Birthstones by Zodiac Sign: Your Zodiac Birthstone

Birthstones by Zodiac Sign: Your Zodiac Birthstone

Discovering your true birthstone can be thwart with confusion; many of the ancient culture charts conflict with each other and gemstones end up being duplicated in many of the months and astrological periods.  Lists of birthstones by month and birthstones by Zodiac Sign are therefore often of little help in finding your birthstone. That is why we have collated all the information for you.

Below, we have listed out birthstones by Zodiac sign. In an attempt to keep things as simple and straightforward as possible, we have only listed the modern zodiac gemstone for each astrological sign.  

If, by any chance, you do not like the astrological gemstone indicated for your sign, your alternative is to consult our Birthstone Chart to choose a gemstone from the month and not the astrological sign in which you were born.  You can also check out our list of birthstones by month.

Meanwhile, we hope you enjoy reading about your particular astrological gemstone.

Zodiac Gemstone: The Diamond

Colors: Colorless, pink,  blue, green,  champagne, brown and black

About Diamonds:
Diamonds are a crystalline form of elemental carbon and are the hardest substance found in nature – as measured on the Mohs scale.   White diamonds are the most well known and very popular for engagement rings.  Diamonds are assessed for quality in terms of their cut, clarity, carat and color.


Zodiac Gemstone:  Sapphire

Colors: blue, pink, yellow, green and colorless

About the Sapphire Gemstone
Sapphires belong to a class of minerals called Corundum, which is a form of Aluminium Oxide. Blue Sapphires occur as the result of iron and titanium being present in the Corundum, whilst colors such as yellow, green, gray, black, purple and pink are due to other trace minerals – and in the case of pink sapphire – due to trace elements like Nitrogen.


Zodiac Gemstone:  The Agate

Colors:  Agates are found in almost any color from white, grey-blue, violet, red, orange, yellow, brown and black, depending upon the minerals that are embedded in them. 

About the Agate Gemstone:
Unlike other gemstones, each Agate gemstone is unique to itself – even when cut from within the same area.  It’s distinguishing elements comprise banding or swirls of different colors or multi-colored translucency
Belonging to a variegated form of the Chalcedony family, the Agate is derived from a silicon dioxide in the form of microscopic quartz crystals.  An Agate can be defined as a banded chalcedony that has formed into different patterns and colors due to the influence of various minerals and other factors.more


Zodiac Gemstone: The Emerald

Colors: Green

About the Emerald Gemstone:
Trace amounts of chromium – and occasionally, vanadium – are responsible for the emerald’s green color.  Most natural emeralds contain inclusions (flaws) and surface breaking fissures.  Because of this, nearly all emeralds are treated by submerging them in an oil bath to enhance their apparent clarity.  more


Zodiac Gemstone: Onyx

Colors: mostly known for its black, black and white or brown and white bands of color – although it can be found in orange, honey and red. 

About the Onyx Gemstone:
Onyx is a black and white gemstone from the Chalcedony family that includes the Agates, Bloodstones and Carnelians.   The Onyx has a red and white variant called Sardonyx or Sard that is brownish red and white.

The Onyx occurs in a variety of colors but is most famous for the dramatic black color that forms such a great contrast against other stones and cameos for jewelry.  The stone has a smooth, waxy luster and is opaque.   more


Zodiac Gemstone:  Carnelian

Colors:  Red, Orange-Red and Brown

About the Carnelian Gemstone:
This rich colored gemstone is a type of chalcedony quartz that comes in bright red, orangey reds and red-browns.  The Carnelian red is obtained from the iron oxide within the stone.  The dark brown-red color is often referred to as Sard, although both share the same chemical composition and are derived from Silica with traces of iron oxide. The gemstones vary from translucent to opaque. 
The name Carnelian is believed to originate from the Latin word Cornum, for cherry, the color of Carnelian. more


Zodiac Gemstone:  Peridot

Colors:   Pale Green and Olive Green

About the Peridot Gemstone:

This gemstone is also known as Olivine, because of its olive green coloring.  The Peridot is a magnesium iron silicate that comprises two minerals: fayalit and forsterite.  Fayalite is iron rich and Fosterite Magnesium rich.

