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Transparent marine blue aquamarine/
Coral, a gift from the sea with its unique and beautiful luster


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Gemstone Name | Aquamarine | Coral |
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Mineral Name | Beryl | - |
Japanese name | Indigo stone, indigo ball, beryl | Coral |
Origin of the name | The name comes from the combination of "water = aqua" and "sea = marine" because of the clear blue color like the ocean. | Coral comes from the Greek word "koralion" meaning "little jewel" (English) |
color | Blue to light blue | Red, orange, pink, white |
Mohs hardness | 7.5 to 8 | 3.5 |
Origin | Madagascar, Brazil, etc. | Japan, Italy, and other Mediterranean countries |
Stone meaning | Intelligent, calm, and brave | Wisdom, longevity, happiness |
effect | Peace of mind, stress reduction, and a happy marriage | Red: Easy delivery, good health Pink: Improved love luck and relationships White: Peace of mind |
Care | Add mild detergent to lukewarm water and gently clean with a soft brush / Ultrasonic cleaning | After washing with baking soda or water, dry in the shade/store separately away from direct sunlight |
others | The highest quality is Santa Maria aquamarine, which has a deep light blue color. | The deep, beautiful coral found in Japan is called "blood-red coral." It is also popular as a gift for the 35th wedding anniversary. |
Have you ever heard of aquamarine? It has a clear pale blue color and is highly transparent.A popular colored gemstoneIt is the birthstone for March and also the zodiac stone for Gemini and Capricorn.
Another March birthstone is coral, a beautiful gift from the sea. While most corals live in shallow waters,Coral used in jewelry lives in the deep seaIt is rare and highly valued because it takes a long time to grow. In addition to being the birthstone for March, it is also designated as the zodiac stone for Taurus, and for the 35th jade/coral wedding anniversary.
Both of the birthstones for March are gemstones associated with the sea. We have compiled details for you to refer to.
▼Click here to learn more about other birthstones
1.Aquamarine
Aquamarine characteristics

It is produced in large quantities in Brazil and Africa, and among aquamarines, the deepest and most intense blue ones are called "Santa Maria Color Aquamarine" and is traded at high prices.
Recently, Japanese appraisal agencies have also begun to list Santa Maria color in appraisal certificates.
The origin of aquamarine
The beautiful deep blue color of Santa Maria is so named because it was mined in the Santa Maria de Itabira mine in Brazil. Nowadays, it is rarely mined in Brazil, and most of it comes from Africa. For this reason, it is also called Santa Maria Africana.
The effects of aquamarine
Aquamarine has been treasured by sailors.A stone that shows the way" has been highly valued as a
Its clear blue color calms the mind and relieves stress. It also maintains a balance between the mind and body and smooths human relationships, so it is said to be a stone that leads to a happy married life.
It is recommended for those who want to find mental stability and those who work in the water industry.
Caring for Your Aquamarine
Furthermore, as these jewelry pieces are usually heated, prolonged exposure to direct sunlight may cause them to fade due to the effects of ultraviolet rays. After use, wipe them with a soft cloth and store them in a jewelry box.
If you notice that the shine is starting to dull, it's time to take care of it.
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 aquamarine. If you scrub too hard, the prongs holding the aquamarine in place may come loose, so it's important to scrub gently. Once you've finished scrubbing, rinse the aquamarine with lukewarm water.
We also recommend using an ultrasonic cleaner to remove fine dirt. However, some gemstones, such as emeralds and pearls, are not suitable for ultrasonic cleaning. If there is an emerald next to the aquamarine, you should never use ultrasonic cleaning.
Hojudo also has a wide selection of aquamarine jewelry. Be sure to check out their website.
▼Aquamarine jewelry is here
2.Coral
Characteristics of coral

It is mainly produced in Kochi Prefecture and the Mediterranean Sea. However, the famous bright red "blood red coral" is a name that is only used for Japanese coral, and the Mediterranean coral cannot be called that. However, even famous appraisal institutions such as the Central Gemological Institute have started to refer to it as "blood red coral," which shows its popularity.
Not only red coral, but also soft pink peach coral is popular, and there is also white coral available.
The origin of coral
Did you know that "coral" is an animal called a coraloid? It is a member of the same family as sea anemones. Precious coral lives in the deep sea and it is said that it takes 100 years for it to grow to 1cm.
The effects of coral
Coral is said to protect its owner from misfortune.The effect varies depending on the color.
Red coral: It improves blood circulation and has long been treasured as a talisman for safe childbirth and good health.
Pink Coral: A soft color that improves relationships, including love luck.
White coral: Found only in limited areas of the ocean, it brings peace of mind and is expected to activate energy.
Caring for Coral
It is vulnerable to acids such as sweat and may discolor, so please wipe it with a soft cloth after use.
It is also sensitive to heat and ultraviolet rays, so it should be stored away from heaters and out of direct sunlight.
Also, since it is soft, please store it separately so that it does not come into contact with other jewelry.
Ultrasonic cleaning is also not recommended. Even ultrasonic cleaning can damage coral, so if you do need to clean it, you should use baking soda and water, and dry it in the shade, away from direct sunlight.
It is a delicate gemstone, so if you are concerned about fading or dullness, consult a specialist. There is a way to restore its original luster by slightly scraping the surface.
Hojudo also has a wide selection of coral jewelry. Be sure to check out their website.
▼Coral jewelry is here