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#Ruby is the July #birthstone and one of the most coveted gems. In ancient India they called it the “king of gems,” and today it can command the highest per-carat price of any colored stone. Visit 4Cs.GIA.edu to learn what to look for before you shop. Courtesy: @omiprive

#Ruby is the July #birthstone and one of the most coveted gems. In ancient India they called it the “king of gems,” and today it can command the highest per-carat price of any colored stone. Visit 4Cs.GIA.edu to learn what to look for before you shop. Courtesy: @omiprive

Art Deco engagement ring, circa 1930. Embellished with delicate engraving and sparkling side stones, this ring is centered by a 1.20 carat EGL certified old European cut diamond with K-L color and VS2 clarity. Via Diamonds in the Library.

Art Deco engagement ring, circa 1930. Embellished with delicate engraving and sparkling side stones, this ring is centered by a 1.20 carat EGL certified old European cut diamond with K-L color and VS2 clarity. Via Diamonds in the Library.

The Logan Sapphire brooch contains one of the world's largest Ceylon blue sapphire gemstones at 422.99 carats. This magnificent gem comes from Sri Lanka, and is surrounded by twenty white diamonds.

The Logan Sapphire brooch contains one of the world's largest Ceylon blue sapphire gemstones at 422.99 carats. This magnificent gem comes from Sri Lanka, and is surrounded by twenty white diamonds.