• Hailey Baldwin finally revealed a close-up look at her engagement ring from Justin Bieber.
• The ring is featured prominently on the cover of Vogue Mexico's September issue.
• Her ring is estimated to be worth $600,000 and is from Solow & Co. in New York City.

It didn't take long for Hailey Baldwin and Justin Bieber to confirm their whirlwind engagement after the rumors emerged in early July, and the couples' fans have since been keeping an eye out for a close-up shot of Baldwin's ring.

The 21-year-old model initially gave her Instagram followers a sneak peek of the ring on Monday, but now she's finally putting it front and center for the September cover of Vogue Mexico.

The stunning cover shot, taken by photographer Bjorn Iooss, shows Baldwin draping her right hand towards the camera to show off her sparkling ring.

Gemologist and diamond expert Grant Mobley told INSIDER that the ring has an estimated cost of $600,000 and appears to be about eight carats. Mobley also thinks the oval shape is an elegant, smart choice.

"An oval is an elongated brilliant cut, resulting in an optical illusion that the stone is larger than it really is, so it tends to look larger on the finger," Mobley told INSIDER. "Also, oval shapes are very comfortable to wear and natural-looking on the finger — especially when talking about diamonds as big as Hailey's. Without any other diamonds surrounding it, the main diamond really does all the talking here."

Bieber worked with New York-based jeweler Jack Solow of Solow & Co. to design the ring, and the jeweler told People that Bieber was very hands-on with the process. 

"In the end, Justin wanted something that would gracefully accentuate Hailey's beautifully shaped hands," Solow told People. "We settled on an oval stone that was just exceptional in its length and grace."

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