Your answer depends on who issued the 'certificate of authenticity'.
The certificate may authenticate the design, the metal, or the gem stone.
It is possible to purchase real diamond rings from Ebay, however, you it is very difficult to determine from a picture whether the diamond is real or not. You would also need a GIA or IGA certificate to prove it's authenticity. An Appraisal would also be beneficial.
A diamond ring without any certificate does not make sense because you don't have any proof of the diamond's reality.
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.
Armada appears to be a brand name. You can verify the metal and gemstone content of any ring by obtaining a certificate from a certified gemologist. This documents your ring's authenticity based on its components.
COA is an acronym that stands for Certificate of Authenticity.
Yes. Most diamonds' "certificate" will be engraved on the diamond itself, so any jeweler can inspect it.
Information available on the internet suggests that if the owner of a certificate of authenticity for an autograph was to sell a famous autograph then it would fetch far more if sold with a certificate of authenticity than an autograph that was sold without one.
Only diamond can scratch diamond.
Whether or not a ring comes with a Certificate of Authenticity depends on the policy of the jeweler selling the ring. However, if you want a certificate of value for your ring, it is easy to take it to a jeweler and have it assayed.
Diamond Rings - musician - was created in 2008.
COA stands for Certificate of Authenticity.
Diamond Rings's birth name is John O'Regan.