"particularly gratifying" is a correct and usable phrase in written English.
You can use it when you want to express gratitude, pleasure, or satisfaction about something that has been accomplished. For example, "It was particularly gratifying to hear that my efforts had such a positive outcome."
But he found this photograph particularly gratifying.
For Van Horn, the night was particularly gratifying.
That Minaya was able to use the same words to discuss both Santana and Perez had to be particularly gratifying.
Lord Patten, an international adviser to the awards said it was "particularly gratifying" to have British sculpture and architecture so well represented this year.
He wrote that it was "particularly gratifying" to have led the state party during Mr. Cuomo's successful campaign for governor and his first 17 months in office.
Particularly gratifying in this respect is the complexity of Miguel's feelings for his wife, Mariela (Tatiana Astengo), which have their own integrity and painful truths.
Having waited for years to try surgery, Jordan, who had always liked working with his hands, found plastic surgery particularly gratifying.
EDSA's most recent honor, the ASLA Landmark Award co-sponsored by the National Trust for Historic Preservation for PepsiCo's world headquarters in Purchase, NY was particularly gratifying.
It must have been particularly gratifying for the Italian to see Rooney drill home a couple of close-range efforts before the interval as England disposed of their part-time opponents with the minimum of fuss.
The journey up can take you through natural terrain where other skiers and the paraphernalia of ski resorts can neither be seen nor heard; and the feeling that you have really earned your turns makes the descent particularly gratifying.
She has found the lab's engagement with farmers particularly gratifying.
