12:21 CH - Thứ Năm | 02/12/2021

Diamond Size Chart and the Meaning of Those Sizes

Diamond size is an important factor affecting the value, aesthetics, and feng shui meaning of each stone. Depending on the purpose of use and personal preferences, buyers can choose diamonds of suitable sizes. In this article, Jemmia will provide essential information about diamond sizes, including measurement standards, meanings, and selection methods according to needs.

What is Diamond Size?

According to GIA Education, diamond size or diamond size is the measurement of the largest-smallest diameter and depth for a round diamond, or length, width, and depth for other cuts such as Oval, Princess, Emerald...

Diamond size is one of the four important quality assessment criteria in the GIA (Gemological Institute of America) 4Cs standard, alongside Color, Clarity, and Cut. Size not only directly affects aesthetics but is also a decisive factor in the market value of a diamond.

In reality, the larger the diamond, the higher its value. Stones with large diameters and significant weight are often sought after by collectors or high-end customers. Because they not only possess material value but also represent the status and unique style of the owner.

See more: How to Read Diamond Specifications

According to GIA Education, diamond size or diamond size is the measurement of the largest-smallest diameter and depth

Diamond Size Chart

In Vietnam, diamond size is usually measured in "ly" (1 ly is equivalent to 1mm in diameter). According to gemstone experts, there is a close relationship between the size and weight (carat) of a diamond. Thanks to this, buyers can estimate the weight based on the stone's size, and vice versa.

Conversion:

1 carat = 0.2 grams (200 milligrams) = approximately 6.4 ly (6.4 mm) (Round cut diamond)

However, customers should note that:

If the diamond is cut too deep → the same 1 carat but the ly will be smaller than 6.4 mm.
If cut too shallow → the ly will be larger than 6.4 mm but will look less brilliant.
For other cuts like Princess, Oval, Marquise, etc., the ly size corresponding to 1 carat will differ.

Therefore, when choosing diamonds, you need to understand both carat and ly.

Common diamond sizes are 4 ly, 4.5 ly, 5 ly, 5.4 ly, 6 ly, 6.3 ly, 6.8 ly, 7 ly, 7.2 ly, 8 ly, 8.1 ly, 8.6 ly, 9 ly, 10 ly. You can easily convert size to weight by knowing that 1 carat of diamond is 6.4 ly. Note that the conversion result from ly to carat will be approximate.

Carat (ct)	Size (mm)	Ly (mm)
0.005 ct	~1.0 mm	1.0 ly
0.015 ct	~1.5 mm	1.5 ly
0.03 ct	~2.0 mm	2.0 ly
0.06 ct	~2.5 mm	2.5 ly
0.10 ct	~3.0 mm	3.0 ly
0.17 ct	~3.5 mm	3.5 ly
0.25 ct	~4.0 mm	4.0 ly
0.36 ct	~4.5 mm	4.5 ly
0.50 ct	~5.0 mm	5.0 ly
0.66 ct	~5.5 mm	5.5 ly
0.80 ct	~6.0 mm	6.0 ly
1.00 ct	~6.4 mm	6.4 ly
1.25 ct	~6.9 mm	6.9 ly
1.50 ct	~7.4 mm	7.4 ly
1.75 ct	~7.8 mm	7.8 ly
2.00 ct	~8.2 mm	8.2 ly
2.75 ct	~9.1 mm	9.1 ly
4.00 ct	~10.2 mm	10.2 ly

Actual image of diamond size for you to easily choose the right size for suitable jewelry

Meaning of Diamond Size

Diamond owners or collectors always pay special attention to the size of the stone. Depending on the purpose of use - such as feng shui, aesthetics, or investment - the diamond size will have different meanings and values.

Meaning of Diamond Size in Feng Shui

Diamonds or diamond jewelry such as diamond rings, diamond earrings, diamond necklaces, or diamond bracelets are considered the pinnacle of energy and feng shui. It carries special meaning in the daily life and career of the owner. The ly measurement of a diamond represents a different concept, hope. Buyers choose "auspicious" numbers. The special feng shui meanings of each "auspicious" diamond size:

A 5 ly diamond carries the power of advancement and authority.
A 6 ly diamond brings great fortune and prosperity to the owner.
An 8 ly diamond represents wealth and prosperity.
A 9 ly diamond signifies eternity. Above all, it brings peace and happiness to the owner.

Along with these precise sizes, people also look for smaller diamonds. The characteristic is that the sum of digits in the diamond's name equals 9. Some popular sizes are 4.5 ly, 5.4 ly, 6.3 ly, 7.2 ly, and 8.1 ly. These numbers also represent eternity.

Choosing diamonds according to feng shui brings wealth and power to the owner. Along with that, it also brings good fortune in health and love.

In Diamond Valuation

You already know that diamond size is part of the 4Cs. It contributes significantly to diamond valuation. Typically, larger diamonds are rarer and more valuable. However, this does not mean that the value of diamonds increases steadily with size. It also depends on the other 3Cs: Color, Clarity, and Cut. By understanding this, you can buy quality diamonds at the right price.

How to Choose Diamond Size to Bring Luck and Fortune?

In feng shui, each number carries its own meaning, affecting the owner's fortune, relationships, and career. Therefore, choosing the right diamond size is not only about aesthetics but also helps attract positive energy, luck, and smooth sailing.

At Jemmia, you can receive consultation from Mr. Kiệt Hột Xoàn or Jemmia's experts with many years of experience in the diamond field. Experts at Jemmia will not only help you choose the right size for your destiny but also provide advice on cut, color, and jewelry style to maximize the diamond's energy.

📞 Contact us immediately at 0838 353 333 or Zalo Jemmia Diamond to be advised by diamond experts on products that suit your needs and budget.

The above are our answers regarding diamond size. You are looking to buy a beautiful diamond with a good feng shui size. Please contact hotline 0838 353 333 for Jemmia Diamond to assist you.