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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

A decorative brooch featuring carved green gemstones, pearls, red cabochons, and a blue figure on top
Tips for Purchasing Estate Jewelry

If your pulse quickens at the site of an antique Victorian-era cameo, if an Art Nouveau pastel enamel and pearl pendant piques your nostalgic interest, or if a retro 14-karat gold bracelet seems irresistible, then you’re part of the increasing number of those buying estate jewelry. From the bold geometric shapes of Art Deco to the lacy romanticism of the Edwardian style, estate jewelry offers a wide array of choices for the discerning collector. (more…)

Fancy-Color Diamonds

When it’s time to buy a diamond, many people spend a lot of time educating themselves on the 4Cs of diamond quality, and then determining what the personal trade-offs between those various quality characteristics will be. (more…)

Platinum ring featuring a nearly 13-carat cushion cut zultanite and diamonds.
Zultanite – A Relatively New, Extremely Rare Gemstone Popular in Jewelry Design

Zultanite is an extremely rare gemstone used in jewelry design, and was a popular choice at the 2011 Couture conference, which features the most unique, innovative and inventive jewelry design. Famous jewelry designers such as Stephen Webster, Erica Courtney and Rhonda Faber Green all incorporated zultanite into their collections. Zultanite changes color in light, ranging from a kiwi green with flashes of yellow in sunlight conditions to raspberry hues in candlelight. (more…)