| Yellow Sapphire Gemstone Information Information * Loose gemstones * Jewelry links Yellow Sapphire ranges in color from pale to canary yellow, gold, honey, and brownish yellow. The lighter and brighter colors are the most common. |
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ENHANCEMENT CODE H Click to view AGTA code. PROPERTIES Refractive Index 1.762-1.77 Hardness = 9 (Moh's Scale) Specific Gravity =4.0 Species - Corundum Optic Character - Double Refraction. Phenomena - Chatoyancy (Very Rare) WARNINGS FOR CARE Ultrasonic: Usually Safe Steamer: Usually Safe Heat: Poor; may sometimes Improve color, but may cause loss of color Chemicals that harm: Borax |
Crystal Structure  Crystal system: Hexagonal (trigonal), dipyramidal, barrel and tabloid shape. MAJOR SOURCES Australia, Thailand, Sri Lanka, Myanmar, India, Kampuchea, Kenya, Tanzania, US, Madagascar |
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 | ||
| Common Cut Examples. |
