( Amethyst )
Amethyst is crystalline quartz in colors ranging from pale lilac to deep reddish purple. With a relatively high hardness of 7, the February birthstone is a fine facetable jewelry gem for all purposes. Lower grades of material can be cabbed, carved, and made into a great variety of beads and other ornamental objects.
( Aventurine )
Aventurine is a form of quartz, characterized by its translucency and the presence of platy mineral inclusions that give it a shimmering or glistening effect termed "aventurescence". Aventurine has an anti-inflammatory effect and eases skin eruptions, allergies, migraines, and soothes the eyes. It heals lungs, sinuses, heart, muscular and urogenital systems.
( Citrine )
Citrine is the transparent, pale yellow to brownish orange variety of quartz. Fashioned citrines can be large. The lack of eye-visible inclusions is a sought-after citrine quality. In the days before modern gemology, its tawny color caused it to be confused with topaz. Citrine is also the birthstone of November (with Topaz).
( Emerald )
Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine. Highly saturated green color defines high quality emerald. Emerald cuts have concentric parallel rows of facets and beveled corners. Emerald is also the birthstone of May.
( Ruby )
A ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires. Ruby is also the birthstone of July.
( Sapphire )
Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide (α-Al2O3) with trace amounts of elements such as iron, titanium, cobalt, lead, chromium, vanadium, magnesium, boron, and silicon. Sapphire is also the birthstone of September.
( Topaz )
Topaz is a clear, smooth gem that looks like a diamond when cut. Topaz can be found with hues of blue naturally. When heat treated, Topaz can be enhanced to a darker blue, or treated with minerals to make many shades of the mystic fire Topaz. Topaz is also the birthstone of November (with Citrine). And blue topaz is the birthstone of December (with Blue Zircon, Tanzanite, Turquois, and Lapis Lazuli).
( Tourmaline )
Tourmaline can have the most colorful of all gemstones. It occurs in all colors, but pink, red, green, blue and multicolored are its most well-known gem colors. Scientifically, tourmaline is not a single mineral, but a group of minerals related in their physical and chemical properties. Tourmaline is also the birthstone of October (with Opal).
( Garnet )
Garnets are opaque, transparent to translucent minerals that can be found as individual crystals, pebbles, or clumps of inter-grown crystals. Garnets are most commonly found with reddish shades, but can be, orange, yellow, green, purple, brown, blue, black, pink, and colorless. Garnet is also the birthstone of January.
( Moonstone )
Moonstone is part of the mineral family of feldspars. It's an opalescent stone that can be found in colorless form as well as peach, pink, green, gray, yellow, brown, and blue. The play of light seen in Moonstone is called adularescence, and its clarity ranges from transparent to opaque. Moonstone is also the birthstone of June (with Pearl)
( Aquamarine )
A splendid blue gemstone whose name originates from the Italian word for seawater, embodies the splendor of the sea. A member of the beryl family, aquamarine is a sister to the rich green emerald. It can be found in a range of pale blue hues and aqua green colors. Aquamarine is also the birthstone of March.
( Rose Quartz )
Rose quartz is one of the many quartz varieties used as a gem material. It gets its name from its delicate pink color, which ranges from very light (almost white) to medium-dark. The most appealing color typically occurs in larger sizes, and small rose quartz specimens with good color tend to be rare.