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Quality Grade - Good (A): Dark blue in color. Light does not pass through gem. Entry level for fine jewelry.
Quality Grade - Better (AA): Medium to dark blue hue with moderate inclusions that are visible to the naked eye. Quality comparable to leading independent stores.
Quality Grade - Best (AAA): Medium to rich blue hue with high brilliance. Possesses very minor visible inclusions. Quality comparable to top 5th Avenue or Rodeo Drive jewelers.
Quality Grade - Heirloom (AAAA): Deep blue in hue. Primarily mined from the coveted Ceylon region. Incredible brilliance in both daylight and artificial light. Among the best available in the world.
Approximate Carat Weight: 0.33 carat of Blue Sapphire, 0.32 carat of Diamond.
Approximate Carat Weight: 0.60 carat of Blue Sapphire, 0.70 carat of Diamond.
Approximate Carat Weight: 1.00 carat of Blue Sapphire, 1.26 carats of Diamond.
Approximate Carat Weight: 1.60 carats of Blue Sapphire, 2.06 carats of Diamond.
Approximate Carat Weight: 2.20 carats of Blue Sapphire, 3.10 carats of Diamond.