Cookie Policy
Last updated: 15 January 2026
What Are Cookies
Cookies are small text files that are stored on your computer or mobile device when you visit a website. They are widely used to make websites work more efficiently and to provide information to website owners about how their site is being used.
Cookies help us remember your preferences, understand how you interact with our website, and improve your overall experience. They also enable us to provide personalised content and targeted advertising that may be relevant to your interests.
How We Use Cookies
CrystalAlluvium uses cookies and similar tracking technologies for several purposes:
- Essential Website Function: To enable basic website functionality and security features
- User Experience: To remember your preferences and settings for future visits
- Analytics: To understand how visitors use our website and identify areas for improvement
- Marketing: To deliver relevant advertisements and measure the effectiveness of our marketing campaigns
- Performance: To monitor website performance and ensure optimal loading speeds
Types of Cookies We Use
Necessary Cookies
These cookies are essential for the website to function properly and cannot be disabled. They are usually set in response to actions you take, such as setting privacy preferences, logging in, or filling in forms. You can set your browser to block these cookies, but some parts of the site may not work properly.
Analytics Cookies
These cookies help us understand how visitors interact with our website by collecting and reporting information anonymously. We use Google Analytics to gather insights about website usage, popular pages, and user behaviour patterns. This information helps us improve our website and services.
Functional Cookies
These cookies enable enhanced functionality and personalisation. They may be set by us or by third-party providers whose services we have added to our pages. If you do not allow these cookies, some or all of these services may not function properly.
Marketing/Advertising Cookies
These cookies are used to deliver advertisements that are relevant to you and your interests. They are also used to limit the number of times you see an advertisement and help measure the effectiveness of advertising campaigns. We use Google Ads and other advertising platforms that may place these cookies on our website.
Cookie Details
The following table provides specific information about the cookies we use:
| Cookie Name | Purpose | Duration | Type |
|---|---|---|---|
| cookie_consent | Stores your cookie consent preferences | 1 year | Necessary |
| _ga | Google Analytics - distinguishes unique users | 2 years | Analytics |
| _gid | Google Analytics - distinguishes unique users | 24 hours | Analytics |
| _gcl_au | Google Ads - conversion tracking | 90 days | Marketing |
| _gcl_aw | Google Ads - conversion attribution | 90 days | Marketing |
| IDE | Google Ads - ad personalisation and targeting | 2 years | Marketing |
| user_preferences | Stores website preferences and settings | 6 months | Functional |
Third-Party Cookies
Our website may contain content from third-party services that set their own cookies. These include:
Google Analytics
We use Google Analytics to understand how our website is used and to improve user experience. Google Analytics collects information anonymously and reports website trends without identifying individual visitors. You can opt out of Google Analytics by installing the Google Analytics Opt-out Browser Add-on.
Google Ads
We use Google Ads for advertising and remarketing purposes. Google may use cookies to show you relevant advertisements based on your interests and previous visits to our website. You can control ad personalisation through your Google Ad Settings.
Google Fonts
We use Google Fonts to display fonts on our website. When you visit our site, Google may collect information about your visit to improve their font service. This service is essential for proper website display.
Managing Your Cookie Preferences
You have several options for managing cookies on our website:
Cookie Consent Banner
When you first visit our website, you'll see a cookie consent banner that allows you to:
- Accept all cookies
- Reject all non-essential cookies
- Customise your cookie preferences by category
You can change your preferences at any time by clicking the cookie preferences link in our website footer or by clearing your browser cookies and revisiting our site.
Browser Settings
Most web browsers allow you to control cookies through their settings. You can usually:
- View what cookies are stored and delete them individually
- Block third-party cookies
- Block cookies from specific sites
- Block all cookies from being set
- Delete all cookies when you close your browser
Please note that blocking or deleting cookies may affect your ability to use certain features of our website.
Google Consent Mode v2
We implement Google Consent Mode v2, which allows us to respect your cookie preferences while still providing relevant services. When you adjust your cookie settings, we communicate your preferences to Google services, ensuring that tracking and advertising cookies are only used when you have given consent.
This technology helps us balance your privacy preferences with our ability to improve our services and provide relevant content. Your consent choices are automatically applied to all Google services we use, including Analytics and Ads.
Cookie Policy Updates
We may update this Cookie Policy from time to time to reflect changes in our practices or applicable laws. When we make significant changes, we will notify you by posting the updated policy on our website and updating the "Last updated" date.
We encourage you to review this policy periodically to stay informed about how we use cookies and protect your privacy.
Contact Us
If you have questions about our use of cookies or this Cookie Policy, please contact us:
CrystalAlluvium B.V.
Berkenlaan 5
1097 ZE Amsterdam
North Holland, Netherlands
Email: [email protected]
Phone: +31 202277103
Additional Resources
For more information about cookies and online privacy, you may find these resources helpful:
This Cookie Policy is effective as of 15 January 2026 and applies to all visitors of the CrystalAlluvium website.