The most valuable colour of Aquamarine is a rich, sky blue. The lustre is vitreous and not exceptional. The most common art of aquamarine is the emerald type. It is also available in oval or pear shaped. The green of Aquamarine is a watery green without any trace of yelow and is due to iron, not chromium, as can be seen from examination with a gemmological stethoscope. It also has a grey or violet tinge. Rich blue stone several carats in weight are among the most valuable of secondary gems pale or green stones are less valuable than rich blue stones.For children recomended ratti 2 to 3, for minor 3 to 5 ratti and for adults 5 to 15 ratti. Ring should be made of only Silver. Ring should be worn only on Friday morning and Ring should be worn in Kanistha or Madhyama finger.