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12:08 CH - Thứ Năm | 13/03/2026

Why Choose High-Standard Diamonds?

Key Takeaways

  • In the diamond industry, size is not the factor that determines the value of a stone. In fact, two diamonds of the same weight can differ greatly in value if they vary...

In the diamond industry, size is not the factor that determines the value of a stone. In fact, two diamonds of the same weight can differ greatly in value if they vary in cut, clarity, color, and other optical characteristics.

The difference between a high-standard diamond and a low-standard diamond is not only in the selling price, but also directly affects: brilliance, durability, asset value, and future liquidity.

Therefore, when choosing a diamond, quality standards must be prioritized. So what truly makes a high-standard diamond different from an ordinary diamond, and why is this factor so important? Let Jemmia Diamond explore it through the article below.

What is a high-standard diamond?

High-standard diamonds are those that achieve high quality grades in the 4Cs grading system of the Gemological Institute of America (GIA), while also having crystal structure, cut proportions, and inclusion characteristics that do not affect the stone’s light performance and durability.

In practice, a diamond is often considered to belong to the high-quality group when it simultaneously meets the following standards:

  • Color: from I color and above.
  • Clarity: from VS2 and above.
  • Cut: Triple Excellent, including Excellent Cut, Excellent Symmetry and Excellent Polish.
  • Fluorescence: from None to Medium.

Besides the 4Cs criteria, evaluating a high-quality diamond also considers the Key to Symbols factor in the GIA grading report to determine the nature and position of internal inclusions. High-standard diamonds typically do not have large or concentrated features such as:

  • Indented Natural: A natural indentation on the diamond surface
  • Cavity: A small hole on the surface, appearing when an internal crystal in the diamond falls out or separates during the cutting and polishing process.
  • Chip: A small nick on the surface, usually appearing on the edge of the diamond.
  • Twinning Wisp: A type of internal inclusion, in the form of a faint small white line, often extending through the diamond.
  • Bearding: Fractures spreading along the girdle edge of the diamond into the inside of the stone.

When these characteristics appear in large sizes or are located in easily visible positions, they often cause the diamond to no longer be classified as high quality, even if the 4Cs parameters may still be at a good level.

Therefore, in the diamond industry, the concept of a “high-standard diamond” is not based on a single indicator but on the simultaneous combination of many quality factors, from the 4Cs to the internal inclusion structure of the stone. Diamonds that meet these criteria usually possess optimal light performance, high durability, and more stable market value.

Many premium diamond brands on the market apply a stricter selection process, deeply screening cut, clarity, crystal structure, and factors affecting light reflection, durability, as well as the long-term value of the diamond.

Kim cương tiêu chuẩn cao là gì

A high-standard diamond is a diamond that achieves superior quality in the 4Cs

Why should you buy a high-standard diamond?

1. Brilliant beauty that endures over time

High-standard diamonds often possess high color grades, good clarity, and few inclusions that affect the crystal structure. These factors help the diamond maximize its ability to disperse and reflect light, creating the characteristic brilliance, fire, and scintillation.

In addition, diamonds that meet high standards often do not have large inclusions or flaws that may affect the durability and structure of the stone. Thanks to this, the diamond can maintain its radiant beauty through many years of use without losing its aesthetic value.

Viên kim cương chất lượng cao đảm bảo khả năng phản xạ ánh sáng vượt trội

A high-quality diamond offers brilliant beauty that endures over time

2. Natural rarity

In the diamond industry, rarity is an important factor that determines value. A high-standard diamond is not only rare because it is a natural diamond, but also because it must simultaneously achieve high color, good clarity, and stable crystal structure.

During the crystallization process that lasts billions of years deep within the earth, the presence of nitrogen or other impurities can alter a diamond’s color and transparency. Therefore, diamonds that are nearly colorless and have few inclusions occur at a very low rate in nature, making them especially rare and highly valuable.

3. High market liquidity

High-standard diamonds often have good liquidity thanks to their clearly defined quality and international market recognition. Diamonds with GIA certificates, transparent 4Cs parameters, and clear origin can be easily valued and traded globally.

In addition, as the supply of natural diamonds becomes increasingly limited, diamonds with beautiful color, high clarity, and good cut are always sought after by the market. In some cases, especially rare diamonds may even increase in value over time.

