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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

All About Birthstones: Topaz for November

There are two November birthstones that command the attention of consumers and gem connoisseurs alike – topaz and citrine. In this post, we’ll discuss topaz, a gemstone that is widely cherished for its array of colors and distinctive look. (more…)

October Birthstone: All About the Tourmaline

October babies have the pleasure of enjoying two birthstones to commemorate their birthdays –tourmalines and opals. This post is all about the October birthstone, tourmalines. (more…)

September Birthstone: The Sapphire

September’s birthstone, sapphire, is unique among gemstones. It is a very hard gemstone, second only to diamond. Sapphire is a variety of the mineral corundum. While other stones are known for their singular hues, sapphires come in a variety of colors. (more…)

August Birthstone: Peridot, from Earth or from Space

Hailing from the olivine group of minerals, the peridot is a mysterious and thought-provoking gem. Peridot was valued in many ancient and medieval cultures, first in the second century BC in priests’ jewelry and later in the chalices and churches of medieval Europe. Peridot has also been used for centuries as a protective talisman, shielding the owner from evil spirits and “terrors of the night.” (more…)

July and the “King of Gemstones” – The Ruby Birthstone

Few things catch the eye like the ruby birthstone. This July birthstone has a color which can be described as a deep, pure, vivid red. Ruby, a variety of the mineral corundum (which also includes sapphires), is as historically captivating as it is beautiful.

In the ancient language of Sanskrit, ruby is called ratnaraj or “king of precious stones” for its rarity, hardness (second only to diamond), beauty, and for its seemingly mystical powers. (more…)

pearl necklace
Pearls are Regarded as Symbols of Wealth and Power

The June birthstone, the pearl, has a long and rich history. For many young women, pearls are just something you wear when you wanted to look classy and put together. But the unique creation of the pearl, the only gem made from a living creature, tells us that this is an incredibly special little sphere. (more…)

May Birthstone: The Brilliant Green Emerald

May’s birthstone is the brilliant, green emerald. Legends gave the emerald the power to make its wearer more intelligent and quick-witted and its the gemstone for 20th and 35th wedding anniversaries. It was once believed to cure diseases like cholera and malaria, and its color reflects new spring growth, which makes it a perfect choice of a birthstone for the month of May. (more…)

The April Birthstone Sparkles and Shimmers

Shimmering with an internal fire all its own, diamond is one of the world’s most sought-after and adored gemstones. (more…)

Synthetic gemstones
What are Synthetic Gemstones?

Contrary to what many people may think, the word “synthetic” does not mean fake when it comes to gemstones. The term actually comes from the Greek word for “to put together.” People “build” or, more accurately, “grow” synthetic crystals. (more…)

All About Birthstones: Opal for October

October babies have the pleasure of enjoying two birthstones to commemorate their birthdays – tourmaline and opal. Last time we wrote about pink tourmaline, and now we’re going to share with you about opal. (more…)

All About Birthstones: Blue Sapphire for September

September’s birthstone is one of our favorite gemstones at GIA –sapphire. Sapphires have been long associated with royalty and romance (hence the engagement ring of Prince Charles and Princess Diana, and The Royal Couple – William and Katherine!). (more…)