1.08 by 1.08 inches square per instrucion with border and baille;
Sanskrit numerals form the magic square associated with the holy Jupiter and the number three. Gold or silver are the ideal metals here.
The numbers will touch your skin.
The above rendered picture in silver looks battleship gray for some reason. This is NOT how the item looks in real life. Rather, it looks like a delightful pure light silver, much like the rhodium plated rendering above. (Rhodium is a type of silver.)
Sun (gold), Venus (silver), and Moon (silver) yantras are also available in this store.
All other grahas ("planets" in Jyotish or Vedic astrology) are available by request.
See the book Numerology by Harish Johari for more information.