Viên kim cương chất lượng cao có khả năng giữ giá trị và tính thanh khoản tốt trên thị trường quốc tế

A high-quality diamond can retain its value and maintain good liquidity in the international market

4. Sustainable value and heirloom potential

More than just a piece of jewelry, a high-standard diamond is also regarded as an asset with sustainable value over time. With nearly absolute durability and timeless beauty, a diamond can be preserved through generations as a family keepsake.

That is why many people choose high-standard diamonds to mark important milestones in life, while also viewing them as an asset that can be passed down to future generations.

Thành tựu xứng đáng được ghi dấu bằng kim cương tiêu chuẩn cao

High-standard diamonds are chosen to mark important milestones in life

The risks of buying a low-standard diamond

Many first-time diamond buyers are often attracted by the lower price. However, diamonds that do not meet quality standards may carry many risks related to the stone’s beauty, durability, and long-term value, such as:

  • Value drops immediately after purchase: Diamonds with low color grade, poor clarity, or non-optimal cut are often not highly valued by the market, leading to a strong loss in value compared to diamonds that meet high standards, sometimes differing by as much as 30–50% of the value.

  • Low liquidity: When a diamond does not meet high standards in Color, Clarity, Cut, and features in Key to Symbols, its rarity in the market decreases, making future valuation and resale more difficult.

  • Unsustainable aesthetic value and durability: Inclusions or a non-optimal cut can reduce the diamond’s transparency, fire, and brilliance, and in some cases may also affect the structure and durability of the stone over time.

Những rủi ro khi mua kim cương tiêu chuẩn thấp

Therefore, choosing a diamond is not only about choosing the size, but about choosing the right standards. Because it is the standards of color, clarity, cut, and Key to Symbols that determine whether that diamond is merely a piece of jewelry, or truly an asset that can retain long-term value.

Why does Jemmia Diamond select only 2% of high-quality diamonds?

In reality, only a small percentage of diamonds fully meet the criteria for cut, color, clarity, and crystal structure. Jemmia Diamond applies a strict selection process according to international standards, in which only about 2% of the highest-quality diamonds are selected for distribution. 

Jemmia’s premium natural GIA diamond selection standards:

StandardGIA diamonds over 3.6lyMelee diamonds 
ColorFrom I color and above From H color and above 
FlorescenceFrom None to Medium From None to Medium 
Cut Triple Excellent Cut (Ex Cut, Ex Symmetry, Ex Polish)Very Good and above 
Clarity From VS2 and above From VS2 and above

Jemmia diamonds specifically do not contain flaws that affect the durability, natural structure, and value of the diamond (Indented natural, Chip, Cavity, Twinning Wisp, Bearding). 

At Jemmia Diamond, quality standards are further reinforced by transparency of origin, a modern grading system, and professional advisory expertise.

  • Transparent origin and full legal documentation: Every diamond at Jemmia comes with a GIA certificate, import invoice, and ownership contract, ensuring clear origin and transparent legal value.
  • GIA-standard grading system: Jemmia is a pioneer in equipping grading devices such as GIA ID100, GIA Match iD, and Diamond Dock, helping accurately verify the characteristics and natural origin of each diamond.
  • International standards combined with refined Vietnamese design: Diamonds meeting international standards are crafted with exquisite jewelry-making techniques, honoring the beauty and aesthetic value of high-end jewelry.
  • Transparency in professional consultation: Each diamond is clearly explained in terms of 4Cs, standards, and value, helping customers understand exactly what they own.

Thanks to the strict selection and grading process, diamonds that meet high standards not only offer superior brilliance, but also ensure stable asset value, transparency, and market tradability.

Therefore, when choosing a diamond, priority should be given from the outset to those that meet high quality standards to ensure long-term value.

📞 Contact 0838 353 333  or Zalo Jemmia Diamond now to receive advice from diamond experts on the product that suits your needs and budget. 

Nhung Hoang

Author: Nhung Hoang

Content Writer Specialist

Nhung Hoang là Content Writer Specialist với hơn 3 năm kinh nghiệm nghiên cứu và phát triển nội dung về kim cương tự nhiên và ngành trang sức. Với nền tảng kiến thức được đào tạo trực tiếp bởi Giám đốc hoạch định GIA của Jemmia Diamond, Nhung Hoang tập trung xây dựng các bài viết chuyên sâu về kim cương GIA, trang sức kim cương và xu hướng trang sức, nhằm mang đến những thông tin chính xác và đáng tin cậy cho người đọc.

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