Yes. Most diamonds' "certificate" will be engraved on the diamond itself, so any jeweler can inspect it.
Not all diamonds come with certification of authenticity.
any gemological lab in any country can validate real diamonds or gemstones and their authenticity
Laboratories that evaluate the quality of diamonds issue certificates. As well, a diamond may come with a Kimberly Certificate, certifying that the diamond is not a blood diamond. If you have a different type of certificate, your local jeweler can help you understand its purpose and authenticity.
Women and Diamonds - 1924 is rated/received certificates of: UK:U
Diamonds on the Inside - 2012 is rated/received certificates of: Australia:PG
Dateline Diamonds - 1965 is rated/received certificates of: UK:U
The Knave of Diamonds - 1921 is rated/received certificates of: UK:A
Diamonds and Dimples - 1918 is rated/received certificates of: UK:U
Say It with Diamonds - 1935 is rated/received certificates of: UK:A
Rough Diamonds - 1995 is rated/received certificates of: UK:PG
You can buy lab-grown diamonds from various retailers both online and in physical stores. Look for reputable sellers who provide certificates of authenticity for their lab-grown diamonds to ensure their quality and integrity. Examples of popular lab-grown diamond brands include Brilliant Earth, James Allen, and Ada Diamonds.
Jack of Diamonds - 2001 is rated/received certificates of: Netherlands:16