I was recently given a very fragile quilt, made of hexagons in a variation of Grandmother's Flower Garden. The fabric seems to be taffetas or silk in mostly solid colors, with one small stripe forming the ring around the green flowers. This same stripe is used on the upper and lower parts of the backing, and the deterioration is much worse on the back than on the front. The wool batting can be seen clearly exposed in the picture below of a corner folded back.
The deterioration is uniform across the quilt, with the exception of the surprising black velveteen hexagons in the center of each green flower. The piecing and quilting are very skillfully executed, but now the quilt sheds tiny bits of fabric wherever it is placed. I'm sure it was a prized possession in its glory days.