Very Fine Fancy Pink diamond ring featuring a 12.07ct marquise-cut pink diamond. Sold for CHF 6,437,000 (estimate: CHF 3,570,000-6,200,000)

Very Fine Fancy Pink diamond ring featuring a 12.07ct marquise-cut pink diamond. Sold for CHF 6,437,000 (estimate: CHF 3,570,000 - 6,200,000).