Ok...now I''m looking at another tension, but this time not the curvy type. This one is only 5mm, and at the 870 cost I can get a nice half carat diamond to place in it. 
Here is the diamond I have picked:
$847
Laser Inscription Registry: GIA 6107392075
Round Brilliant
Measurements: 5.15 - 5.19 x 3.23 mm
Carat Weight: 0.53 carat
Color Grade: G
Clarity Grade: SI2
Cut Grade: Excellent
Proportions:
Depth: 62.5%
Table: 56%
Crown Angle: 35.0°
Crown Height: 15.0%
Pavilion Angle: 41.2°
Pavilion Depth: 43.5%
Star length: 55%
Lower Half: 80%
Girdle: Medium, Faceted
Culet: None
Finish:
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Clarity Characteristics: Feather
and here is the setting I am now looking at:
http://www.novori.com/enlarge.php?npn=12656R2&sda=1
Here is the diamond I have picked:
$847
Laser Inscription Registry: GIA 6107392075
Round Brilliant
Measurements: 5.15 - 5.19 x 3.23 mm
Carat Weight: 0.53 carat
Color Grade: G
Clarity Grade: SI2
Cut Grade: Excellent
Proportions:
Depth: 62.5%
Table: 56%
Crown Angle: 35.0°
Crown Height: 15.0%
Pavilion Angle: 41.2°
Pavilion Depth: 43.5%
Star length: 55%
Lower Half: 80%
Girdle: Medium, Faceted
Culet: None
Finish:
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Clarity Characteristics: Feather
and here is the setting I am now looking at:
http://www.novori.com/enlarge.php?npn=12656R2&sda=1