What Is “Hột Xoàn”? How Is “Hột Xoàn” Different from “Kim Cương”?

Diamond is a natural gemstone of high value thanks to its rarity, exceptional durability, and characteristic sparkling beauty. However, did you know that many people still confuse hột xoàn with kim cương? In the article below, Jemmia Diamond will explore with you all the fascinating knowledge about hột xoàn, from the concept and characteristics to the most accurate ways to distinguish it.

What is hột xoàn?

Hột xoàn is another name for a diamond that has undergone a meticulous, sophisticated crafting process by skilled artisans. Unlike the rough, coarse appearance of rough diamonds, hột xoàn sparkles brilliantly like precious gems that are extremely luxurious and eye-catching.

Hột xoàn is considered a symbol of pure and eternal beauty. Therefore, owning this luxury item is the dream of many women. Many people believe that besides its material beauty, hột xoàn also contains a special energy source that brings luck and prosperity to its owner.

Hột xoàn is a diamond that has undergone a meticulous crafting process

Hột xoàn has very high hardness and durability, so it is often used to make jewelry. Despite all environmental impacts, hột xoàn still endures over time, embellishing a luxurious and fulfilling life.

Physical properties of hột xoàn

Hột xoàn is one of the two most well-known forms of carbon, alongside graphite. With impressive hardness and light refraction ability, diamond has become an “ideal” material for both industry and jewelry.

With outstanding physical properties, hột xoàn is also considered a perfect mineral and the top choice for manufacturing abrasive surfaces. The ability to cut diamond can only be performed by diamond itself or cage-like carbon crystals or ADNR, contributing to the creation of intricate lines and perfect gloss for products.

Hột xoàn crystal

Hột xoàn has a perfect cubic structure, with each quaternary carbon atom bonded to 4 neighboring carbon atoms. It is precisely this that creates high symmetry and gives hột xoàn its unique properties.

Unlike hột xoàn, graphite has a parallelogram crystal structure, so its physical properties are completely different from diamond. Diamond has a high density of 3.50 g/cm³, thereby creating durability and good load-bearing capacity.

Hột xoàn has a cubic structure

Hardness

Hột xoàn has a hardness of 10 on the Mohs hardness scale for minerals. Thanks to this property, diamond can withstand pressures up to 175 - 250 gigapascals according to various tests. This is also the explanation for the name “kim cương” - “indomitable” in Greek.

Brittleness

In contrast to its high hardness, the brittleness of hột xoàn is only at a fairly average to good level. Unlike hardness, which only resists scratches, brittleness reflects a material’s resistance to breaking. 

Diamond has low brittleness partly because its crystal structure cannot withstand strong impact forces. Therefore, the story of testing diamonds with a hammer is just a myth and has no scientific basis.

Color

Hột xoàn not only possesses sparkling beauty but also attracts the eye with its diversity of colors: from colorless, blue, green, orange, red, purple, pink, yellow, brown to mysterious black.

Hột xoàn color originates from tiny impurities that slip into the crystal structure. When one carbon atom in the crystal lattice is replaced by another element, such as nitrogen (causing yellow color), hột xoàn will take on the corresponding shade. 

The fewer the impurities, the purer white the hột xoàn becomes. Based on the GIA color grading scale, hột xoàn is ranked from D (colorless) to Z (deepest color).

Diamond color grade is classified from D to Z

Where is hột xoàn formed?

Hột xoàn is formed deep inside the Earth, where very high temperature and pressure force carbon-containing minerals to crystallize into sparkling gemstones. The “ideal” conditions for diamond formation usually occur at a depth of about 150 km (90 miles) beneath continents with a pressure of 5 gigapascals and a temperature of 1200°C (2200°F).

In the ocean, the process of diamond formation can be deeper due to the influence of pressure and temperature. Under the effect of time, as pressure and temperature gradually decrease, they help nourish the diamond so it can develop and grow larger.

Hột xoàn is formed deep underground

Chemical properties of hột xoàn

Hột xoàn has the chemical formula C, composed of tightly bonded carbon atoms. Thanks to this structure, hột xoàn has very high chemical durability and is not affected by acids or common chemicals.

However, if burned in an oxygen-rich environment, hột xoàn can begin to decompose at a temperature of about 800°C. Under natural conditions, after billions of years, hột xoàn can also gradually transform into graphite, another form of carbon.

In terms of electrical conductivity, most hột xoàn is an insulator, but some rare types (such as blue diamonds containing Boron impurities) can conduct electricity. In contrast, hột xoàn has excellent thermal conductivity, far superior to many other materials thanks to its stable crystal structure.

Applications of hột xoàn in jewelry making

When set on jewelry, hột xoàn becomes a unique highlight, attracting every gaze and affirming the owner’s refined aesthetic taste. Let’s take a look at some jewelry creations featuring hột xoàn below!

Engagement ring with hột xoàn

The engagement ring set with diamonds on the finger of the woman you love is not only a piece of jewelry that enhances beauty, but also a symbol of eternal love, appreciation, and commitment. The brilliant light from hột xoàn attracts every gaze, making the wearer stand out and shine anytime, anywhere.

18k hột xoàn engagement ring VNF2021092286 symbolizes eternal bonding

Couple wedding rings with hột xoàn

A wedding is a major event, marking the beginning of a new journey for two hearts beating as one. In that sacred moment, the wedding ring is not only a promise of eternal love but also a symbol of the bond and commitment the two people have for each other.

Wedding rings with hột xoàn help the bride and groom stand out more on their big day. In addition, that diamond ring is also proof of passionate love, a promise of a happy and fulfilling future together.

Couple wedding rings with hột xoàn NC2022113004 mark the couple’s important event

Earrings with hột xoàn

Women’s earrings, a small accessory but with extremely special appeal, are a delicate highlight that enhances feminine beauty. Owning earrings with hột xoàn helps accentuate graceful facial features, making the face brighter and more elegant.

Earrings with hột xoàn ERA00121 carry an extremely special appeal

Necklace with hột xoàn

A necklace with hột xoàn is a popular piece of jewelry thanks to its luxurious, noble, and classy beauty. Many people choose to wear a hột xoàn necklace on important occasions such as weddings, galas, or other important events to express their style and class.

Necklace with hột xoàn 01131MD, luxurious and classy

How are hột xoàn and kim cương different?

Many people often confuse hột xoàn and kim cương or think they are two different types of gemstones. Diamonds are divided into processed diamonds and rough diamonds. 

In fact, hột xoàn and polished, cut diamonds are the same. However, hột xoàn and rough diamonds still differ in condition and purpose of use, specifically as follows:

This is exactly the difference between them, so we can say that hột xoàn is diamond, but diamond is not necessarily hột xoàn.

Where to buy reputable hột xoàn?

Hột xoàn is an expensive piece of jewelry with high aesthetic and symbolic value. Therefore, choosing a reputable store to buy a hột xoàn ring is extremely important. Please ask the store to provide a diamond quality certificate issued by a reputable organization such as GIA or other appraisal organizations!

Reference: Latest hột xoàn prices in 2025 at Jemmia Diamond 

Jemmia Diamond is always proud to be a leading reputable diamond and hột xoàn expert in Vietnam, authorized by the American GIA institute to import and distribute genuine diamonds. Therefore, Jemmia diamonds always have clear origins, guaranteed quality, and global value. 

With the information Jemmia has shared above, you surely now know what hột xoàn is, right? Visit the nearest Jemmia Diamond branch now for detailed consultation and to own the hột xoàn jewelry piece that suits you best!

Discover now the latest diamond jewelry designs from Jemmia diamond experts – a place that honors your classy beauty and unique style: