For a Lifetime

When you purchase a Blacklock engagement ring, you buy something that will last a lifetime. We like to think when you buy one of our engagement rings you become a valued member of the extended Blacklock family.

We are committed to offering exceptional service, including care, repair, and complimentary ring polishing. Our engagement designs are crafted to last a lifetime, and we proudly stand behind their quality.

  • Certification

    For every diamond over 0.50cts an independent certificate from one of the 3 recognised gemological laboratories - GIA / HRD or IGI - will be supplied. In certain instances (upon request / agreed) a certificate will not be supplied.

    Coloured stones of exceptional quality will come with a certificate.

    This documentation is supplied to you upon receipt of the goods.

  • Diamond promise

    We understand that diamonds reflect your life’s journey. Sometimes you want to mark a new chapter in your story or celebrate an important milestone, with this in mind you can upgrade your Blacklock diamond designs with our Diamond Promise. 


    The value of your original diamond / design will be applied to that of your new diamond / design. This will be agreed on a case-by-case basis.

  • Lifetime purchase

    The purchase of an engagement ring is intended for a lifetime. Sometimes this purchase requires flexibility when paying. We want to make sure you get the ring that is needed which may require help when scheduling those payments - we can spread 2 payments over an agreed period of time.

    We will try to help and agree payment terms, where necessary on a case-by-case basis.

  • Cleaning

    This service is available for the lifetime of your ring and not only ensures that your diamonds or gemstones are cleaned but also includes regular checks to confirm that the stones are secure in their settings.



    With appropriate care, your Blacklock diamond ring will maintain its beauty and character for generations to come.

  • Repair

    We ensure that our craftsmanship is of the highest standards and repair all items made by Blacklock Jewellery. Please contact us to discuss the repair and we will take it from there.

  • Warranty

    Any Blacklock engagement ring purchased from us through our site will be have a warranty for 12 months.

Exceptional service

We stand behind the value of our diamonds and believe that the promise of a lifetime and the Blacklock promise of exceptional client care go hand in hand.