What is a TW Diamond? Everything You Need to Know

A diamond ornament is a sophisticated combination of several settings. Such a piece f jewelry has several gemstones and crystals ad rating means you have to count them all. Jewelers use the TW diamond ratings to grade and weigh the content of the diamond in an ornament.

What is a TW diamond? The carat total weight of several sets of diamonds is the TW diamond. The total weight of all the diamonds in your jewelry is the CT TW.

This article defines and analyses everything you need to know about TW diamond. Lso, find other meanings of the abbreviations that describe diamond.

Understanding the Abbreviations of Diamond ratings

Understanding the Abbreviations of Diamond ratings
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Shopping for diamonds is a complicated process. Besides the huge sums of money you set aside to spend on precious jewelry, you will encounter a handful of abbreviations that sound like mathematical jargon. understanding each one of these is a gateway to getting that gorgeous ring you’ve always desired without compromising on quality.

Diamond TW vs Diamond CW vs CT vs CTTW

  • Diamond TW: Diamond TW stands for Diamond Total weight. It is the combined weight of various diamonds in a piece of jewelry.
  • Diamond CW: Also, Diamond Carat Weight is how much a piece of diamond weighs.
  • Diamond CT: CT is Carat weight and refers to the weight of one diamond.
  • Diamond CTTW: This abbreviation stands for carat and the total weight of all diamonds combined in one jewelry.

These four seem confusing, right? Here’s the summary.

  • TW and CT TW refer to the Carat Total Weight of all the multiple Diamonds in a jewel added together.
  • DW, CT, and CW are the weight of one diamond stone.

The Importance of Differentiating Between CW and TW

The Importance of Differentiating Between CW and TW
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Carat weight is not equivalent to Total weight. The carat weight is the weight of an entire diamond stone. The total weight is a collection of several diamond weights. As a shopper, differentiating the two will make you understand the price difference.

You will also know why a ring with one big diamond is more valuable than many small diamonds. A diamond’s measure is Carat Weight (CW), while the other ring with many small diamonds measure is Total weight (TW).

Carat total weight (CT WT) is real diamonds because they refer to the weight of diamonds in one big diamond. The weight is only for diamonds and not other stones present on the jewelry like opal, a, or pearls; however, jewelers measure lab-made diamonds in CT TW.

To grasp this better, CT TW means carat total weight.1/15 CT TW represents the collective carat weights of diamonds in jewelry as 15 points.

Differences Between Diamond TW and Diamond CW

Diamond TW Diamond CW
Collective weights of small diamonds Weight of one large diamond stone
Less value than Carat weight More valuable than  diamond TW
The measure is in points Measures in full carat

What is Diamond CT?

CT is an abbreviation for carat and measures the weight of a real diamond. A carat is equivalent to 200 milligrams, with each carat having 100 subdivisions or points. The points make it precise to measure up to the hundredth decimal units.

Diamond CT TW

You need to understand CT TW as it helps you to differentiate the weight from the diamond weight. It stands for the carat and the total weight of numerous diamonds added together on a piece of jewelry.

What you need to understand about CT TW

The ultimate price of jewelry depends on the CTTW that comes from the accent and center stone diamonds. You may find two identical rings with the same CTTW number but at different prices.

  • CT TW on a pair of studs indicates the weight of the two studs, not one.

If you want a higher CT TW, this concept will help you decide and find the appropriate ring with the CT TW you desire. For instance, if each stud has 1 CT TW calibration on it, the total for the pair is 1 CT TW and not 2 CT TW. Many shoppers lose money because of not internalizing this concept.

  • CTTW is the weight of several diamonds on your rings

CT TW is not the weight of one big stone. Also, the weight will not consider other types of gems on the ring, e.g. pearl, emerald, or sapphire.

CT TW VS CARAT: What’s the difference?

CT TW VS CARAT What’s the difference
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Carat total weight (CT TW) is different from carat. Carat is the weight for one piece of a diamond, while the CT TW is the total weight for small diamonds on a piece of jewelry. None of these weights depicts the size of a diamond or pieces of diamond.

What is DW or Diamond Weight (DW)? How is it different from Diamond Total Weight (DTW)?

These two concepts sound similar, but they are different. A DW is the weight of a single diamond stone. Although this unique weight matters, it is not everything to look for in a diamond.

