Ed. list a wide range of wholesale prices for faceted gem rubies. Prices are dependent on origin, color, size, and clarity: from a low of $100 to $15,000/ ct maximum. Burmese stones in 1/2 to 1 ct sizes with slightly purplish red color and light inclusions range from $300 to $3000/ ct, for example.
The Microsoft Excel ISNA function can be used to check for a #N/A (value not available) error. The ISNA function is a built-in function in Excel that is categorized as an Information Function. It can be used as a worksheet function (WS) in Excel. As a worksheet function, the ISNA function can be entered as part of a formula in a cell of a worksheet. The syntax for the ISNA function in Microsoft Excel is:
Use Excel's ISERROR function. The ISERROR function generally refers to cell references, not hard numbers. Say you want to find out if the range of cells A1:A14000 contains an error. Click your mouse on a blank cell and type the following formula: =ISERROR(A1:A14000). Don't put a period at the end of the function formula. Press Enter.