Lab created gemstones and synthetic gemstones are terms that are often used interchangeably in the jewelry industry, and they refer to gemstones that are produced in a laboratory rather than mined from the Earth. While they may be identical to natural gemstones in terms of their physical, chemical, and optical properties, the process through which they are created is entirely man-made. Simulated gemstones, on the other hand, are a different category altogether. Below we will discuss the difference.

Lab Created and Synthetic Gemstones

Lab-created and synthetic are terms used to describe gemstones that have been manufactured in a laboratory setting. These gemstones are chemically, physically, and optically identical to their natural counterpart, but are created using artificial methods. Two primary methods are used to create many synthetic gemstones are:

  1. Verneuil Process (Flame Fusion): This is one of the oldest and most common methods for creating synthetic sapphires. In this process, fine alumina powder (aluminum oxide) is melted in a flame, and the molten droplets form a boule or mass of synthetic sapphire as they cool and solidify. The boule is then cut into gemstone shapes. The Verneuil Process is relatively inexpensive, but the resulting sapphires may contain some telltale signs, such as curved growth lines, that reveal their synthetic origin.
  2. Czochralski Process (Crystal Pulling): This method involves melting a mixture of alumina powder in a crucible and then pulling a seed crystal from the melt, allowing it to cool and crystallize into a larger boule. The Czochralski Process allows for more control over the crystal’s growth, resulting in higher-quality synthetic gemstones.

Simulated Gemstones

Simulated gemstones, in contrast, only imitate the appearance of a natural gemstone but do not share the same chemical, physical, or optical properties. They are often made from materials like cubic zirconia, glass, or other crystal compounds that are engineered to resemble a particular gemstone.

For example, cubic zirconia is a popular diamond simulant. While it may look similar to a diamond to the untrained eye, its composition, hardness, and brilliance are different. Simulated gemstones are typically much more affordable than both natural and synthetic counterparts, but they may not have the same durability or value.


While lab-created and synthetic gemstones are synonymous, representing gemstones created in a laboratory with the same inherent properties as their natural counterparts, simulated gemstones are a separate category. Simulated gemstones merely mimic the appearance of natural stones without replicating their unique characteristics.

Understanding these differences is essential for consumers, jewelers, and gemologists alike, as it impacts the value, durability, and ethical considerations of the gemstones. Whether choosing a lab-created, synthetic, or simulated gemstone, understanding what each term means can help in making an informed decision that aligns with individual preferences, values, and budget.

Transparency and Trust

Disclosing whether a gemstone is lab-created or simulated is a critical aspect of ethical business practices in the jewelry industry, and it has several important implications for both sellers and consumers.

  1. Consumer Trust: Transparency in labeling and accurately describing a gemstone’s origin builds trust between the seller and the consumer. Misrepresenting or failing to disclose the nature of a gemstone can lead to mistrust and damage a seller’s reputation.
  2. Informed Decisions: Consumers have the right to know what they are purchasing. By clearly stating whether a gemstone is lab-created or simulated, consumers can make informed decisions based on their preferences, values, and budget. Some may prefer lab-created stones for ethical reasons, while others may prioritize natural stones for their rarity and intrinsic value.
  3. Value Considerations: Lab-created, natural, and simulated gemstones can vary significantly in price. A lab-created sapphire, for example, may be less expensive than a natural one, while a simulated sapphire may be even more affordable. Accurate disclosure ensures that consumers understand what they are paying for and why.
  4. Legal Compliance: In many jurisdictions, laws and regulations require the clear disclosure of a gemstone’s origin and treatment. Failure to comply with these regulations can lead to legal consequences for the seller.
  5. Ethical Considerations: Ethical business practices extend to all aspects of a transaction, including the accurate representation of products. By being transparent about the nature of a gemstone, sellers align themselves with principles of honesty and integrity.

The clear disclosure of whether a gemstone is lab-created or simulated is not merely a matter of business etiquette; it’s a fundamental aspect of ethical selling and consumer protection. It fosters a transparent relationship between buyer and seller, enables informed purchasing decisions, and ensures compliance with legal standards. In an industry where the intrinsic value, beauty, and authenticity of gemstones are paramount, honesty in labeling is essential for maintaining integrity and trust in not only your business but the industry as a whole.

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