Taste the Difference white flesh peaches and nectarines, imported by Poggi, are in-store now.
Royal concentrates on top quality varieties of plums, nectarines, peaches, and apricots, which Sainsbury rates as "outstandingly sweet and juicy".
The packs retail at £2.99 for a four-pack, and nectarines are currently on special offer at Sainsbury at two packs for £3.98.
José Gandia, Royal president, said: "Royal invests in new varieties that can take up to seven years to come to fruition so we take a long-term view. The team delicately prune every tree and hand pick to ensure fruit is harvested at its best."
Royal is now one of the largest stone fruit producers in Europe. With more than 2,000 hectares, it continues to expand to meet growing customer demand. It also produces strawberries and asparagus.