About Garnet Gemstones

About Garnet Gemstones : description

Garnets are a set of closely related minerals that form a group, resulting in gemstones in almost every color. Red garnets have a long history, but modern gem buyers can pick from a rich palette of garnet colors: greens, oranges, pinkish oranges, deeply saturated purplish reds, and even some blues.
Red garnet is one of the most common and widespread of gems, found in metamorphic rocks (which are rocks altered by heat and pressure) on every continent. But not all garnets are as abundant as the red ones. A green garnet, tsavorite, also occurs in metamorphic rocks, but it’s rarer because it needs unusual rock chemistries and special conditions to form.
Demantoid is a rare and famous green garnet, spessartine (also called spessartite) is an orange garnet, and rhodolite is a beautiful purple-red garnet. Garnets can even exhibit the color-change phenomenon similar to the rare gemstone alexandrite.
All garnets have essentially the same crystal structure, but they vary in chemical composition. There are more than twenty garnet categories, called species, but only five are commercially important as gems. Those five are pyrope, almandine (also called almandite), spessartine, grossular (grossularite), and andradite. A sixth, uvarovite, is a green garnet that usually occurs as crystals too small to cut. It’s sometimes set as clusters in jewelry. Many garnets are chemical mixtures of two or more garnet species.

About Garnet Gemstones: garnet, the january gemstone

GARNET BIRTHSTONE MEANING & HISTORY

The name “garnet” originates from the medieval Latin granatus, meaning “pomegranate,” in reference to the similarity of the red color. Garnets have been used since the Bronze Age as gemstones and abrasives. Necklaces studded with red garnets adorned the pharaohs of ancient Egypt. Signet rings in ancient Rome featured garnet intaglios that were used to stamp the wax that secured important documents. The clergy and nobility of the Middle Ages had a preference for red garnets.
Garnet is actually a group of several minerals. Five of these – pyrope, almandine, spessartine, grossular and andradite – are important as gems. Pyrope and almandine range from purple to red. Spessartine is found in exciting oranges and yellows, while andradite is mostly yellow to green (the gem variety demantoid). Grossular may have the widest range, from colorless through yellow to reddish orange and orangy red, as well as a strong vibrant green called tsavorite.

The Smithsonian’s antique pyrope hair comb is one of the most famous pieces of garnet jewelry (pyrope is from the Greek pyrōpos, which means “fiery-eyed”). A large rose-cut garnet sits at the crest, much like a queen serenely surveying her court. The pyrope garnets that decorate this tiara-like jewel came from the historic mines in Bohemia (now part of the Czech Republic), and these rich red beauties were extremely popular during the Victorian era (1837–1901), when this piece was fashioned.

Read here more about the Garnet gemstones as Birthstone

WHERE IS GARNET FOUND?

Garnets come from many different regions and countries. Bohemia was the primary source of the red pyrope garnets so popular during Victorian times. Today, the African continent supplies much of the world’s garnet. Namibia is now producing demantoids, and most of the bright green tsavorites in the market come from Kenya, Tanzania and Madagascar. Namibia and Tanzania are also key sources of the rich orange-to-yellow spessartine garnets. For many years, Southern California’s Little Three mining area was known for producing this spellbinding gem, The birthstone for January is also found in Myanmar, Brazil, Iran, Afghanistan, Pakistan, India and Sri Lanka, among other countries.

Care and Cleaning of the Garnet Gemstones

The different types of garnet range between 6.5 and 7.5 on the Mohs scale of hardness. This means that this gemstone is more susceptible to damage than rubies, sapphires and diamonds. So while not all garnets are good candidates for daily wear, they are ideal for earrings, brooches and pendants. Give thought to how you store your garnet jewelry. If you let it rub against harder gems – again, think diamonds, rubies and sapphires – it can be scratched. And in turn garnet can scratch softer gems, such as opals or pearls.
Most garnets are not treated. Rarely, however, some garnets might be fracture filled, whereby treaters try to improve the apparent clarity of the gem by filling surface-reaching breaks with a glass-like substance. Such treated stones require special care. Regardless, use of a soft brush with warm soapy water is always safe for cleaning garnets. Ultrasonic cleaners are usually safe, except for stones that have fractures or have been fracture filled. Steam cleaning is not recommended.