Gemstone/Birthday Guide


Colored gemstones can be found in almost every size, shape, and color. This makes them a favorite media for both jewelry designers and customers because there is a gemstone to fit almost every taste, style, and personality.

Louisiana Coin & Jewelry carries a full spectrum of colored gemstones, including birthstones. There are many variations to birthstones http://www.agta.org/gemstones/; but in general, the colors of these stones will be similar for each month. Visit us and see our collection of colored-gemstone jewelry in person. Or speak with one of our experts to see what we can custom design for you

January: Garnet

The garnet group of related mineral species offers gems of every hue, including fiery red pyrope, vibrant orange spessartine, and rare intense- green varieties of grossular and andradite.

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February: Amethyst

Purple variety of the mineral quartz, often forms large, six-sided crystals. Fine velvety-colored gems come from African and South American mines. In demand for jewelry at all price points

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March: Aquamarine

Blue to slightly greenish-blue variety of the mineral beryl. Crystals are sometimes big enough to cut fashioned gems of more than 100 carats.

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April: Diamond

This hardest gem of all is made of just one element: carbon. It’s valued for its colorless nature and purity. Most diamonds are primeval—over a billion years old—and form deep within the earth.

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May: Emerald

The most valued variety of beryl, emerald was once cherished by Spanish conquistadors, Inca kings, Moguls, and pharaohs. Today, fine gems come from Africa, South America, and Central Asia.

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June: Pearl and Alexandrite

Pearl: Produced in the bodies of marine and freshwater mollusks naturally or cultured by people with great care. Lustrous, smooth, subtly-colored pearls are jewelry staples, especially as strands.

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Alexandrite: The color-change variety of the mineral chrysoberyl. Bluish green in daylight, purplish red under incandescen light; hard and durable. Top quality examples are rare and valuable.

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July: Ruby

Traces of chromium give this red variety of the mineral corundum its rich color. Long valued by humans of many cultures. In ancient Sanskrit, ruby was called ratnaraj, or “king of precious stones.”

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August: Peridot

Yellow-green gem variety of the mineral olivine. Found as nodules in volcanic rock, occasionally as crystals lin veins in mountains of Myanmar and Pakistan, and occasionally inside meteorites.

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September: Sapphire

Depending on their trace element content, sapphire varieties of the mineral corundum might be blue, yellow green, orange, pink, purple, or even show a six-rayed star if cut as a cabochon.

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October: Opal and Tourmaline

Opal: Shifting play of kaleidoscopic colors unlike any other gem. Opal’s microscopic arrays of stacked silica spheres diffract light into a blaze of flashing colors. Color range and pattern help determine value.

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Tourmaline: Comes in many colors, including the remarkable intense violet-to-blue gems particular to Paraíba, Brazil, and similar blues from Africa. One of the widest color ranges of any gem

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November: Citrine

A yellow-to-golden member of the quartz mineral group. Deep golden varieties from Madeira, Portugal, can resemble costly imperial topaz. Thought by ancient cultures to increase psychic powers.

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December: Blue Topaz, Zircon, and Turquoise

Blue Topaz: Named for the (now called Zabargad) old Greek island Topazios, topaz was never actually found on that island — peridot was. modern mineralogy was around periodot and topaz were often confused. The range of colors topaz comes in is surprising for many people. Color saturations also vary from light to dark. Colorless topaz also exists. Many think of topaz as brown, which is one, but Topaz also comes in blue, green, yellow, orange, red, pink and purple.

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Zircon: Optical properties make it bright and lustrous. Best known for its brilliant blue hues; also comes in warm autumnal yellows an reddish browns, as well as red and green hues.

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Turquoise: Ancient peoples from Egypt to Mesoamerica and China treasured this vivid blue gem. It’s a rare phosphate of copper that only in the earth’s most dry and barren regions.

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