# are like a thread of scarlet

"are a deep red like scarlet thread" or "are red and very beautiful". Scarlet thread was very expensive. 

# scarlet

a dark red color that is very similar to the color of blood

# is lovely

"is beautiful"

# are like pomegranate halves

"are red and round like two halves of a pomegranate" or "are red and full and healthy".

# behind your veil

See how you translated this in Song of Songs 4:1.