NEW YORK — Glenn Schlossberg has become sole owner of Jump Apparel here, after buying out his partner of 2 1/2 years, Wayne Diamond. Terms of the deal were not disclosed.

Jump, which had sales of more than $12 million last year, produces junior and misses’ moderate-price eveningwear.

Diamond continues to head another company, Diamonds Run Ltd., which makes junior and misses’s moderate-price day dresses as well as eveningwear.