Hebrew word
dar
dar
דַּר
What it means
properly, a pearl
properly, a pearl (from its sheen as rapidly turned); by analogy, pearl-stone, i.e. mother-of-pearl or alabaster
Where it comes from
apparently from the same as dᵉrôwr (דְּרוֹר)
How the King James translates it
Every place it appears 1
Esther1:6