slot demo gemstone gold pg softGame title: Gemstones Gold. Game description: Gemstones Gold by PG Soft | Reels: 5 | Rows: 6 | Pays: Cluster Pays | Volatility: Hh | RTP: 96.71% |PG Soft Slot Demo is a version of the on slot game specifically for the PG Soft provider without the need to register or deposit a penny.