Blue sapphire is one of the precious colored gemstones among the big three: Ruby, Emerald, and Blue Sapphire. Blue sapphire is the birthstone for September and has a significant role in astrology.
Neelam is the rashi ratna for Capricorn (Makar) and Aquarius (Kumbh). Blue sapphire best found in Ceylon and also known as Neelam stone in Vedic astrology (Indian Astrology).
The most highly valued blue sapphires are velvety blue to violetish blue, in medium to medium dark tones. The fancy sapphires that people in the trade call padparadscha are very beautiful. They typically have a high per-carat value, too—much higher than other types of fancy sapphires.
Here I am sharing a list of best dark blue sapphire gemstones can be used for astrology and jewelry making. Check the list of best quality sapphire along with the videos and source link: