Synonymous today with engagement rings is the classic 6 prong solitaire setting. In 1886 Charles Lewis Tiffany was the first to design the concept of a raised diamond above a simple band, allowing light to pass through the diamond from all angles.
As a collector of Vintage and Pre Loved Tiffany & Co. fine diamond jewellery I am also a buyer as well. This is my advice based on my own experience of buying pre-loved branded diamond jewellery. It has taken me time and experience to become an expert in this niche trade so I do hope the information is useful.