Argyle Pink Diamonds

At a Sotheby’s auction in Hong Kong on 7th October 2014, a 8.41 carat fancy pink diamond ring, subcategory purple-pink, fetched a world record of US $17.7 million.

Diamond Clarity – GIA

Materials and images kindly provided by the Gemological Institute of America – GIA Click images for larger view Diamond clarity refers to the absence of  inclusions and blemishes. Diamonds without these “birthmarks” are rare, and rarity affects a diamond’s value. Using the GIA International Diamond Grading System™, diamonds are assigned a clarity grade that ranges … Read More

Diamond Colour – GIA

Materials and images kindly provided by the Gemological Institute of America – GIA Click images for larger view “GIA’s diamond D-to-Z color-grading scale is the industry’s most widely accepted grading system. The scale begins with the letter D, representing colorless, and continues, with increasing presence of color, to the letter Z. Many of these color … Read More

Diamond Carat Weight – GIA

Materials and images kindly provided by the Gemological Institute of America – GIA Click images for larger view Diamonds and other gemstones are weighed in metric carats: one carat is equal to 0.2 grams, about the same weight as a paperclip. Because even a fraction of a carat can make a considerable difference in cost, … Read More

Diamond Cut Scale – GIA

Materials and images kindly provided by the Gemological Institute of America – GIA Click images for larger view “Cut is the factor that fuels a diamond’s fire, sparkle and brilliance.  The traditional 58 facets in a round brilliant diamond, each precisely cut and defined, are as small as two millimeters in diameter. But without this … Read More