In the last decade, laboratory diamonds have transformed the global jewelry industry landscape. Thanks to technological advances and increased social and environmental sensitivity, their market presence has grown exponentially. According to a report by Bain & Company (2023), synthetic diamonds accounted for approximately 18% of the total volume of diamonds sold in fine jewelry worldwide, a figure that is growing steadily.
This growth raises key questions, especially for those who see fine jewelry not only as an aesthetic expression, but also as a way to preserve value: are lab-grown diamonds a reliable investment? How do they perform compared to natural diamonds? In this analysis we explore their evolution, their advantages and their limitations from an expert perspective.
What are laboratory diamonds and why are they on the rise?
Laboratory diamonds are real gems, created under controlled conditions using advanced technologies such as HPHT (High Pressure High Temperature) or CVD (Chemical Vapor Deposition). These are processes that replicate the natural formation of diamonds on Earth, resulting in a stone with the same optical, physical and chemical properties as a natural diamond.
Their rise is due to several factors: greater quality control, more accessible prices and a perception of lower environmental impact. Today’s consumers also increasingly value traceability and transparency, aspects that lab-grown diamonds can easily provide.
Sustainability, ethics and emotional value
One of the most common arguments in favor of synthetic diamonds is their smaller ecological footprint compared to natural diamonds. Because they are lab-created, the use of natural resources such as water and energy, as well as CO₂ emissions associated with mining, are significantly reduced. The risks of linkage to unethical labor practices or conflict zones are also minimized.
However, it is important to note that responsible mining of natural diamonds has evolved significantly. Today there are strict international controls and certifications that guarantee sustainable extraction, respectful of the environment and local communities.
Market performance: how do they compare?
From a strictly financial point of view, the reality is that laboratory diamonds have not yet proven to be a sound long-term investment. Although their initial price is lower than that of an equivalent natural diamond, which may be attractive to those who prioritize design and size, their value tends to depreciate rapidly after purchase.
This loss in value is related to one key factor: supply. Unlike natural diamonds, whose availability is limited by geology and the rate of mining, laboratory diamonds can be produced in large volumes and with increasing speed, which directly affects their performance on the secondary market.
On the other hand, natural diamonds, especially those with exceptional characteristics (large size, purity or unusual color), are in constant demand, both in jewelry and among collectors. Their scarcity, together with their history and unrepeatable nature, gives them a heritage value that can hardly be matched by laboratory-grown diamonds.
When should you choose laboratory diamonds?
The choice of a diamond must respond to both rational and emotional criteria. Laboratory diamonds are an excellent choice when prioritizing aesthetics, technological innovation and environmental commitment. They are ideal for everyday jewelry or for those who want a contemporary design without compromising visual quality.
However, if the objective is to preserve the value of the jewel in the long term, or if it is a heritage purchase – such as a wedding ring, a collector’s item or a family heirloom – natural, certified and responsibly sourced diamonds remain the best choice.
The expert view: what is their long-term value?
From the point of view of Setdart’s jewelry specialists and according to the opinion of various luxury market analysts, synthetic diamonds should not be considered as financial assets with long-term projection. Although they represent an aesthetic, ethical and technological option on the rise, their current market performance is more akin to that of a consumer product than that of a heritage asset.
Their ability to appreciate in value is limited by several factors: unlimited production, declining manufacturing costs and a growing supply that reduces scarcity, an essential component of gemstone investment.
In contrast, certified natural diamonds, especially those of high quality or with rare characteristics (such as fancy color, exceptional sizes or historical provenance), continue to be preferred by collectors and investors. Their geological scarcity, coupled with traceability and growing international demand, positions them as one of the most stable jewelry categories in terms of conservation and potential increase in value over time.
In our experience in auctions and high-end jewelry, pieces with natural diamonds of excellence maintain not only their aesthetic and symbolic appeal, but also their relevance as an investment object.
Make an informed choice
In a rapidly evolving market, the key is to make informed decisions. Synthetic diamonds have opened up new possibilities for contemporary jewelry, but they are far from displacing the historical, symbolic and economic value of natural diamonds.
Both options are valid. The important thing is that the choice reflects your values, your style and your expectations. If you want to know the key criteria for valuing a diamond, check out our guide to the 4Cs, an essential tool for both natural and laboratory diamonds.
To delve deeper into the symbolic and emotional value of these gems, you can read the article Diamonds are forever, where we explore their legacy and cultural impact.
