Coral

 

Root letters:

Miim-Ra-Jiim

 

marjan

55:22
يَخْرُجُ مِنْهُمَا اللُّؤْلُؤُ 
وَالْمَرْجَانُ
Yakhruju Minhumā Al-Lu'ulu'uu Wa Al-Marjānu
 

Out of both of them comes pearls and
coral.

55:58
كَأَنَّهُنَّ الْيَاقُوتُ 
وَالْمَرْجَانُ
Ka'annahunna Al-Yāqūtu Wa Al-Marjānu
 

They look like rubies and 
coral.