Are The Marbles Fragile

I accidentally dropped the box containing my marbles on a carpeted floor and done must ave struck the wall nearby and shattered.
Are the marbles fragile. The marbles ordered are all fine. They were originally part of the temple of the parthenon and other buildings on the acropolis of athens. γλυπτά του παρθενώνα also known as the elgin marbles ˈ ɛ l ɡ ɪ n are a collection of classical greek marble sculptures made under the supervision of the architect and sculptor phidias and his assistants. This is particularly true of the comparatively fragile marbles classified under soundness groups c and d which may need additional fabrication before or during installation.
Marble has been used as a building material for centuries and is easily recognizable by its graceful movement and delicate veining. The groups a b c and d should be taken into account when specifying marble for all marbles are not suitable for all building applications as per astm c503. But they should be cool enough by then the marbles roll off the machine at 2 400 degrees. Just wanted you to know i got my order intact but the free cracked marbles are indeed fragile.
Like most natural stone materials marble is extremely durable. We really should wait longer said sturtz noting that the marbles are more fragile when they are hot.