Strong’s Greek
G4596 — serikos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
σιρικος
serikos — pronounced say-ree-kos'
from Ser (an Indian tribe from whom silk was procured; hence the name of the silk-worm); Seric, i.e. silken (neuter as noun, a silky fabric):--silk.
1 occurrence in the KJV.
Revelation 18:12
The merchandise of gold, and silver, and precious stones, and of pearls, and fine linen, and purple, and silk, and scarlet, and all thyine wood, and all manner vessels of ivory, and all manner vessels of most precious wood, and of brass, and iron, and marble,