Appropriate gems can be selected through Numerology. Here's how:

Born on the 1st, 10th, 19th or 28th of any month?
You are a number 1 person
You are ruled by the Sun
Favourable Colours: Red and orange
Gemstone: Ruby
Benefit: It brings power, wealth, attraction and dynamism to the wearer

Born on the 2nd, 11th, 20th or 29th of any month?
You are a number 2 person
You are ruled by the Moon
Favourable Colours: white, cream, green
Gemstone: Pearl or Moonstone
Benefit: These, especially the pearl, calm the nerves and bestow long life and good luck upon the wearer.

Born on the 3rd, 12th, 21st or 30th of any month?
You are a number 3 person
You are ruled by the Jupiter
Favourable Colours: yellow, mauve, violet and purple
Gemstone: Yellow Sapphire
Benefit: This gem is noted for conferring wealth, success, beauty, knowledge and good fortune to its wearer.

Born on the 4th, 13th, 22nd or 31st of any month?
You are a number 4 person
You are ruled by the Uranus
Favourable Colours: blue, electric blue and grey
Gemstone: Gomedh , Hessonite or Lapis Lazuli
Benefit: The Gomedh strengthens the circulatory system and the heart, brings good fortune, wealth and charm to its wearer.

Born on the 5th, 14th or 23rd of any month?
You are a number 5 person
You are ruled by the Mercury
Favourable Colours: green
Gemstone: Emerald
Benefit: The Emerald is known to bring prosperity to ones children, wealth, expansion, fortune and self-confidence to its wearer.

Born on the 6th, 15th or 24th of any month?
You are a number 6 person
You are ruled by the Venus
Favourable Colours: blue and pink
Gemstone: Blue Diamond
Benefit: Wearing a diamond assures love, wealth, luxuries, comforts and good fortune.

Born on the 7th, 16th or 25th of any month?
You are a number 7 person
You are ruled by the Neptune
Favourable Colours: light blue and green, white, cream and yellow
Gemstone: Cat's Eye
Benefit: This gem bestows name, fame, wealth, popularity, longevity and magnetism upon its wearer.

Born on the 8th, 17th or 26th of any month?
You are a number 8 person
You are ruled by the Saturn
Favourable Colours: Dark Blue
Gemstone: Blue Sapphire
Benefit: This gemstone is perhaps the most powerful one of the entire range of gems, its effects are generally felt within 48 hours and it can either make one a king or a pauper instantly. If it suits you, it will confer long life, protection from accidents and black magic and unimaginable wealth.

Born on the 9th, 18th or 27th of any month?
You are a number 9 person
You are ruled by the Mars
Favourable Colours: Red Coral
Gemstone: Blue Sapphire
Benefit: This gem protects one from ones enemies, ensures a happy married life, blesses one with healthy children and brings good fortune.