The website www.dtc.com is provided to you by DTC (“we”, “us” or “our”). DTC is the registered trading name of De Beers Global Sightholder Sales (Pty) Limited, a company incorporated in the Republic of Botswana, with address at PO Box, 329, Gaborone, Botswana and registered number CO2008/5689.

This cookie policy (“Cookie Policy”) (together with our website terms of use (“Terms”) and Privacy Policy) applies to your use of the website and sets out information about the cookies that we use on our website.

Our website uses cookies and technologies which are similar to cookies to distinguish you from other users of the website. A cookie is a small file of letters and numbers that we store on your browser or the hard drive of your computer. Cookies help us to improve the website and to deliver a better and more personalised service, in particular they enable us to:

  • estimate our audience size and usage pattern;
  • store information about your preferences and customise website according to your individual interests;
  • speed up your searches; and
  • recognise you when you return to the website.

You can control how your browser handles cookies that we set. You can choose to refuse all cookies, be prompted before a cookie is saved to your hard drive or only accept cookies from certain websites. Information on deleting or controlling cookies is available at www.AboutCookies.org. However, if you use your browser settings to block cookies, you may not be able to use some of the features and functionality on the website.

We use the following cookies:

  • Essential cookies. These are required for the operation of our website. They include, for example, cookies that enable you to log into secure areas of our website sign-up to our newsletters and make use of registration services.
  • Analytical/performance cookies. These allow us to recognise and count the number of visitors and to see how visitors move around our website when they are using it. This helps us to improve the way our website works, for example, by ensuring that users are finding what they are looking for easily. 
  • Functionality cookies. These are used to recognise you when you return to our website. This enables us to personalise our content for you, greet you by name and remember your preferences (for example, your choice of language or region).
  • Targeting cookies. These cookies record your visit to our website, the pages you have visited and the links you have followed. We will use this information to make our website more relevant to your interests.
APPLICATION
Name Purpose Expiry Category
__utma tracks each user's number of visits, and the time of the first, the previous, and the current visit (presumably partly for double checking). 2 years Performance cookie
__utmb are used to track how long you stay on a site - when a visit starts and approximately ends 30 Minutes Performance cookie
__utmc are used to track how long you stay on a site - when a visit starts and approximately ends. This expires quickly End of browser session Performance cookie
__utmz tracks where a visitor came from (search engine, search keyword, link) 6 Month Performance cookie
#sitename#lang Stores Language for the Website End of browser session Functionality cookie
ASP.NET_SessionId SessionId what .NET Manages for maintaining session End of browser session Strictly necessary cookie
.ASPXAUTH Auth Id, which .NET assigns as a uniqueue ID to authenticate user on each request End of browser session Strictly necessary cookie
_ga Google analytics cookie. Used to distinguish users. 2 years Performance cookie
__utmt Google analytics cookie. Used to throttle request rate. 10 Minutes Performance cookie
NREUM This cookie collects the navigation start time with restricted environment End of browser session Performance cookie
NRAGENT This cookie collects end users' page metrics data End of browser session Performance cookie
INFRASTRUCTURE
Name Purpose Expiry Category
AWSELB AWS Classic Load Balancer Cookie:
Load Balancing Cookie: Used to map the session to the instance.
Removed after session with server closes Strictly necessary cookie
AWSALB AWS Classic Load Balancer Cookie:
Load Balancing Cookie: Used to map the session to the instance.
1 Hour Strictly necessary cookie

We may use “clear GIFs” (aka “web beacons” or “pixel tags”) or similar technologies on our website and/or in our e-mails. A clear GIF is typically a one-pixel, transparent image (although it can be a visible image as well), located on a web page or in an e-mail that communicates to us whether you viewed an e-mail that we sent you or visited a certain page on our website. A clear GIF may enable us to relate your viewing or receipt of a web page or message to other information we hold about you.

This Cookie Policy was last updated on 31 March 2019.