The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Charles McGuinness:
Estimate the weight of diamonds and colored stones, loose or set, by their measurements using the Diamond CT program. If youre in a business like gemology, jewelry stores, pawn shops, auction houses, or antique and coin dealers, you are often called upon to make on-the-spot estimates of a diamonds size. With Diamond CT, you can take just a few measurements of the stone and come up with a usable estimate of its weight. Dont overpay when you buy and under-price when you sell! Similarly, if youre called upon to estimate the value of a piece of jewelry, this program takes the risk out of doing the math.The program allows you to estimate the weights of all common sizes, and allows you to tune your estimate with each stones features.If you need a quick estimate, the program includes visual templates for eyeballing the size of common shapes.