I successfully repaired a chip on a quartz worktop last Christmas and still good.
I used a cheap kit from Amazon and it worked perfectly.
Check if you find something for composite sink of your colour.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local