Things to know when buying diamond jewelry

For most people, buying a piece of diamond jewelry is a new experience.

Things to know when shopping for diamonds

For most people, buying a piece of diamond jewelry is a new experience.

However, don’t feel worried or pressured about this, as the quality characteristics of diamonds are clear and simple.


From the discovered rough diamond to the perfect diamond embedded in the jewelry, there is a meticulous and painstaking manufacturing process.

10 popular diamond shapes (cuts).

– Round: This is the most popular shape because it allows the highest light refraction through 58 small cross-sections.

– Princess: This is the only shape without the rounded corners of a diamond and is often used in engagement rings.

Radiant rectangle: This shape is similar to Princess but the corners are horizontal rather than pointed.

– Emerald: The layered structure makes the diamond less reflective, but in return, it shows clarity more clearly, so choose a diamond with fewer inclusions

– Cascading square (Asscher): Having a similar structure to Emerald but being square, a standard Asscher diamond will have a square center when seen through the cut.

– Marquise: This shape can maximize the diamond’s carat weight and create an elongated feel for the ring finger.

– Oval: This shape also optimizes reflective ability like round, but creates the feeling of a larger diamond and the finger looks more elongated.

– Teardrop/pear shape (Perl): The characteristic of this shape is that it is pointed at the top and round at the bottom like a drop of water.

– Heart shape (Heart): This is probably a romantic shape that girls really like.

– Cushion: This shape is similar to a “pillow” with rounded corners, creating the feeling of a wide surface and thick light reflection.


Transparency is a measure of the number and size of small defects in a diamond such as impurities, stains, bubbles, etc. Most of these defects are microscopic and do not significantly affect beauty.

Transparency measurement parameters include:

– Flawless (FL), Internally Flawless (IF): Flawless, almost without defects.

– Very Very Slightly Included (VVS1, VVS2): Very bright, it is difficult to see the defect under 10x magnification.

– Very Slightly Included (VS1, VS2): Quite bright, but impurities can still be seen with the naked eye.

– Slightly Included (SI1, SI2): Impurities can be seen with the naked eye.

– Included (I1, I2, I3): This is the poorest quality of the diamond, with many defects and can be seen with the naked eye.

The fewer flaws a diamond has, the higher its value


The weight of diamonds is calculated in carats (equivalent to 0.2 grams).

Just like a tall person is not necessarily as heavy as a short person, the size of a diamond does not accurately reflect its weight.

The value of diamonds typically increases exponentially based on weight


Color is the second most important factor in determining diamond value after cut because the human eye tends to detect sparkle first (thanks to the cut) and then color.

The natural color of diamonds is usually white (colorless).

Colorless diamonds are extremely rare as they tend to present themselves as yellow or light yellow

Diamonds that do not belong to the D-Z color chart are called Fancy Color diamonds.

Cut and grind

Cutting is a human factor, but it greatly determines the value of a diamond.

When cut with the right proportions, light is refracted and completely reflected to the surface, making the diamond brighter and more sparkling.

Cutting is a human factor, but it greatly determines the value of a diamond

The cutting levels in descending order include: Ideal (ideal), Excellent (perfect), Very good (very beautiful), Good (beautiful), Fair (fair), Poor (poor).


This is an important factor to help you determine the origin and value of the diamond you intend to buy.

The certificate is an important factor that helps you determine the origin and value of the diamond you intend to buy

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