1 On average, a sofa bed can cost anywhere from $150 for a lower end model to as high as $1,400 for a deluxe bed.2  The popular Handy Living CAC4 on Amazon retails for $360 to $450. 3  For instance, Target sells a variety of sofa beds that come in different designs, sizes, and functions. Type. 2  A pull-out sofa bed will usually be much more expensive than a futon. 3  Quality. 4  Some futons can be purchased for as low as $100, but the quality of the frame and mattress are not as high.
1 Diamonds of the same carat weight can vary in size. 2  For example, a one-carat round diamond could measure 5.9 mm in diameter, while another one-carat round diamond could be 6.5 mm wide. 3  Broader diamonds with larger millimeter measurements create greater visual impact.
The carat weight measures the mass of a diamond. One carat is defined as 200 milligrams (about 0.007 ounce avoirdupois). The point unitâequal to one one-hundredth of a carat (0.01 carat, or 2 mg)âis commonly used for diamonds of less than one carat.All else being equal, the price per carat increases with carat weight, since larger diamonds are both rarer and more desirable for use as gemstones.A poorly cut 1.0 carat (200 mg) diamond may have the same diameter and appear as large as a 0.85 carats (170 mg) diamond.) The depth percentage is the overall quickest indication of the quality of the cut of a round brilliant. Ideal round brilliant diamonds should not have a depth percentage greater than 62.5%.