Average retail sale increased 12%, while unit sales declined 2%. Compared to June, when gross sales increased 18% and unit sales were flat, July showed a more moderate top-line result with some renewed softness in unit movement. West: up 15%Category Performance:Diamonds were up 11% in sales and up 9% in average retail sale, while units increased 1%. Sterling Silver & Alternative Metals were up 5% in sales, while units declined 8% and average retail sale increased 14%. Average retail sale remained an important driver of performance, especially in Colored Stones & Pearls and Sterling Silver & Alternative Metals.