SGL is the #1 International Gemmological Laboratory

in the United Kingdom to specialize in certifying diamonds and diamond studded jewellery and to offer Mobile laboratory services all over the country. SGL certifies each diamond with thorough detail supported by the latest technology and vast gemmological expertise of a highly qualified team.

Postal Instructions for United Kingdom, Ireland and Scotland

When posting items for grading to SGL please either call or email the laboratory to advise what has been sent and when we can expect it. Once items have been received SGL will call you and send you an email to confirm receipt.

Please address packages to Solitaire Gem Labs. It is advised that words pertaining to the contents of the package such as ‘jewellery’ or ‘diamonds’ be omitted from the outside of the parcel.. If company details are required, i.e., Company name mentioned as a return address, please take precaution by using an acronym, trade name or building number.

Items should always be sent via Special Delivery. SGL accepts no responsibility for damage or loss in the post, either when receiving or returning items.

For any further queries, please reach us on below mentioned details:
Address: LG 07, 14 Greville Street, London, EC1N 8SB. United Kingdom
Contact Number: 0044 20 3176 4270
Email ID:

The Global Canvas

Happy Clients

SGL Instruments

SGL uses state of the art instruments for grading and identification of loose and studded diamonds and gemstones across all it’s laboratories worldwide.

We wish to share this same technology with all our patrons and professionals and hence have introduced a store where anyone with a flair for gemmology can have access to such instruments. An all new SGL Instruments Shop coming soon!

Click Order Now! to know more about the product specs and send us an enquiry.

What Customer’s Say

Powered by