania and named by Tiffany The name comes from the Arabic word "zarkun" (red) or the Persian words "zar" (gold) and "gun" (color).
color Opaque green to blue Blue to purple Brown, yellow, orange, red, blue, etc.
Mohs hardness 5 to 6 6-7 6–7.5
Origin Iran, the United States, China, etc. Tanzania Cambodia, Australia, Sri Lanka, etc.
Stone meaning Good luck, success, prosperity noble, calm, mysterious Peace and success
effect Mental and physical health
Stress reduction
Mental stability
Harmony with the surroundings
Remove sadness
Peaceful relationships
Care Wash gently with warm water and a mild detergent using a soft brush Wash gently with warm water and a mild detergent using a soft brush Wash gently with warm water and a mild detergent using a soft brush
others Its official name is blue zoisite. It was once considered a substitute for sapphire. Symbolism of the "Stone of Peace"

December has three birthstones.
The first one is turquoise.Famous as a power stoneIt is a familiar gemstone that is often used in accessories.
The second is the mythical gemstone Tanzanite. It was once mistaken for sapphire, but it has a purple to blue hue.pleochroismTanzanite with this is very beautiful.
Lastly, zircon. It joined the ranks as the December birthstone in 2021. It comes in many colors,Brilliance comparable to that of a diamondThis is the charm of zircon.
We will introduce the birthstones for December, so please use this as a reference.

▼Click here to learn more about other birthstones

1.Turquoise

Characteristics of Turquoise

ターコイズ(トルコ石)のネックレスThe light blue color is reminiscent of a bright, clear blue sky.One of the oldest treasured gemstonesThere are also records that show that it was loved in Mesopotamia around 5000 BC.
The term turquoise blue is familiar to many, but it actually ranges in color from blue-green to sky blue, and depending on the place of origin, it can also have a black mesh-like pattern.
Its Japanese name is "Turquoise," but many people believe it is mined in Turkey. In fact, its main sources are Iran, America, and China, and it is not mined in Turkey. It was apparently given this name because it was brought to Europe by Turkish merchants long ago.
Turquoise is the birthstone for December and is also designated as the zodiac stone for Virgo.


The origin of turquoise

As mentioned above, turquoise was popularized in Europe by Turkish merchants, and its name comes from the French phrase "Pierre Turquoise," meaning "stone of Turkey."


The effects of turquoise

The stone's word isGood luck, success, and prosperity.
Amulets to protect you from disasterTurquoise has long been popular as a stone that brings mental stability and is also said to improve communication.
This gemstone is perfect for those who suffer from fatigue and stress, or who want to improve their relationships.


Caring for Turquoise

Turquoise has a Mohs hardness of 5 to 6, making it a very soft gemstone. Therefore, it is best not to store it with other jewelry. Some stones are also waxed to protect them and give them a glossy finish. Be careful as it is sensitive to high heat and solvents.
After use, wipe with a soft cloth and store. To clean, fill a cup with lukewarm water and add a small amount of mild detergent (dishwashing detergent). Then, dip a soft brush (such as a toothbrush with soft bristles) in the detergent and gently scrub the surface.If you scrub the turquoise, it may get scratched or the nails holding it in place may come loose, so it's important to wash it with a tapping motion. After washing, rinse the turquoise with lukewarm water.
Turquoise should not be cleaned in ultrasonic cleaners or steam cleaners.


Hojudo also stocks turquoise jewelry. Be sure to check out their website.
▼Turquoise jewelry here



Hojudo is a jewelry shop located in Shinsaibashi, Osaka.
We have approximately 1,500 pieces of jewelry on display, including diamonds, pearls, and colored stones, which you can touch and look at. As a jewelry specialty store with origins as a wholesaler, we offer reasonable prices, less than half the market price. We do not pressure you to buy anything, so please feel free to come and visit us.
Of course, you can also purchase it online, so don't worry.

Free consultation and estimate
Make a reservation >
First, ask by email
Contact Us >




2.Tanzanite

Tanzanite characteristics

タンザナイトの指輪Tanzanite is a new gemstone discovered in Tanzania just half a century ago. It is a type of zoisite and its official name isBlue ZoisiteHowever, only the blue to blue-purple colours mined in Tanzania are called "tanzanite".
Tanzanite is only mined in limited areas,High rarityMining volumes are expected to decrease in the future.
Another attractive feature of tanzanite is its pleochroism, which allows it to appear blue in sunlight and purple under a candle, allowing you to enjoy the changing colors.
Among them, tanzanite, which is a deeper blue than purple and has strong pleochroism, is traded at a high price.


