I am looking for a ring to propose to my girlfriend with soon and her only requirements are that she would prefer an Asscher cut diamond. From browsing around blindly for a few months I have deiced that I need to make a decision and I have found a ring which I think is very pretty but my problem is that I don't know anything about jewellery and especially how much things are worth. The specs of the ring are:
Main Diamond:
SQUARE EMERALD CUT
Measurements: 5.42 x 5.36 x 3.74 mm
Carat Weight: 0.92 carat
Color Grade: F
Clarity Grade: VVS1
PROPORTIONS
Depth: 69.8%
Table: 54%
Girdle: Thick
Culet: None
FINISH
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
SETTING
Platinum Channel Set Princess Cut 1/4 ct setting from blue nile ($1650).
Could anyone help me get an idea of how much I should be expecting to pay for something like this?
I also have some pictures if that would help but they are not the best quality as I took them on my phone:


Main Diamond:
SQUARE EMERALD CUT
Measurements: 5.42 x 5.36 x 3.74 mm
Carat Weight: 0.92 carat
Color Grade: F
Clarity Grade: VVS1
PROPORTIONS
Depth: 69.8%
Table: 54%
Girdle: Thick
Culet: None
FINISH
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
SETTING
Platinum Channel Set Princess Cut 1/4 ct setting from blue nile ($1650).
Could anyone help me get an idea of how much I should be expecting to pay for something like this?
I also have some pictures if that would help but they are not the best quality as I took them on my phone:

