2010年8月25日星期三

Genuine Diamond Certificate

In today diamond market, it easy for retailers to con individuals into buying good quality diamonds watches MeasurementsThe diamond is measured by the millimeter through a measuring instrument. The dimensions are commonly dubbed as ;maximum-minimum x depth;.Carat sizeWhen diamonds are weighed, they are measured by the carat to the thousandth. One carat is roughly 1/142nd once. The word carat originates from a practice of measuring a carob seed in India.Girdles Found at the Edge of the diamondThe girdle runs between the crown and the diamond bottom. The thickness of a girdle is usually described by a range, because it could vary in the thickness.ClarityClarity is determined by the dimensions of the inclusions and/or irregularities of the item. With the help of an IGI microscope, the grader can examine the qualities of the diamond clarity. Grading of the clarity could have listings such as ‘VVS’, ‘SI’ and ‘I’.PlotThe plot provides data about the uniqueness of the diamond. Like fingerprints, the plot has every characteristic of the diamonds imperfections and physical measurements. With this data, a buyer could verify through the grader (or lab) that the diamond is the right one. The plot is usually plotted in graph format.CutletThe ;pointy; facet of the lower of part of the diamond is called a Cutlet. The purpose of the cutlet is to prevent unwanted chipping. Note that some diamonds do not have cutlets.ColorUnder precise lighting, the colors of a diamond can fall under categories of D to Z, D being the highest grade. The colors are determined by comparing the subject diamond with excellent graded diamonds.