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A very extensive collection of jewelry research. This section covers the history of jewelry, jewelry designers, jewelry signatures, jewelry trademarks, and everything you need to know to identify all your vintage and antique jewelry.
All About Diamonds
Jewelry research and education about diamonds. This includes carat, color, clarity, cut and cost in a diamond. A must read before you purchase an engagement ring.
Here you will learn about the 5 C's of diamonds-Carat, Color, Clarity, Cut, and Cost.
The size of a diamond has the biggest impact on its price. The metric carat, which equals 0.20 gram, is the standard unit of weight for diamonds and most other gems. If other factors are equal, the more a stone weighs, the more valuable it will be.
Here are several ways to express 1 carat:
It is very important not to mistake carat weight as referring to the dimensions of a diamond. It refers to weight only. Why the distinction? Because weight can hide in different parts of the stone. You can have a) well-cut, b) deep, or c) shallow Diamonds. Some may appear larger than others due to its cut.
Prices of diamonds are expressed in the trade as a price per carat. So when we say that the Carat Weight has the biggest impact on the price of the stone, we refer to the unit price per carat, not just the overall price of the whole stone.
It is very common for people to disregard the other C's in favour of getting the biggest possible stone they have budgeted for. Here at diamondgrading.com, although SIZE DOES MATTER, it is just as important for the quality of the stone to be high.
Some people may feel it is more impressive to wear a 2 carat diamond than a 1 carat diamond. But that's not necessarily true. A Ferrari may not be as big a car as an Oldsmobile, but most would consider it more impressive.
How much does "carat weight" affect cost?
The effect of all the different properties of Diamond on Cost is discussed in more detail in the Cost section. For carat weight, let's take a typical Diamond for an example, and see what happens when we take it through different carat weights.
A Diamond of G color and SI1 Clarity will be in one Category of prices when it is between 0.50 - 0.69 carats. When you take that same quality Diamond and increase the size to the next price category, which is the 0.70 - 0.89 carat range, the price increase will be approximately $1,100 per carat. Increase to the 0.90 - 0.99 carat range, and the price increase will be approximately another $800 per carat. Increase to 1.00 - 1.49 carat range, and the increase will be approximately another $800 per carat. If you increase to the 1.50 - 1.99 carat range, the price increase will be approximately $1,200 per carat.
The color of a diamond has the second biggest impact on its price, after carat weight. Did you know that diamonds come in every color of the rainbow?
Grading color in the normal range involves deciding how closely a stone's bodycolor approaches colorlessness. Most diamonds have at least a trace of yellow or brown bodycolor. With the exception of some natural fancycolors, such as blue, pink, purple, or red, the colorless grade is the most valuable.
If a diamond does not have enough color to be called fancy, then it is graded in a scale of colors ranging from Colorless to Light Yellow, "D" through "Z". A diamond with a "D" color is considered to be colorless. If the color is more intense than "Z", it is considered fancy. A fancy yellow diamond fetches a higher price than a light yellow diamond.
The Laboratories only grade diamonds which are unmounted, or "loose", and they do so under special light. Once a loose diamond is mounted on a ring, even the trained professional cannot always tell the difference between, say a "D" color and an "E" or "F" color diamond!
How much does "color" affect cost?
The effect of all the different properties of Diamond on Cost is discussed in more detail in the Cost section. For color, let's take a typical Diamond for an example, and see what happens when we take it through different color grades.
Let's start with a 1.00 carat Diamond of K color and VS1 Clarity. If you move up to an H color, you will pay approximately an extra $1,700 per carat. Move up to F color, the increase will be approximately $1,100 per carat. Improve the color to D and the increase will be approximately $900 per carat.
The clarity of a diamond refers to how clear, or "clean" the diamond is. The more "clean" the diamond, the higher the price. Most diamonds have "imperfections" in them. The clarity scale is a measure of the severity of those imperfections or "inclusions" as it is known in the trade.
For example, a deep break in a diamond which is not that visible when you look at the stone face-up, could sometimes have a greater impact on the clarity of a stone, than a small black crystal which you can see very clearly face-up.
The following is the GIA Diamond clarity-scale:
These stones have no imperfections inside or on the outside of the stone under the magnification of a loupe of 10 power.
These stones have no inclusions under a loupe with a 10 power magnification.
