Moissanite vs Diamond: Understanding the Differences and Market Trends

What is Moissanite?

Moissanite is not a diamond but a diamond simulant. It is a lab-created silicon carbide (SiC) material, also known as moissanite stone. The name originates from a French chemist, Henri Moissan, who first discovered this sparkling material in a meteorite in 1893. To honour his discovery, the mineral was named moissanite in 1905.

Henri Moissan's contributions to science go beyond this discovery; his work on fluorine and the invention of the electric furnace earned him the Nobel Prize in Chemistry in 1906. While natural moissanite is extremely rare, synthetic moissanite has become a popular choice in jewellery due to its remarkable optical properties and affordability.

Moissanite’s Properties vs Diamonds

Moissanite shares several visual characteristics with diamonds, making it an excellent alternative. However, some key differences set them apart:

1. Refractive Index and Dispersion
   Moissanite has a higher refractive index (2.65–2.69) and dispersion value (0.104) than diamonds, meaning it sparkles more vividly and displays more fire (coloured flashes of light).

2. Hardness
   On the Mohs scale, moissanite rates at 9.25, making it nearly as hard as a diamond (10). This makes moissanite durable enough for everyday wear.

3. Price
   Moissanite is significantly more affordable than diamonds, offering a cost-effective solution for those seeking brilliance without the hefty price tag.

4. Eco-Friendliness
   Moissanite is lab-created, eliminating the environmental and ethical concerns associated with diamond mining.
   

The History of Synthetic Moissanite

Synthetic moissanite was first created in 1996 by the U.S.-based company C3, which held exclusive patent rights. Its close resemblance to diamonds, combined with its lower cost, made it an attractive alternative.

By 2016, when the C3 patent expired, many countries began producing moissanite, leading to its rapid growth in the global jewellery market. Clever advertising campaigns, such as "With moissanite, there’s no need for South African diamonds," have further boosted its popularity.

Moissanite in Today’s Jewellery Market

Moissanite has become a sought-after option for engagement rings, earrings, and other fine jewellery. Consumers value its affordability, dazzling brilliance, and ethical production.

Key trends include:

• Custom Engagement Rings: Moissanite stones are increasingly used in bespoke ring designs due to their flexibility in size, shape, and setting.
• Sustainability Focus: As consumers prioritise eco-friendly options, moissanite’s ethical appeal strengthens its position in the market.
• Global Expansion: With manufacturing now widespread, moissanite is more accessible than ever.
  

How to Differentiate Moissanite from Diamonds

While moissanite is visually similar to diamonds, they can be distinguished using:

• Thermal Conductivity Testing: Diamonds and moissanite both conduct heat, but specialized testers can differentiate between them.
• Double Refraction: Moissanite exhibits double refraction under magnification, creating a "double vision" effect on its facets.
• Professional Grading: Certified gemologists can provide expert evaluations to identify the stone.
  

Why Choose Moissanite?

Moissanite offers a stunning, ethical, and budget-friendly alternative to traditional diamonds. Whether you are looking for a dazzling centrepiece for an engagement ring or a sustainable jewellery option, moissanite delivers brilliance and durability without compromise.