IMG_3423 - Spider egg sac ?

IMG_3423 -  Spider egg sac ?

Observation - IMG_3423 - Spider egg sac ?. Description: Tiny round ball found hanging from a 'spider' thread on some grass. It has obviously been broken (not by me), so contents presumably have died. The casing was hard. Size about 7mm diameter. Is it possibly the egg sac of a Nursery web spider?

Tiny round ball found hanging from a 'spider' thread on some grass. It has obviously been broken (not by me), so contents presumably have died. The casing was hard. Size about 7mm diameter. Is it possibly the egg sac of a Nursery web spider?