Indeed, for some gems, such as diamonds, the price per carat can increase exponentially as the gem size increases. Therefore, a 1 carat stone may cost $1,000 while a 2 carat stone may cost $4,000. This means that good quality sapphires and rubies in larger sizes tend to have a much higher price per carat.
Re: Convert positive # to negative. Hi, if you positive number is in A1, use the following formula to convert it to a negative number =A1*-1 Time values can not be negative. Microsoft MVP http://www.teylyn.com Twitter: http://twitter.com/IngeborgNZ. Microsoft MVP.
1 Start Excel and open your worksheet. 2  Select the cell or cell range that you want to format. 3  On the Format menu, click Cells. 4  On the Number tab, click the Category that you want to change--for example, click Currency. 5  In the Negative numbers list, select the format that you want. On the Number tab, click the Category that you want to change--for example, click Currency. 2  In the Negative numbers list, select the format that you want. 3  Click OK to close the Format Cells dialog box.