VVS1,VVS2-Very Very Slightly Imperfect
These stones have very small inclusions which are very difficult to see under a loupe with a 10 power magnification.
VS1,VS2-Very Slightly Imperfect
These stones have small inclusions which are slightly difficult to difficult to see under a loupe with a 10 power magnification.
These stones have inclusions which are fairly easy to see under a loupe with a 10 power magnification, or visible to the naked eye.
These stones have inclusions which range from eye visible to very easily seen to the naked eye.
Outside of the GIA Diamond clarity scale is a grade you may have seen called SI3. The Rap Sheet, which is a Trade Publication, honors the SI3 grade which is given out by EGL, the European Gemological Laboratory. It is described as a split between the SI2 and I1 clarity grade.
How much does "clarity" affect cost?
The effect of all the different properties of Diamond on Cost is discussed in more detail in the Cost section. For clarity, let's take a typical Diamond for an example, and see what happens when we take it through different clarity grades.
Let's start with a 1.00 carat Diamond of G color and SI1 Clarity. If you move up to a VS1, you will pay approximately an extra $1000 per carat. Move up to VVS1, the increase will be approximately $700 per carat. Improve the clarity to IF and the increase will be approximately $700 per carat.
The cut of a Diamond is the only property which is totally dependent on man. Although often overlooked, cut is actually one of the most important aspects to consider when choosing your diamond. A Diamond cutter analyzes the rough diamond, and has to determine how to extract the most beauty and most profit out of the rough stone.
Cut refers to not only the shape of the diamonds, but its proportions and finish, factors which determine the sparkle of the diamond.
It is possible to take the same stone, and depending on which method the cutter decides to use, to either cut it into the most beautiful stone it can be despite heavy weight loss and perhaps lower monetary value. Or else, he can cut a stone to its maximum weight and monetary value, but lose some "brilliance" and "sparkle"!
You see, even if you have two equal polished diamonds, both the same carat size, both the same color, both the same clarity, they may look completely different. How? There are many different shapes, and facets in a diamond. The weight can be distributed in different parts of the stone.
The goal in terms of extracting the greatest beauty from a Diamond, is to have light enter a Diamond, disperse the light as it bounces inside the Diamond, thereby producing the different colors and sparkly effect, and finally returning as much light to the eye as possible.
How much does "cut" affect cost?
The effect of all the different properties of Diamond on Cost is discussed in more detail in the Cost section. For cut, it can vary depending on the quality of the Diamond.
The most important "C" you have to think about is COST. The few times you usually hear about cost, it is usually as a "salary guideline" or "buying tips" which may include "advice" to spend about two months salary on a diamond engagement ring. Would you like to know where the idea of two month's salary came from? A marketing person whose job it is to sell as many Diamonds as possible. The reality is that there's no "guideline". There are too many personal factors to consider.
You know your financial situation better than anyone. You have to decide on a budget for how much you want to spend, and/or can afford to spend, and then go out and see what that budget can buy.
How much does each "c" affect cost?
Let's take a typical Diamond, and change the various properties to see how it affects the price:
Pricing Terminology in the Diamond Business
There is some confusion as to how pricing works in the Diamond industry. The price of Loose Diamonds in the wholesale market is stated in Dollars (Pesos, Dineros, Shekel, Italian Lira...) per Carat. This figure is multiplied by the number (or fraction) of carats being bought.
Sometimes Jewelers will quote to retail customers a per carat price or sometimes they will quote a price per stone. So a 0.50 ct. diamond can be quoted as $3,000.00 per carat, which comes to 0.50 x $3,000.00 = $1,500.00 for the diamond, or it can simply stated as $1,500.00 per stone. When buying a piece of Jewelry which may contain one or more type of gem, the price will always be per piece.
When you see T.W., or Total Weight, it will refer to the total carat weight, per gem type (at least they should and usually do break it down by gem-type). So a ring with emeralds and sapphires and diamonds could say:
This refers only to the weight as measured when the gems are loose and unmounted. It has nothing to do with the number of gems contained in the Jewelry. The above example could mean there were 5 emeralds, 7 sapphires, 100 diamonds as easily as it could mean that there were 2 emeralds, 2 sapphires and 2 diamonds.
QUICK CARAT COST QUESTION:
Which would be more valuable? 100 diamonds with a t.w. (total weight) of a carat? Or 2 diamonds with t.w. of a carat?
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