MEDIAREPORTSCAREERSVIEWSSIGHTHOLDERSCONTACT ABOUT USSUSTAINABILITY & ETHICSWORLD OF DIAMONDSCAMPAIGNSSTORIES Cookies IP ADDRESSES, COOKIES AND GIFS We may collect information about your computer, including where available your IP address, operating system and browser type, for system administration and to report aggregate information to Our advertisers. This is statistical data about our users' browsing actions and patterns, and does not show personal details that identify you. For the same reason, we may obtain information about your general internet usage by using a cookie file which is stored on the hard drive of your computer. Cookies are small pieces of information sent by a web server to a web browser which allow the web server to recognise the web browser. They help us to improve our site and to deliver a better and more personalised service. They enable us: To estimate our audience size and usage pattern. 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Here is a list of the cookies on our site and what they are used for: 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. 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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, in our site and/or in our communications with you to enable us to know whether you have visited a web page or received a message. 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 email that we sent you or visited a certain page on our site. 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. Our server automatically collects data about your server’s internet address when you visit us. This information, known as an Internet Protocol address, or IP Address, is a number that’s automatically assigned to your computer by your internet service provider whenever you’re on the internet. When you request pages from our site, our servers may log your IP Address and sometimes your domain name. Our server may also record the referring page that linked you to us (eg another website or a search engine); the pages you visit on our site; the website you visit after our site; the ads you see and/or click on; other information about the type of web browser, computer, platform, related software and settings you are using; any search terms you have entered on our site or a referral site; and other web usage activity and data logged by our web servers. We use this information for internal system administration, to help diagnose problems with our server, and to administer our site. 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