The ideal color of Peridot is a rich green, but some Peridots are yellowish green, greenish yellow or brown. Iron gives the Periodot is green coloring although the best colored gemstones have an iron percentage of less than 15% as more than that starts to create a brownish coloration.  Chromium, that adds blue to a gemstone and Nickel, as trace elements, contribute to the best peridot color. more


Zodiac Gemstone:  Beryl

Colors: Beryls are a family of gemstones which includes: the Emerald, the Aquamarine and others such as the Helidor (also known as Golden Beryl), Morganite (that is a pink Beryl), Cat’s Eye  (a Chrysoberyl) and many others.   Beryls therefore comprise just about every color.

About the Beryl Gemstones: Pure beryl is a colorless mineral and a Silicate that can become colored due to traces of other minerals.  Emeralds, Aquamarines and Morganites are all forms of Beryl – as are Golden Beryls and Red Beryls with the same name. 

About the Chrysoberyls:
Chrysoberyl, as a gemstone in its own right is relatively unknown.  This is partly because of its confusion with another gemstone family, Beryl.  These two families of gemstones are actually quite different – with Beryl being a silicate and Chrysoberyl being an oxide, although both comprise beryllium within their composition.  Members of the Chrysoberyl family include Alexandrite and Cymophane  – that is better known as “Cat’s Eye.  Both of these gemstones have become better known than the stone from which they are derived.


Zodiac Gemstone:  Blue Topaz

Colors:  sky blues, greenish blues and electric blues

About Topaz:
This gemstone is a silicate composed mainly of aluminium and fluorine.  Most Topaz stones are colorless, and of little commercial value, but the colored forms are much sought after.   Topaz colors range from yellow to orange and brown The impurity chromium produces pink to red colors and a combination of chromium and color centers (ie a defect in a gemstone’s crystal structure that effects a stone’s color) produces orange topaz.
The rarer blue topaz can also found in nature although most of them are produced by a combination of irradiation and heating treatment. more

Zodiac Gemstone:  Ruby

Colors:  The best rubies are rich, carmine red

About the Ruby Gemstone:
These wonderfully rich red gemstones are a variety of a mineral called Corundum.   The deep red color of a ruby is due to the presence of a small amount of chromium that gives it its rich red coloration.  However, when the corundum has other impurities such a iron or titanium, it becomes blue, and is called a Sapphire.    The value of a ruby will be determined upon the richness of its ruby red color.


Zodiac Gemstone:  Garnet

Colors:    Pink, purple, red, orange and brown

About the Garnet Gemstone:
The garnet comprises a group of minerals that have been used since the Bronze Age for use as adornments and for abrasives.  The gemstone was particularly popular in 18th and 19th century Europe when Bohemian garnet jewelry was very much in fashion.

The garnet group of minerals are Silicates comprising four main varieties: These are the Almandite Garnet,  the Andradite Garnet, the Hessonite Garnet and the Pyrope Garnet.  All these gemstones have different chemical formulas.  The Almandites are silicates of iron and aluminium and tend to be purplish red; the Andradites are silicates of calcium and iron and are green; the Hessonite Garnets are silicates of calcium and aluminium and are a brownish red and the Pyrope Garnets silicates of magnesium and aluminium have a firey red color. more


Zodiac Gemstone:  Amethyst

Colors:  Purple

About the Amethyst Gemstone:
Derived from the Greek language, the name amethyst means “not drunken” – This is probably an apt description for a gemstone whose color can resemble wine.

The color purple is traditionally associated with royalty and the deep purple colors of an amethyst stone certainly give it a rich and regal appearance

Amethyst is a variety of quartz with purple coloring that has been caused by impurities of manganese or iron.  The gemstones occur in a wide range of purple shades – either as a pure color or as bands of shades of purple through to white.  The appearance of bands of color in an amethyst is an excellent way of differentiating it from other purple stones. A rarer and more valuable amethyst contains red flashes within the purple. more




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