DiamCalc 2.x Standard is just 280 US$.
Upgrade from version 1.x to 2.x: $80 (registered DiamCalc 1.x users only)

IMPORTANT NOTE: THE LICENSE GIVES YOU THE RIGHT TO USE DIAMCALC ON A SINGLE COMPUTER (IDENTIFIED BY THE REGISTRATION NUMBER YOU WERE PROVIDED DURING REGISTRATION). WHENEVER YOU WANT TO USE THE DIAMCALC ON ANY OTHER COMPUTER(S) YOU HAVE TO PURCHASE ADDITIONAL LICENSE(S).

1. Download it from OctoNus Software WWW page or mirror site. The software is locked and will work as a demo-version (Marquise cut only) until purchased.

2. Install the software on the same computer where you plan to use it.If you purchase the upgrade from the DiamCalc 1.x then install the DiamCalc 2.x on the computer where the DiamCalc 1.x is installed
(see "How to install DiamCalc?").

3. Run DiamCalc to be sure that it is compatible with your computer configuration, OS and other installed applications. If you see a message "The software has expired" press OK button, otherwise run Help/Register menu command.

4. You will be presented with the "Register dialog" with the following fields:

- Serial number. It identifies the instance of DiamCalc that you bought. The serial number will be given to you during a purchase process.
- Registration number. It identifies the computer where the software is installed. You may need to write down this number.
- Registration key. It allows to use the software on the specific computer.

5. Click "Buy via Web" button to open your WWW browser at purchasing page then choose preferable purchasing method and go on with the purchase. If your computer does not have an Internet connection or you prefer to connect Internet from a different computer, see topic "Registering DiamCalc from a different computer" section below.

6. Follow instructions on the Web page to complete the purchase.

7. When the purchase is completed, you will be granted with a serial number and a registration key to activate all DiamCalc features. Enter them into "Register" dialog and press Register button. If registration is successful, the next time you start DiamCalc all features will be enabled.
Please notice: Octonus is closed for vacation from 30th of April till 10th of May 2004.
The support and registration may be delayed/postponed during this period. Sorry for inconvenience.

Registering DiamCalc from a different computer

This option can be useful when you install DiamCalc on the computer that does not have an Internet connection (e.g. a laptop system without a modem). You can download DiamCalc to another computer and copy it via diskettes, serial cable connection, Zip drive, or by any other means.

To buy the software, do the following:

1. Follow steps 2-4 from the topic "Purchasing DiamCalc". Write down the Registration Number from the "Register software" window.

2. Launch a Web browser on a different computer and open purchasing page.

3. Follow instructions on the Web page to complete the purchase. When asked about registration number, enter the number that you wrote down.

4. When the purchase is completed, you'll get a serial number and a registration key. Enter them in "Register" window on the computer where DiamCalc is installed. If registration is successful, the next time you start DiamCalc all features will be enabled.

Please report all anomalies to diamcalc@next.msu.ru