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:
An alternative Excel averaging formula that doesn't evaluate zero. Excel's AVERAGE() function evaluates zero values. If you want to exclude zeroes, use these alternatives. Excel's AVERAGE() function considers zero values in its calculations, which is probably what you'd expect, but not necessarily what you want.