Gianni Versace 527 - Elizabeth Debicki - The Crown
The glasses seems to be the Versace model 527, probably in Tortoise (code 900) but possibly Black. The frame has small oval lenses and the two large, round gold Medusa logos on the temples.
The Versace sunglasses can be see in Season 6, Episode 1 which takes place in the year 1997. This model is period correct.
There is currently one of these for sale on eBay in the UK.
Elizabeth Debicki plays Diana Spencer, Lady Di, in the Netflix series The Crown.
In Season 6 she wears several pair of sunglasses including Chimi 06 sunglasses.
Reference: Gianni Versace 527, Tortoise (code 900)