Mariah Carey Worn Colombian Emerald & Diamond Necklace Expected to go For $600k at Auction

Mariah Carey‘s emerald and diamond necklace will make you “Obsessed” … but, you’ll need to dole out big money if you’re hoping to gift it this holiday season.

The impressive piece gained international recognition when the singer-songwriter wore it during her Christmas Holiday Special.

The necklace is made from 18K gold with dozens of diamonds running in a circle around the long loop, which once circled Mariah’s neck.

The centerpiece contains three massive Colombian emeralds … carrying a combined weight of nearly 60 carats. The diamonds are 55 carats on their own … so, this necklace isn’t for the faint of heart or the weak of neck!

That might be a bit of an exaggeration, since the 16.5-inch-long piece actually weighs less than a pound … but, with all the drip, you’ve certainly gotta keep your back straight to show off.

BTW … Mariah isn’t the only star to wear the piece. Connie Nielsen — perhaps best known for playing Lucilla in “Gladiator” — also wore the necklace when she presented the “Best Costuming” Oscar at the Academy Awards in March.

The necklace is being appraised at $595,000 … and the bidding starts Saturday, with a mandatory minimum bid of $75,000.