I am looking for a rectangular, emerald-cut Aquamarine gem, to be made into a ring. I've found the following Aquamarine on GemsNY in the link below, and it's the right shape, size, clarity and color. However, it's significantly higher in price than other Aquamarine gems I've found and looks like it's been in the market for a while (GIA cert in 3/17/2020).
www.gemsny.com
I'm hoping that someone with experience can tell me if this gem is a good deal, a good cut, as well as whether to trust GemsNY's AAAA rating. If it's not a good deal, are there any recommendations for alternative sources of Aquamarines at a good value? TIA - Cheers!
Note: This is my first post so I apologize if I've left out any important information. Please let me know if there's any info I can provide to clarify.

GIA Certified 6.33 cts. Emerald Cut Aquamarine
I'm hoping that someone with experience can tell me if this gem is a good deal, a good cut, as well as whether to trust GemsNY's AAAA rating. If it's not a good deal, are there any recommendations for alternative sources of Aquamarines at a good value? TIA - Cheers!
Note: This is my first post so I apologize if I've left out any important information. Please let me know if there's any info I can provide to clarify.