Photographers finally caught a look at Jennifer Aniston's engagement ring after two months, and already comparisons have begun between her diamond and that of her tabloid rival, Angelina Jolie.

Critics have responded strongly to Aniston's rock from fiance Justin Theroux, with some calling it oversized and gaudy, and others stirring a debate about whether Aniston or Jolie has the more impressive stone.

CLICK HERE to check out photos comparing the engagement rings of Jennifer Aniston and Angelina Jolie.

"[Aniston's ring] looks like a radiant cut center diamond, approximately 8 carats," jewelry designer Peter Meksian told Us Weekly.

As for the value of the gigantic diamond, experts say it likely cost about half a million dollars.

"Estimated price tag for a top quality diamond of this size: $500,000," Meksian said.

That hefty cost is about the same value that jewelry experts estimate Aniston's ex-husband Brad Pitt paid for the ring he gave fiance Angelina Jolie this spring. Pitt designed the ring himself, creating a tablet-shaped, 16-carat diamond with jeweler Robert Procop. Jolie's ring is estimated to be worth $500,000 as well.

Though Aniston's ring is enormous, not everyone is a fan. One jewelry design expert who talked with The Daily Mail offered some criticism about the look of Aniston's engagement ring.

"Jennifer's engagement ring is valuable, for sure, but a stone that size is not exactly sophisticated," the jewelry expert said. "In fact, one might argue that it is downright gaudy. It looks like it belongs on the hand of a Real Housewife. I love Jennifer's clean and elegant aesthetic, but this ring is completely at odds with that."

Another jewelry designer, David Nygaard, told E! Online that he thinks any size stone, even one as big as Aniston's, can work with the right design, but he didn't think the 43-year-old actress' ring was the right style for her.

"As it is, it may just be unbalanced, a little bulky looking, not pleasing aesthetically. I would have made the band, or the shank, of the ring a little larger, or maybe a split shank," Nygaard said. "After all, today, with so many custom design options available and computer-assisted design, you can have your ring exactly as you want it."