Art Deco Vintage Platinum Old European 0.88 ct Diamond Engagement Ring GIA

This is a platinum solitaire engagement ring with a 0.88 ct Old European Brilliant Cut diamond, described as Vintage / Art Deco. The center stone is J color, VVS1 clarity, in a 4-prong setting. The ring is size 7 and weighs 2.8 grams. Top width is 9.1 mm and bottom width is 1.1 mm. Top thickness (height) is 6.4 mm and bottom thickness is 0.8 mm. It is stamped "Plat" on the inside. It comes with a GIA report, #GIA 522185****.