I just want to record this point. I know the previous e-gallery of the Royal Collection website said the Oriental Circlet was altered in 1888. Why Queen Victoria might have wanted that I cannot think. However, I suggest the year was 1858 and the 5 might have been confused with an 8. Easy to do in handwriting. Why? I do believe the Oriental was one of the tiaras altered in 1858 to replace diamonds under the Hanoverian claim.