We are not gemstone experts, so we cannot guarantee that the stone is a rose quartz, but we have compared it with other pieces by Tapani Vanhatalo, and rose quartz is not unlikely in that context.
Finnish Modernist Silverplated Necklace with Rose Quartz by Tapani Vanhatalo
Excellent vintage condition. No issues.
Likely not the original chain.
No marks on this necklace.
Height, total: 5,85 cm / 2.3 in
Width: 4,75 cm / 1.9 in
Weight: Pendant only 32 g / 1.1 oz. Including chain: 60 g / 2.1 oz