According to Vedic Astrology, the Ascendant or the Lagna is the degree of the Zodiac Sign that was highest on the Easter horizon at the time and place of birth. The Rising Signs change on the Eastern horizon every 2 hours, as we have 12 zodiac signs, thereby covering the entire Zodiac in every 24 hour day. This is different from your Zodiac Sign as per Western Astrology and is the most important determining factor in an individual’s Kundali.
In Vedic Astrology, for every person at the time of birth, the Rising Sign of Zodiac is unique. For every Ascendant, there is Ruling Planet and an equivalent gemstone is suggested. The table shows Ascendant wise gemstones along with their Ruling Planets (Lord of Lagna):
| Your Ascendant | Your Lagna | Your Lucky Gems by Lagna | Lord of Lagna |
| Aries | Mesha | Red Coral | Mars/Mangal |
| Taurus | Vrishbha | Diamond | Venus/Shukra |
| Gemini | Mithuna | Emerald | Mercury/Budha |
| Cancer | Kark | Natural Pearl | Moon/Chandra |
| Leo | Simha | Ruby | Sun/Surya |
| Virgo | Kanya | Emerald | Mercury/Budha |
| Libra | Tula | Diamond | Venus/Shukra |
| Scorpio | Vrischika | Red Coral | Mars/Mangal |
| Sagittarius | Dhanu | Yellow Sapphire | Jupiter/Guru |
| Capricorn | Makar | Blue Sapphire | Saturn/Shani |
| Aquarius | Kumbha | Blue Sapphire | Saturn/Shani |
| Pisces | Meena | Yellow Sapphire | Jupiter/Guru |