Lapis Gemstone Information Information * Loose gemstones * Jewelry links Lapis is the gemstone representing the 9th wedding anniversary. It was considered to be an emblem of chastity that blocked the wiles of the devil and ensured the help of the angels. It was also thought to calm the wearer. Lapis was used as a tonic for melancholy and fever. It was worn by judges, and sometimes put in embalmed bodies to represent the heart that was removed. View examples of cut lapis below and prices in our store section.   ENHANCEMENT CODE D Click to view AGTA code. PROPERTIES Refractive Index 1.500-1.670 Hardness = 5-6 (Moh's Scale) Specific Gravity =2.75 Species - Lapis Lazuli Optic Character - Aggregate. Phenomena - None WARNINGS FOR CARE Ultrasonic: Risky Steamer: Never Heat: Poor Chemicals that harm: Hydrochloric acid, cyanide solution   Crystal Structure Crystal system: Isometric, crystals (rare), dense aggregate. MAJOR SOURCES Afghanistan, Chile, USSR Birthstones  January  Garnet February Amethyst March Aquamarine April Diamond May Emerald June Pearl/Alexandrite July Ruby August Peridot September Sapphire October Opal/Tourmaline November Topaz or Citrine December Blue Topaz or Zircon Cabochon is the popular cut used in jewelry for lapis. Cabochons are smooth polished surfaces not faceted. Round cut Oval shape

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