Diamond Cut And Diamond Shape Are Not The Same Thing
Although these terms are sometimes used interchangeably, diamond cut, and diamond shape mean different things.
Diamond cut assesses light performance of a diamond and is based on a combination of factors: proportions, symmetry, and polish (the overall surface condition of a diamond’s facets).
What Is The Most Expensive Cut Of A Diamond?
When people talk about someone’s engagement ring, everyone focuses on carat. In reality, it’s the cut of the diamond that can be the biggest factor in the price tag. The Ideal cut diamond, and the super-ideal Astor by Blue Nile™, are the most expensive diamond cuts because they optimize light performance and create the most impressive sparkle.
Established in 1931, the non-profit Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. This laboratory is known for consistency and unbiased diamond grading systems.
Diamonds that are accompanied by GIA grading reports are the most highly valued in the industry. Every loose diamond at Blue Nile has been analyzed and graded by the GIA. You’ll find a GIA diamond certificate on every diamond details page.
Diamond Light Performance Is Measured By The GemEx BrillianceScope® Analyzer
Two diamonds cut with optimal proportions won’t necessarily have the exact same light performance or beauty. For this reason, true light performance is measured by the GemEx BrillianceScope® Analyzer, a patented system that uses spectrophotometer technology to compare diamonds with the same shape.
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