You can choose your suitable gem according to your star also. In all there are 27 stars. Each star is ruled by a specific planet. First you should know your star. Then you should find out which planet is the ruler of that star. Only then you get that gem of that planet and choose it to wear.
1. Ashwini:The ruler of this star is Ketu, the gem of Ketu is Cat's Eye. If one wears Cat's eye it would cure different types of diseases and make one health and healthy. He would be attracted by others.
2. Bharani: The ruler of this star is Venus. The gem of Venus is Diamond. Persons born in Bharani star can wear Diamond. Use of Diamond brings material prosperity and happiness.
3. Krittika: Tthe ruler of this star is sun. The gem of Sun is Ruby. Persons born in Krithika star can wear Ruby. Its use produces good health, success in finance and helps to win over enemies.
4. Rohini: The ruler of this star is Moon. The gem is White Pearl. Persons born under Rohini star can wear Pearl as their lucky gem. It brings position, wealth and success in the life.
5. Marigashira: The ruler of this star is Mars. The gem of Mars is Coral. So persons born under Mrigashira can wear coral as their lucky gem. Wearing of Red Coral brings peace of mind, purity of heart, boldness and also helps in controlling anger and wild passions.
6. Ardra: The ruler of this star is Rahu. Its gem is Gomeda. So persons born under this star can wear Gomeda for getting fortune. It also bestows intelligence, fame success in all ventures and peace of mind and self-confidence. The subject would overcoem selfishness.
7. Punarvasu: The lord of this star is guru (Jupiter). The gem that should be worn by these persons is Yellow sapphire (Pukhraj). It brings good luck. It also gives success, fulfiment of desires, healthy body and mind and makes one rich.
8. Pushyami: The lord of this star is Saturn. And gem is Blue Sapphire. Persons born under Pushya star can wear Blue Sapphire as their birth stones and get success. It enables them to get money, riches, prosperity, fame, name, house, property, conveyance and luxuries. Moreover it gives them peace of mind and spiritual inclination.
9. Ashlesha: The lord of this star is Mercury. Its gem is Emerald, persons born under this star should wear Emerald to get success. By wearing Emerald they can get success in life. They will get good rewards for their talent. It washes away their sins. It can bestow happiness and fortune on them.
10. Makha: The owner of this star is Ketu. Its gem is Cat's Eye. Persons born under Makha should wear Cat's Eye to get success in life as their stone. By wearing Cat's Eye they can get name, fame and popularity. It will make them calm and God fearing.
11. Purva Phalguni: Its lord is Shukra, i.e. Venus. So person born under this star should wear Diamond to get success. It can give them status, good family life, luxuries and property. They would get multiple profits through business. It will give them charm and beauty.
12. Uttara Phalguni: Its owner os Surya the Sun. the gem for this star is Ruby. Persons born under Uttara Phalguni can wear Ruby to get luck. It will bestow upon them health, wealth, happiness, good status, success and majestic attraction.
13. Hasta: The owner of this star is Moon. Its gem is White Pearl. So Hasta-born should wear White Pearl as their lucky gem. By wearing Pearl they can get Peace of Mind, Creativity, Longevity, Good health success, wealth, riches, name, fame and also populairy.
14. Chitra: The lord of Chitra is Mars. Its gem is Coral. So Chitra-born person should wear Red Coral to get luck. It enables them to get good health, wisdom, spirituality, success, position and also domestic harmony.
15. Swati: The lord of Swati is Rahu. Its gem is Gomeda. So, Swati-born person should wear Gomeda. This can bring growth in their business or profession. It can ward off any adverse effect of evil eye and black magic. It can make a person active, provide him with high position, name, fame and wealth.
16. Vishaka: Its lord id Guru (Jupiter). Its gem is the Yellow Sapphire. Vishaka-born should wear Yellow Sapphire to get luck. It would bestow royal honour, prestige and health.
17. Anuradha: Its lord is Saturn. Its gem is the Blue Sapphire. So Anuradha should wear Blue Sapphire for a Happyu life. It bestows happiness, prospeity and also wisdom.
18. Jyeshta: The ruler of this star is Mercury. The gem of Mercury is Emerald. So Jyeshta-born persons wear Emerald as their lucky gem. It would help them to improve their behaviour and conduct. Their anger would cool down, and they will enjoy a happy life.
19. Moola: the ruler of this star is Ketu. The gem of Ketu is Cat's Eye, so Moola-born persons should wear Cat's Eye as their lucky gem. It will give them from relatives and friends and win over enemies.
20. Purvashada: the ruler of this star is Venus. The gem of Venus is Diamond, so Purvashada born persons should wear Diamond as their lucky gem. By wearing Diamond they would get wealth, comfort, house, vehicle, landed property etc.
21. Uttarashada: The owner of this star is sun. The gem for Sun is Ruby. Hence Uttarashada-born persons should wear Ruby as their lucky gem, it brings wealth, and prosperous life.
22. Shravana: The owner of this star is Moon. The gem Moon is Pearl. Persons born under this star would wear White Pearl. They will have a fulfilling life, and their position would improve.
23. Dhanishta: The ruler of this star is Mars. The gem of Mars os Red Coral. So the Dhanishta-born person should wear Red Coral as their lucky gem. It brings success in all their ventures. They rise in profession. It protects them from dangers and accidents.
24. Shatabhisha: The owner of this star is Rahu; the gem of Rahu is Gemeda. So Satabhisha-born persons should wear Goemda as their lucky gem it ensures success in life, good health, and a happy life and strength to win over estranged relatives.
25. Purvabhadra: The owner of this star is Jupiter. The gem of Jupiter is Yellow Sapphire. So Purvabhadra-born persons should wear Yellow Sapphire as their lucky gem. This would get them back their lost prosperity, children's welfare, promotion in service, professional success and happiness.
26. Uttarabhadra: The owner of this star is Saturn. The gem of Saturn is Blue Sapphire. So Uttarabhadra-born persons should wear Blue Sapphire as their lucky gem. It brings success in the profession or business, acquisition of building and landed property, name, fame and respect in society.
27. Revati: The owner of this star is Mercury. The gem or Mercury is Emerald. Hence, Revati-born persons should wear Emerald as their lucky gem. Emerald brings comforts in life. It would also help them to acquire property and success in their profession.