X blue, fine ((twined)) linen, marble, silk

“Linen” From Boyd’s Bible Dictionary:

(flax). Used for stately robes (Gen. 41:42); priestly vestments (Ex. 28:42; Lev. 6:10); temple veil (2 Chron. 3:14); choral gowns (2 Chron. 5:12), and ordinary dress. Symbol of purity (Rev. 15:6); of luxury (Luke 16:19).

“Silk” From Boyd’s Bible Dictionary:

(Seric stuff). Silk hardly known to ancient Hebrews. Some fine linen fabric is supposed to be meant (Prov. 31:22; Ezek. 16:10,13). Undoubtedly known in N. T. times (Rev. 18:12).

“Linen” From Concise Bible Dictionary:

Linen
Various Hebrew and Greek words are translated “linen,” and there can be no doubt that linen made of flax was known in ancient Egypt and to the Israelites; but cloths generally are called “linen” whether made of cotton or flax, some being distinguished as “fine linen,” such as was worn by the priests, kings. The word shesh, often translated “fine linen” and “fine twined linen” (for the curtains of the tabernacle, etc.) signifies “whiteness,” and is applicable to both fine linen and cotton (Ex. 26:1,31). Joseph was arrayed in “vestures of fine linen” (Gen. 41:42). The wrappings on the ancient Egyptian mummies were for a long time judged to be cotton, but by the use of the microscope they have been discovered to be linen.

“Silk” From Concise Bible Dictionary:

In Ezekiel 16:10, 13 the word is meshi, and refers to some very fine substance like hair, fine silk. In Proverbs 31:22 it is shesh, which is fine linen. In Revelation 18:12 it is σηρικόν, silk.
Purple Silk

Strong’s Dictionary of Hebrew Words:

Transliteration:
shesh
Phonic:
shaysh
Meaning:
or (for alliteration with 4897) shshiy {shesh-ee'}; for 7893; bleached stuff, i.e. white linen or (by analogy) marble
KJV Usage:
X blue, fine ((twined)) linen, marble, silk