Origin of Tanzanite

Tanzanite was named after the "Tanzanian Night" because it resembles the colors that change from dusk to night as seen over Mount Kilimanjaro in Tanzania. It is well known that the name was coined by Tiffany & Co. With the help of promotions by this popular jeweler, it quickly became a highly sought-after gemstone.


The effects of Tanzanite

The stone's word is "noble, calm, mysterious".
Suppressing emotional excitement,Helping you make calm decisionsTanzanite is also said to give you creativity and imagination.
This gemstone is perfect for people who get emotional easily or who work in creative fields.


Caring for Your Tanzanite

It is a relatively soft gemstone with a Mohs hardness of 6 to 7.5, making it vulnerable to impacts.
Therefore, when storing your jewelry, make sure to store it separately and not with other jewelry.
After use, wipe with a soft cloth and store. To clean, fill a cup with lukewarm water and add a small amount of mild detergent (dishwashing liquid). Then, dip a soft brush (a toothbrush with soft bristles) in the detergent and gently scrub the tanzanite. Scrubbing can scratch the tanzanite or cause the prongs holding it in place to come loose, so it's important to scrub gently. Once you've finished scrubbing, rinse the tanzanite with lukewarm water. We do not recommend using ultrasonic cleaners or steam cleaners.


Hojudo also has a wide selection of tanzanite jewelry. Be sure to check out their website.
▼Tanzanite jewelry is here



Hojudo is a jewelry shop located in Shinsaibashi, Osaka.
We have approximately 1,500 pieces of jewelry on display, including diamonds, pearls, and colored stones, which you can touch and look at. As a jewelry specialty store with origins as a wholesaler, we offer reasonable prices, less than half the market price. We do not pressure you to buy anything, so please feel free to come and visit us.
Of course, you can also purchase it online, so don't worry.

Free consultation and estimate
Make a reservation >
First, ask by email
Contact Us >




3.Zircon

Zircon characteristics

ジルコンの指輪"Is zircon the same as cubic zirconia, a diamond substitute?" This is a commonly misunderstood stone, but zircon is a genuine natural stone. Cubic zirconia is made primarily from a substance called zirconia, which has a similar name to zircon, so the two are often confused. However, they are completely different substances.
Zircon is considered to be the oldest mineral on Earth.The oldest is 4.4 billion years oldOr something like that.
The most attractive feature of zircon is its high refractive index, fire, and rich color. Its Japanese name is "Hiyashinsu stone," which evokes the image of a hyacinth flower with many colors. Blue and red zircons are highly valued for their high transparency and vivid color.


Origin of Zircon

The name comes from the Arabic word "zarkun" (red) or the Persian words "zar" (gold) and "gun" (color). The origin of the name suggests that it comes in many colors, including red and gold.


The effects of zircon

The stone's word is "Peace and success".
Zircon is a symbol of the "stone of peace." It gives peace to the owner,It calms the mindIt has the effect of removing sadness and creating peaceful relationships. It is a recommended gemstone for those who have strong emotional ups and downs and those who wish to grow spiritually.


Caring for Your Zircon

Zirconia is a relatively hard stone, with a Mohs hardness of 6.5 to 7. However, it is softer than diamonds and sapphires, so it is best to avoid storing it with other jewelry. After use, wipe it with a soft cloth before storing it. To clean, fill a cup with lukewarm water and add a small amount of mild detergent (dishwashing detergent). Then, dip a soft brush (a toothbrush with soft bristles) in the detergent and gently scrub the zircon. Scrubbing can scratch the zircon or loosen the prongs that hold it in place, so it's important to scrub gently. After washing, rinse the zircon with lukewarm water. We do not recommend using ultrasonic cleaners or steam cleaners.


Hojudo also has a wide selection of zircon jewelry.Be sure to check out Hojudo's website as well.
▼Click here for zircon jewelry



Hojudo is a jewelry shop located in Shinsaibashi, Osaka.
We have approximately 1,500 pieces of jewelry on display, including diamonds, pearls, and colored stones, which you can touch and look at. As a jewelry specialty store with origins as a wholesaler, we offer reasonable prices, less than half the market price. We do not pressure you to buy anything, so please feel free to come and visit us.
Of course, you can also purchase it online, so don't worry.

Free consultation and estimate
Make a reservation >
First, ask by email
Contact Us >