This is how we'll grade your diamonds at Diamond Buyer Orlando
At Diamond Buyer Orlando there is 4 grading processes that make up the total grade for each diamond. Having a skilled diamond buyer makes a difference when it comes to your overall grade in the diamond buying process. Diamond Buyer Orlando makes sure you get the highest appraisal possible. More about how we price diamonds below.
The cut of a diamond is the most important factor in determining how we price diamonds:
fire (the scattering of white light into all the colors of the rainbow)
brilliance (internal and external white light reflected from a diamond)
scintillation (the amount of sparkle a diamond produces, and the pattern of light and dark areas caused by reflections within the diamond).
Unlike the rest of the 4Cs (colour, clarityand carat weight), the cut is determined by the skilled diamond cutter, so this is a factor that should not be comprised on when selecting your diamond.
A diamond’s cut is not about its shape, but rather how well a diamond’s facets interact with light. Precise artistry and workmanship are required to fashion a stone so its proportions, symmetry, and polish deliver the magnificent return of light only possible in a diamond.
A diamond’s cut is measured on a scale from Excellent, Very Good and Good to Fair and Poor.
How and why we price diamonds by color
Diamonds occur in all spectrums of colours. White diamond range from colourless – the purest, rarest and most valuable – to varying degrees of yellow. They are graded on a colour scale from D (colourless) to Z (heavily tinted).
The diamond colour evaluation of colourless (white) diamonds is based on the absence of colour.
As a result, a chemically pure and structurally perfect diamond has no hue, and therefore a higher value. GIA’s D-to-Z diamond colour-grading system measures the degree of colourlessness by comparing a diamond under controlled lighting and precise viewing conditions to diamonds of established colour value.
The GIA’s diamond D to Z colour grading scale is the industry’s most widely accepted grading system. The scale begins with the letter D, representing colourless, and continues, with increasing presence of colour, to the letter Z.
Although many of these colour distinctions are so subtle that they are invisible to the untrained eye; however, these distinctions make a very big difference in diamond quality and price.
Natural fancy colour diamonds are graded differently, as they lie outside of the white diamond colour range and are extremely rare and valuable.
How and why we price diamonds by clarity
The diamond’s clarity and finish are graded under magnification using standard viewing conditions, and multiple graders.
The first grader examines the diamond to locate any clarity and finish characteristics as well as evidence of treatments such as fracture filling or laser drilling. At the same time, the grader verifies all weight and measurement data captured in the prior step. The grader then assigns an opinion of the diamond’s clarity, polish and symmetry.
If the diamond is to receive a full grading report (as opposed to a dossier), a diamond plot is also created, mapping the diamond’s interior and exterior flaws.In it, the grader indicates the size, position, and nature of each clarity characteristic.
Finally, the diamond’s culet size and girdle thickness are also assessed.
A second grader then takes the diamond through the same process, once again identifying each clarity characteristic, evaluating the polish, symmetry, culet, and girdle, and checking for the presence of any treatments. This grader then submits a second independent opinion of the diamond. Depending on the diamond’s carat weight, quality, and the degree of agreement between graders, a senior gemologist may review the previous grading information and render a third opinion.
Grading results are finalized once there is sufficient agreement on grades.
How and why we price diamonds by carat
A diamond’s weight is measured in carats – the standard unit of weight used for gemstones.
1 carat = 0.2 grams, or 200milligrams. The higher the carat, the more rare and valuable the diamond.
Diamonds are priced in various carat weight brackets. Carat weight alone has the greatest impact on price when the rest of the 4Cs are equal.
It increases exponentially at certain weights.
The most popular carat weight brackets are 0.50ct, 0.75ct, and 1.00ct. Each carat can be subdivided into 100 ‘points.’ This allows very precise measurements to the hundredth decimal place.
Diamond weights greater than one carat are expressed in carats and decimals.