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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

Famous Birthstone: October’s Sun-god Opal

There are three main types of opal: white, black and fire. Some precious opals emit spectral colors from every angle, each one quickly flashing and glowing as bright as the next. This phenomenon is called play-of-color and has enchanted people throughout the ages.

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A Conversation with Martin Katz – A Jeweler Like No Other

From micro-pave to mega-watt glam, jeweler Martin Katz dazzles Hollywood stars and titans of industry alike. In fact, you’ll spot his spectacular jewelry collections on many of the celebrities strolling the red carpet at the Emmy Awards this month. (more…)

How to Travel Brazil: Gemstones Edition

Brazil is a tropical locale well-known for exotic animals and plants, futból, sandy beaches, and jungle-clad mountains. Some of these mountains rise like monuments in the middle of cities, such as Sugarloaf Mountain in the ever-colorful and playful Rio de Janeiro. The country also contains the renowned Amazon River, not to mention superb gemstones in a kaleidoscope of saturated, luscious colors.

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Famous Birthstones: The Rockefeller Sapphire

Blue sapphire has been a symbol of nobility and faithfulness for centuries. Traditionally worn by clergy and royalty, sapphire continues to hold its place as one of the “Big Three” gemstones today (with emerald and ruby being the other two).

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Famous Birthstones: Peridot – The Green Goddess

The August birthstone is sometimes referred to as the extreme gem due to the fact that peridot is found in volcanic rock and meteorites. The word peridot comes from the Arabic faridat which means gem.

Do you have an August birthday and call peridot your birthstone? Celebrate this month in style with a look at one of the world’s finest peridot gems, The Green Goddess. (more…)

Hot Gemstones

We’re always on the lookout for trends, and we spotted a fun one. Several gemstones that never had much cachet are now in vogue. These beauties have been showing up on the runway and in fashion magazines.

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Celebrate Flower Power with a Gemstone Flower Ring

Flower jewelry has the power to inspire rebirth and renewal anytime of year. Its charming characteristics perfectly match the tastes of the glamorous and fashion-forward.

Whether at a gala or just for the everyday, wearing flower rings is a way to channel spring’s vibrancy and add color to your wardrobe.

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Choosing Between White Gold, Platinum, Palladium, and Silver

It’s time to pick the metal for your engagement or wedding ring! White metals are a popular choice for engagement ring settings, and they can make your perfect diamond look even more stunning. But you’re not sure which white metal is the best choice for you. We’re about to make the decision easier for you by looking at four choices for white metals: silver, white gold, palladium and platinum.

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Gems in a Jurassic World

Jurassic World is about to roar through theaters, and that made us nostalgic for the original movie, Jurrasic Park (1993) – especially the memorable scene where scientists extracted dinosaur blood from a mosquito trapped in amber.

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Under the Scope: Unique Diamond Inclusions

Imagine the diamond that is perfect for you. Is it a colorless and flawless round brilliant stunner? Perhaps you’re partial to a Fancy Vivid pink diamond? Or maybe you treasure an heirloom diamond jewelry piece with an old mine cut?

We have compiled a unique list of diamond inclusions that are so interesting and distinctive that they just might cause you to have second thoughts about your dream diamond.

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Famous Birthstone: Pearl – La Peregrina

Many of us share a timeless attraction to pearls— it’s a deep admiration that extends across cultures and continents. Maybe it’s because pearls are associated with water, a fundamental element of life. Or maybe it’s because this June birthstone comes from a living thing. Natural pearls are highly sought after due to their rarity. For those who prefer cultured pearls, you’re in luck: cultured freshwater and saltwater pearls are widely available, and in so many colors and shapes that there are pearls to suit a variety of tastes. (more…)

How Light Affects a Diamond’s Appearance

“Shine bright like a diamond,” is a phrase that can be understood in a variety of ways, depending on the diamond light source. In fact, there’s often a noticeable change in how a diamond appears in sunlight, in candlelight, and under artificial light. This change proves the importance of understanding how light affects a diamond’s appearance.

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