Carat
Diamonds are weighted carats with one carat weighing about the same as a paper clip, or 0.2 grams. Just as a dollar is divided into 100 pennies, a carat is divided into 100 points which means that a diamond of 50 points weighs 0.50 carats. However, two diamonds of equal weight can have very different values depending on their clarity, color, and cut. Carat weight is the most intuitive of the 4Cs – you expect a larger diamond to be worth more.

Clarity
Because they are created deep within the earth, most diamonds contain unique birthmarks called inclusions (internal) and blemishes (external). Diamonds without these clarity characteristics are rare– and rarity translates to higher cost when purchasing diamonds. Using the GIA Diamond Grading System, diamonds are given a clarity grade that ranges from Flawless to Included (I3).

Color
Colorless diamonds are extremely rare and very valuable - most are nearly colorless with yellow or brown tints. The GIA Diamond Grading System uses letters to represent colors, beginning with D (colorless) and ending at Z (light yellow or brown). Many of these color distinctions are so subtle that they are invisible to the untrained eye but these slight color differences make a big difference in price.

Cut
While diamonds come in many different shapes, including round brilliants, hearts, pears, and marquises, cut has to do with proportion and the arrangement of facets. The sheer beauty of a diamond depends on cut more than anything else, using light to create brilliance, sparkle, and flashes of fire. The GIA Cut Scale ranges from Excellent to Poor. GIA provides a cut quality grade for standard round brilliant diamonds that fall in the D-to-Z color range.

Diamond reports
Any diamond you purchase at Mia Gemma comes with a grading report or an identification report from an independent, accredited gemological laboratory like GIA - your assurance of value, quality, and authenticity. GIA Diamond Grading Reports are the most widely used reports in the industry and offers laboratory grading services and reports directly to the public. GIA only grades unmounted diamonds and we will work to see that your diamond is submitted correctly.

Keep your purchase secure.
Before you surprise your love with a piece of diamond jewelry, have the piece appraised here at Mia Gemma and be sure to ask us about jewelry insurance. Appraisers and insurers rely on diamond grading and identification reports to accurately evaluate the quality and value of gems.

Ask us about having a laser-inscribed Diamond Grading Report number inscribed on the diamond you purchase with us. This provides verification if the diamond is ever lost or stolen. Or, if you prefer, personalized messages can be inscribed as well.

Diamond Guide Courtesy of Gemological Institute of America