The Gemstone Education – Diamond: The Most Precious of Gems
Diamonds are among the most prized substances on earth. Their incomparable brilliance, elegance, durability and mystery have captivated our imagination for thousands of years. Considering the endless lore and mysrique behind this regal stone, it’s no wonder that it has come to symbolize the ultimate gift of love and romance.
Not only is a diamond the overwhelming choice for prospective brides and grooms selecting an engagement ring and wedding ring, but the gem is also the birth stone for month of April. Diamonds are also recommended jewelry gift for couples celebrating their 10th, 60th,, and 75th wedding anniversaries.
Buying a major piece of diamond jewelry such as an engagement ring or anniversary ring can be one of the most expensive purchases many of us will ever make. That is why so important to understand the elements behind the quality and cost of a diamond, keep in mind that the value of a stone is determined by the 4 Cs, the Cut, Color, Clarity, and Carat weight.
Cut refers to the execution of the diamond’s design, the skill with which it was cut, the quality of polish, and the overall symmetry of the stone. Diamond cuts are broadly graded as Ideal, Excellent, Very Good, Good, Fair, or Poor. A well cut diamond releases the inner brilliance of the stone and projects its maximum amount of fire and sparkle. A poorly cut diamond allows light to leak out the sides or bottom rather reflecting back to the eye, resulting in a dull diamond that may even have dead spots inside.
Color refers to the presence or absence or color in white diamonds. As a rule, the more white the stone, the greater its value. Even a slight tinge of yellow or brown could have a negative impact on a stone’s value. Most diamonds are graded on the GIA color scale that begins with “D” for colorless and continues all the down to “Z”, with the color becoming more visible as you move down the alphabet. Stones in the D – F color ranges are considered the most valuable, because they are the rarest.
Clarity refers to the presence of surface or internal flaws within a diamond caused during its formation. External 鑽石淨度 marks are known as blemishes, while internal ones are called inclusions. Diamonds are graded for clarity on a scale ranging from “FL, for Flawless (no blemishes or inclusions visible under 10x magnification) to “I” for imperfect (inclusions are visible to the naked eye), with numerous grades and sub-grades in between. The best diamonds, of course, are flawless, but these stones are exceptionally rare, and therefore very costly.
Carat weight refers to the size of the diamond. The carat is the measure of weight for diamonds. One Carat is approximately 200 milligrams, or 100 “points”. For example, a diamond weighting a half Carat would be 50 pointer, and so on. In general, larger diamonds are rarer and have a higher value per carat. However, other factors such as cut, color, and clarity come into play as well in determining a diamond’s value. It’s entirely possible for a smaller stone of exceptional cut, color, and clarity to be worth more than a larger stone of only average quality in these areas.
There are even fancy natural colored diamonds in reds, pink, blue, greens, yellows, browns, and other colors. They vary in color richness or saturation from “Faint” to “vivid”, with the latter grade reserved for diamonds with most vivid and deepest saturation. The value of a fancy color diamond depends largely on the rarity of its color; for instance, reds, and greens, are rarer than yellows and browns; the saturation of the color; and the purity of the color, whether the color is bright and clear or clouded by tinges of other underlying colors. Top grade fancy diamonds are extremely rare and can command tremendous prices. Probably the most famous colored diamond is the Hope diamond, a 45.52 Carats deep blue gem that resides in the Smithsonian Institution in Washington, D. C .