Carats vs MM or *CTE: How stone sizes are measured

Introduction to Moissanite and Diamonds

Moissanite and diamonds are both popular choices for use in jewelry due to their beauty and durability. Moissanite, a lab-grown gemstone, has recently gained popularity for its visual similarities to diamonds and more affordable price points. However, there are differences when comparing moissanite and diamonds, including carat size.

Moissanite Carat Size vs Diamond

One key difference between moissanite and diamonds is how their carat size is perceived. Moissanite tends to appear larger than diamonds of the same carat weight due to its higher refractive index, which measures how much light is refracted or bent as it passes through the gemstone. This means that a moissanite of a certain carat weight may appear more significant to the naked eye than a diamond of the same weight.

It is essential to consider this difference in appearance when comparing moissanite and diamonds in carat size. Instead of relying on appearance alone, a millimeter-to-carat weight conversion chart or calculator is recommended to compare the two gemstones accurately. This can help consumers make informed decisions about which stone is best for their needs and preferences.

CARATS: Why we list mm or millimeters or say “Carat equivalent” (CTE)?

Unlike diamonds, moissanites are sized in millimeters. Why is that? Moissanites are measured as such because they weigh less than an actual diamond. There is about a 15%-18% weight difference between both of the stones.

How do mm and carat sizing compare?

Different gemstones will have different weight translations and different styles of cuts with the same diameter measurements will weigh different. A good example is a 7.5mm cushion moissanite; it is the rough weight equivalent of a 2-carat cushion cut diamond. On the other hand, a 7.5mm round moissanite is equivalent to 1.50 carat round cut diamond. At Lovelee, we usually list our jewelry in the approximate carat size to avoid confusion. All stones will be within .25-.5

What is Carat Size?

Understanding Carat Size

Carat size is a measure of the weight of a gemstone. It is often used as a factor in determining the overall size of a piece of jewelry. The term "carat" is derived from the ancient practice of using carob seeds to measure the weight of gemstones. One carat is equal to 0.2 grams, or 200 milligrams.

Carat Weight vs. Physical Size

It is important to note that the physical size of a gemstone does not necessarily correspond directly to its carat weight. For example, a diamond cut with a shallower depth or a more spread-out shape may appear more prominent to the naked eye than a diamond of the same carat weight cut with a deeper depth or a more compact form. Similarly, moissanite's higher refractive index can make it appear more significant than a diamond of the same carat weight. This is why it is essential to use a conversion chart or calculator to accurately compare the carat size of moissanite and diamonds rather than relying on appearance alone.

Differences in Carat Size Between Moissanite and Diamonds

Moissanite's Higher Refractive Index

Moissanite is a lab-grown gemstone that has gained popularity recently for its visual similarities to diamonds and more affordable price point. One key difference between moissanite and diamonds is how their carat size is perceived. Moissanite tends to appear larger than diamonds of the same carat weight due to its higher refractive index, which measures how much light is refracted or bent as it passes through the gemstone. This higher refractive index is one of the factors that contribute to moissanite's brilliance and fire, which are characteristics that are highly prized in a gemstone.

Accurately Comparing Carat Size

How to Compare Moissanite and Diamond Carat Size

Using a Conversion Chart or Calculator

One of the most accurate ways to compare the carat size of moissanite and diamonds is to use a conversion chart or calculator. These tools allow you to input the millimeter size of a gemstone and convert it to a carat weight, taking into account the specific characteristics of the stone.

To use a conversion chart or calculator, you will need to know the millimeter size of the gemstone you are interested in. There are several ways to measure a gemstone in millimeters, including using a jeweler's loupe or a digital caliper. It is essential to measure the diameter of the gemstone along its girdle, which is the widest point of the stone.

Converting Millimeters to Carat Weight

Once you have the millimeter size of the gemstone, you can use a conversion chart or calculator to convert it to carat weight. Conversion charts and calculators consider the gemstone's specific properties, such as its refractive index and specific gravity, to provide a more accurate measurement of carat weight.

A conversion chart or calculator can be constructive when comparing moissanite and diamonds. Moissanite's higher refractive index can make it appear larger than a diamond of the same carat weight. Using a conversion tool, you can more accurately compare the two gemstones and make an informed decision about your best choice.

Tips for Choosing the Right Carat Size

Personal Preference and Budget

When choosing the right carat size for a particular piece of jewelry, there are several factors to consider. One of the most important is a personal preference. Some people prefer larger gemstones, while others prefer smaller ones. It is crucial to choose a carat size that reflects your style and taste.

Another factor to consider is budget. Larger gemstones tend to be more expensive than smaller ones, so it is vital to choose a carat size that fits within your budget. The price of moissanite tends to be lower than that of diamonds, so that moissanite may be a more budget-friendly option for those looking for a larger gemstone.

Balancing Carat Size with Other Factors

In addition to personal preference and budget, it is essential to consider other factors when choosing the right carat size for a piece of jewelry. These can include the cut, color, and clarity of the gemstone. A well-cut gemstone can maximize the stone's brilliance and fire, making it appear larger and more sparkling. A gemstone with a higher color grade can also enhance its appearance. In contrast, a gemstone with a higher clarity grade will be free of inclusions that can distract from its overall beauty.

By balancing carat size with these other factors, you can choose a gemstone that is visually stunning and within your budget. Whether you choose moissanite or diamonds, it is essential to consider all of these factors when selecting a gemstone for your jewelry.

So how will this affect my purchase?

Moissanites are priced based on their measurements. No matter the weight of the stone, they are sold strictly on the measurements. The moissanite stones may measure different in weight but will measure close or the same in diameter. We typically list the closest “carat” size to avoid confusion. All of our rings will measure within