A diamond’s size determines its weight, the two are different, but identical sizes do not mean identical weight. The stones might weigh the same, but the appearance differs. For example, if a ring has a 1 DW, it means the ring has a one-carat stone. Small diamonds do not make to 1-carat weight.

How about the DTW?

How about the DTW
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DTW is the Diamond Total Weight. It is the combined weight of all the pieces of natural diamonds in a piece of jewelry. If you get a ring with 1 DTW, then it does not indicate a one-carat stone but a combination of several diamonds that make the one carat in total.

1/10 (0.1) CT TW Diamond is the weight of a diamond stone as 10 points.

CTTW represents the accumulated weights of the smaller diamonds in a piece of jewelry, and it features in points. A carat’s round dimension is 3.02×3.02×1.82mm, while the points are 100 parts of a carat. That means 1/100 of a carat is 0.01. The value of a 0.1-carat diamond is about $70 – $100, depending on clarity, color, and cut.

Carat Total Weight (Ct. Tw.)

If your diamond earrings come with Ct. Tw, what does it mean? These abbreviations stand for Carat Total Weight. That will be the total sum of individual diamonds on the pair. If you find an abbreviation, say, 2 CTW, rings combined with carat weight, Total Weight, and not 4 CTW. Each ring will bear 1 Carat Total Weight.

Total Carat Weight (CT TW) and Diamond Prices

Total Carat Weight (CT TW) determines a diamond’s price. CT stands for carat while TW is the total weight. Thus CTTW is the abbreviation for carat total weight. It is a metric value that measures the diamonds found on jewelry.

Any crystal of diamond on a ring depends on its carat weight. A diamond stone that weighs the same as small diamonds on a ring has different prices.

That means a 1 Ct is more valuable than 1 CTTW. The reason is large diamonds are not readily available, thus commanding the prices.

Diamond Size vs Carat Size

Evaluating diamonds is dependent on weight and not size. The stone’s size does not in any way relate to the carats it bears. A diamond can be big-sized but have more carats, and vice versa. Although variations in cut and shape can make a diamond look smaller or large, the carat weight may differ.

Video showing Diamond Size using fingers.

Never choose a diamond based on a diagram that projects large diameters and larger carat weight. These will be inaccurate and disappointing. Gemstone experts advise that you pick shallow diamonds with less than 1-carat weight.

Meaning of points in diamonds

Diamonds weighing 1-carat are rare. Smaller ones are more common, which makes it logical to measure them in points instead of carats. A carat comprises 100 points, and a point is a hundredth of a carat.  If you get a diamond 0.2, that means it is a fifth of a carat.

How Carat Weight Influences Value of Diamond


The weight of a diamond in carats determines its price. A diamond stone that weighs one or several carats is rare to find. If found, it will trade at a higher value than the readily available smaller diamonds.

Even if the small diamonds were collectively the same weight as a large stone, they will still be of lesser value. An example is a 1-carat cluster ring and a 1-carat solitaire. The two weigh the same, but the solitaire is several times pricier than the cluster.

Additionally, the solitaire is a full carat hurdle while the diamond clusters’ weight is less a full carat.


What’s the value of a 1/10 TW diamond?

First, it’s crucial to know that 1/10 is a collectible weight of small diamonds, a tenth of a carat. The weight is equivalent to around 2.0 grams, and its worth lies between $70 till $100.

What’s the size of a 1/10 carat diamond?

A 1/10 carat diamond means that its weight is a tenth of a carat. The actual size of a  .10 carat diamond is 10 Carat Diamond with dimensions 14 × 14 × 8.44mm.

How to tell a real diamond using a flashlight?

To tell if a diamond is genuine with a flashlight is easy. The light will help you to see a diamond’s sparkle with your naked eyes. Place your stone under a flashlight and observe the light reflections.

You will see scintillation, brilliant, and fire-like reflection. Real diamonds reflect light and give an exceptional sparkle and rainbow with bright shimmers off the stone.

How do I rate or value my diamond necklace?

If you’ve got a diamond necklace that you would like to rate, you need to consider the price per carat. Comparing diamonds will degrade your jewelry as the different carat weights differ.

Each stone bears its carat weight thus, it would be wise to divide the cost of individual stones and divide by the carat weight. That way, you will arrive at the price per carat.

To get the exact value of your necklace, a diamond weight estimator will come in handy. It is a sheet that includes cutouts for varied shapes and sizes. Though it is an estimator, it can reveal the diamond’s size versus its carat weight.

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