Though in spite of all these varieties of blue gems, one of the most treasured and sought-after is the enchanting beautiful royal blue sapphire – deep and luscious, as unfathomable as a mountain lake.
To possess a Royal Blue Sapphire is like being the keeper of
„tears from the eyes of the goddess Saitya”
(The Color Treasury of Gemstones, Dr. E. Gübelin)
我觉得后面一个不够DEEP