Jewelry connoisseurs have gone crazy for colored diamonds. And their appetites were practically insatiable in 2013.

Coral is one of the oldest substances in nature to be used in jewelry. For thousands of years, decorative art objects have displayed this  treasure from the sea. The resurgence of vintage coral items at auctions around the world last fall hints that this favored material has enduring style, blooming in shades from pale pink to deep red. Buyers had more choices of period coral collectibles than in past seasons, and many of the pieces sold quite well.

Fall brings the turning of leaves, the golden glow of pumpkins, and the warmth of fires in the fireplace. While yellow is often associated with the sunny skies of summer, its warm tone is a natural autumn hue, and this fall’s auctions have a number of spectacular yellow diamonds that are fitting for the season.

Earlier this month, Pantone—the worldwide authority on color–determined its color of Spring 2014, called “dazzling blue.” As fashion and home décor designs roll out over the coming months, you will surely see lots of this rich cobalt color, and the fall auctions already have a number of “dazzling blue” pieces up for sale.

As seen on the runways, head-to-toe Winter White is one of the hottest trends for this fall. The jewelry appearing at auction houses this fall seems to follow this trend, as a number of spectacular colorless pieces are coming up for auction.