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Q:	What is the difference between precious stones and semi-precious stones ?
A:	The difference is their hardness. According to moh's, we call the gemstone of which the hardness is over 9 "precious stones" and below 9 "semi-precious stones" Gemstone Hardness DIAMOND   RUBY 10 SAPPHIRE 9 TOPAZ 9 SPINEL 8 AQUAMARINE 8 EMERALD 7.5-8 GARNET 7.5-8 TOURMALINE 7-7.5 AMYTHYST 7-7.5 CITRINE 7 PERIDOT 7 JADEITE 6.5-7 MOONSTONE 6.5-7 OPAL 6-6.5 PEARL 5.5-6.5 ETC. 3-4

Q:	How do we value ruby or any other gemstone ?
A:	Carat, Color, Clarity and Cut are the most important things to value all gemstones. Carat : the larger a gemstone, the more rare Color : the more pure the color in a gemstone, the more rare Clarity : the purer a gemstone, the more brilliant Cut : the better cut a gemstone, the more brilliant You may note that each kind of gemstones has its own characteristics. To buy or to possess them depends on your own personal taste.
	1. BIRTH STONES 2. ZODIAC STONES 3. WEDDING ANNIVERSARY STONES 4. BIRTHDAY STONES Birth Stones Month Stone JANUARY GARNET FEBUARY AMETHYST MARCH AQUAMARINE APRIL DIAMOND MAY EMERALD JUNE PEARL (0R MOONSTONE) JULY RUBY AUGUST PERIDOT (OR SARDONYX) SEPTEMBER SAPPHIRE OCTOBER OPAL (OR TOURMALINE) NOVEMBER TOPAZ DECEMBER TURQUOISE (OR LAPIS LAZULI) Zodiac Stones AQUARIUS JANUARY 21 TO FEBRUARY 21 GARNET PISCES FEBRUARY 21 TO MARCH 21 AMETHYST ARIES MARCH 21 TO APRIL 20 DIAMOND TAURUS APRIL 20 TO MAY 21 SAPPHIRE GEMINI MAY 21 TO JUNE 21 SPINEL CANCER JUNE 21 TO JULY 22 EMERALD LEO JULY 22 TO AUGUST 22 OPAL VIRGO AUGUST 22 TO SEPTEMBER 22 OPAL LIBRA SEPTEMBER 22 TO OCTOBER 23 PERIDOT SCORPIO OCTOBER 23 TO NOVEMBER 21 AQUAMARINE SAGITTARIUS NOVEMBER 21 TO DECEMBER 21 TOPAZ CAPRICORN DECEMBER 21 TO JANUARY 21 RUBY Wedding Anniversary Stones 1. RUBY 10. RUBY 2. SAPPHIRE 11. AMETHYST 3. EMERALD 12. PERIDOT 4. PEARL 13. TOPAZ 5. DIAMOND 14. TOURMALINE 6. JADE 15. SAPPHIRE 7. OPAL 16. EMERALD 8. AQUAMARINE 17. PEARL 9. SPINEL 18. DIAMOND Birthday Stones Day Stone Sunday Ruby Monday Pearl Tuesday Garnet Wednesday Cat’ s - eye Thursday Emerald Friday Topaz Saturday Sapphire