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HPHT vs CVD Diamonds: Decoding the Difference for Smart Shoppers

by Luis Navarro
Last updated on September 6, 2023
necklace for girlfriend

In the world of fine jewelry, lab grown diamonds have become increasingly popular. They are a stunning and ethical alternative to mined diamonds. As interest in these conflict-free gems continues to grow, buyers are asking: What’s the difference between HPHT and CVD diamonds? In this blog post, we’ll explore the distinctions between the two most common methods for creating lab diamonds. We will examine the growth processes of HPHT (high pressure, high temperature) and CVD (chemical vapor deposition) diamonds, outline the advantages of each method, and deliberate on factors for selecting between the two. Whether you’re searching for a show-stopping center stone or delicate accent diamonds, understanding HPHT vs CVD will ensure you select the ideal lab diamond to reflect your s

Unveiling the Basics of Lab Grown Diamonds

model in a sundress holding flowers while wearing two lab grown diamond rings and a diamond tennis bracelet

Lab grown diamonds have become popular due to their visual appeal and unique origin story. These diamonds are produced in labs using advanced technology that imitates how diamonds form naturally. Scientists are able to replicate the extreme heat and pressure found deep within the Earth’s crust. This results in diamonds that are chemically, physically, and optically identical to natural diamonds. In other words, lab grown diamonds are real diamonds.

Unlike traditional mining, lab grown diamonds require fewer resources, resulting in a smaller carbon footprint. Moreover, traditional diamond mining causes concerns about labor practices and human rights violations. Lab grown diamonds, on the other hand, are cultivated in controlled environments, eliminating the potential for unethical practices.

Lab grown diamonds are also more cost-effective than mined diamonds as they do not require expensive mining and transportation processes. This affordability allows diamond enthusiasts to opt for larger carat sizes or invest in intricate designs previously out of their reach.

To better understand the lab grown diamond industry, it’s important to know the two primary methods used to create these stunning gems – High-Pressure High-Temperature (HPHT) and Chemical Vapor Deposition (CVD).

The HPHT Diamond Journey

close up shot of a models hand wearing two lab grown diamond rings

What is HPHT?

The HPHT process draws inspiration from the natural forces that shape diamonds in the Earth’s mantle. Immense pressure and heat cause carbon atoms to arrange themselves into the crystal lattice structure that defines diamonds. he HPHT process applies intense pressure and high temperatures to a small diamond seed, frequently a tiny fragment of a natural diamond, reproducing the same journey. Under these conditions, the carbon atoms within the seed align and grow, layer by layer, eventually forming a complete diamond.

HPHT lab grown diamonds may seem like a futuristic concept, but the HPHT process has been around the diamond industry for decades. In the mid-20th century, scientists started experimenting with HPHT to produce gem quality HPHT diamonds in a controlled laboratory setting. Over time, advancements in technology and scientific understanding have refined the process, resulting in the production of high-quality and authentic HPHT diamonds. Today, these diamonds not only emulate natural diamonds but also provide a cost-effective and ethical alternative rich in history and innovation.

Characteristics of HPHT Diamonds

HPHT diamonds exhibit exceptional color brilliance, which is one of their defining features. These diamonds frequently exhibit a stunning white appearance comparable to the top-tier color grades of mined diamonds. The controlled growth process used in creating HPHT diamonds allows for precise manipulation of color, resulting in stones that emit a captivating luminosity.

Additionally, HPHT diamonds have exceptional clarity due to the controlled conditions under which they are grown. This process minimizes internal flaws, more commonly referred to as inclusions. As a result, these diamonds have fewer imperfections that can sometimes detract from their stunning beauty.

The CVD Diamond Experience

model in a white dress wearing two diamond rings and a diamond tennis bracelet

Understanding CVD

Chemical Vapor Deposition (CVD) is an advanced technique that involves growing diamond crystals from a carbon gas mixture. Unlike the High-Pressure High-Temperature (HPHT) process, CVD uses a chemical reaction to deposit carbon atoms onto a diamond seed or substrate, causing them to form a diamond lattice structure over time. This method is preferred as it does not require the extreme pressure used in the HPHT process and provides more control over the diamond growth process.

Scientists can adjust the composition of gas mixture and deposition conditions to carefully influence the resulting diamond’s growth rate, size, and color. This precision enables them to create diamonds with specific attributes, catering to a wide range of preferences and requirements.

Characteristics of CVD Diamonds

CVD lab grown diamonds are well-known for their exceptional clarity. The controlled growth process guarantees minimal inclusions, which results in diamonds that possess remarkable transparency and brilliance. This clarity gives CVD diamonds an exquisite radiance, enabling them to reflect and refract light in a way reminiscent of their mined counterparts.

In terms of color, CVD diamonds showcase a diverse spectrum. While some may exhibit a classic white hue, others can display shades of yellow, brown, or even striking fancy colors. The ability to produce colored diamonds through the CVD process opens up a world of possibilities for unique and personalized jewelry pieces.

Making the Right Choice for You

model posing with a lab grown diamond ring

When it comes to finding the perfect lab grown diamond, it’s essential to know your preferences, values, and priorities. Choosing between CVD and HPHT diamonds requires more than just understanding the technical details. It’s about finding a gem that aligns with your story and aspirations. Many individuals like you have embarked on this path, seeking a gem that tells their unique story. Let’s explore how other people have navigated the choice between HPHT and CVD diamonds, drawing from their experiences to shed light on this decision-making process.

Discovering the Right Fit: A Personal Journey

Meet Sarah, a jewelry enthusiast captivated by the idea of owning a lab grown diamond that aligned with her values. She found herself torn between the allure of HPHT diamonds and the customization possibilities of CVD gems. Sarah’s decision was influenced by her love for vintage aesthetics, which led her to choose an HPHT diamond with a classic white hue. Her experience highlights how personal style can be crucial in determining the right diamond type.

Sustainability and Sentiment: A Love Story

David and Emily, a couple deeply committed to sustainability, embarked on the journey to find an engagement ring that reflected their values. Their commitment to eco-conscious living influenced their choice between HPHT vs CVD diamonds. Ultimately, they selected a stunning CVD diamond in a unique, fancy color, symbolizing their love for each other and the environment. Their story showcases how ethical considerations can shape the choice of diamond and add sentimental value to the piece.

Empowering Your Decision

These real stories illustrate that the choice between HPHT vs CVD diamonds is more than a technical decision – it’s a personal journey that reflects your values, style, and aspirations. Just as Sarah, David, and Emily found their perfect diamonds, you too can draw inspiration from their experiences to confidently select the diamond that resonates with your narrative.


model laying down on the grass wearing a lab grown diamond necklace

Lab grown diamonds provide an ethical and cost-effective alternative to mined diamonds. When choosing between HPHT vs CVD diamonds, it’s important to consider their differences. HPHT diamonds replicate natural conditions, providing both brilliance and quality, while CVD diamonds use precise chemistry for custom designs. Each type has its benefits and considerations, from historical significance to controlled growth. The diamond you end up choosing will become a reflection of you – a symbol of your values, aesthetics, and innovation.

Shop for Lab Diamonds at Clean Origin

clean origin store

At Clean Origin, our mission is to empower you with the knowledge and resources you need to make a decision that brings you joy and satisfaction. 

We offer a vast collection of CVD diamonds to ensure you have a wide range of choices to explore, each with its unique charm. To help you in your diamond exploration journey, we invite you to schedule a virtual appointment with one of our team members or visit one of our showrooms in a city near you today!