Their arrangement is considered sacred in almost all the countries of Asia, including, India, Nepal, Sri Lanka, Singapore, Myanmar, Cambodia, Vietnam, Indonesia, Thailand, and Malaysia, regardless of religious and cultural differences.
The insignia is: Late Thai astrologer Horacharn Thep Sarikabutr has given the meaning of these nine gems in his Parichad-Jataka (chapter 2, verse 21, pages 35–36) translated as follows:[4] "Top quality and flawless ruby is the gem for the Sun, natural pearl for the Moon, red coral for Mars, emerald for Mercury, yellow sapphire for Jupiter, diamond for Venus, blue sapphire for Saturn, hessonite for Rahu (ascending lunar node), and cat's eye for Ketu (descending lunar node).
In the Hindu Garuda Purana, chapter 68, verse 17, it is stated by the narrator, Sri Suta Goswami that: "Pure, flawless gems have auspicious powers which can protect one from demons, snakes, poisons, diseases, sinful reactions, and other dangers, while flawed stones have the opposite effect.
Ages ago our yogis discovered that pure metals emit an astral light which is powerfully counteractive to negative pulls of the planets.
Subtle electrical and magnetic radiations are constantly circulating in the universe [...] This problem received attention from our rishis; they found helpful not only a combination of metals, but also of plants and most effective of all faultless jewels of not less than two carats.
One little-known fact is that the proper jewels, metals, or plant preparations are valueless unless the required weight is secured, and unless these remedial agents are worn next to the skin.