Precious Metals Tswane specialise in providing high-quality Moissanite stones to the trade. With their exceptional brilliance and fire, our Moissanite are perfect for jewellery designers and retailers seeking a stunning alternative to traditional diamonds. Each Moissanite gemstone in our collection is crafted with meticulous attention to detail, ensuring superior quality and unparalleled beauty. Experience the radiance and affordability of Moissanite as you explore our extensive selection of stones. Our dedicated team at PMT is here to assist you in finding the perfect Moissanite gemstone to elevate your jewellery creations. Trust PMT for exquisite Moissanites that will captivate your customers and make a lasting impression.

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Buying Moissanite

Contact Us to buy your moissanite, diamonds, and other precious stones. Once we have received payment, we will arrange secure courier delivery to you within 24 hours.

Moissanite Sizes

View a chart of our moissanite sizes by size in millimetres for round, princess, cushion, oval, emerald, marquise, and cushion cut moissanite.
Diamond Size Chart


Moissanite is a rare and naturally occurring mineral composed of silicon carbide. However, most moissanite used in jewelry today is lab-created, replicating the brilliance and fire of natural moissanite at a more affordable price.

Moissanite closely resembles diamonds in appearance, often mistaken for them due to their similar brilliance and sparkle. While both gemstones are durable, moissanite ranks slightly lower on the hardness scale than diamonds, making diamonds slightly more resistant to scratches.

Yes, moissanites are considered an ethical and sustainable choice for jewelry. Lab-created moissanites eliminate the need for mining, reducing environmental impact and ensuring ethical sourcing.

Moissanites exhibit exceptional brilliance, outshining many diamonds due to their higher refractive index. This means they disperse light more effectively, resulting in vibrant flashes of color, often referred to as “fire.”

In most cases, it’s challenging to distinguish moissanite from diamonds without specialized equipment. Both gemstones share a similar appearance and are virtually indistinguishable to the naked eye.


Moissanite is a dazzling gemstone, composed of silicon carbide, renowned for its brilliance, durability, and affordability. An ethical choice, it’s a stunning alternative to traditional diamonds.


Many people confuse cut with the shape (e.g. round or princess) of a diamond. The shape of the diamond is a matter of personal preference and does not directly affect the value. Cut refers to how well the stone is faceted, proportioned, and polished. A good cut will result in better brilliance, which is why it is the most important of the 4Cs. If a diamond is poorly cut, the diamond will look dull and glassy. It is the work of a master cutter that allows the diamond to be cut in such a way as to permit the maximum amount of light to be reflected through the diamond. The cut is the only diamond component not influenced by nature.


Colour is the second most important factor to consider when buying a diamond. Ideally, a diamond would have no colour, however, chemical impurities or structural defects do exist which affect the colour. It is important to distinguish the normal range of ‘white’ diamonds from ‘fancy’ colour diamonds. Diamonds range in colour from faint yellow or brown to rare pinks, blues, greens, and other colours are known as “fancies”.


The clarity of a diamond relates to the amount of natural internal imperfections (inclusions) and blemishes (surface defects) present. Inclusions are liquids, solids or gases trapped in the mineral as it formed. Clarity refers to the relative absence of inclusions and blemishes.


Carat refers to the actual weight of the diamond. The larger the carat, the more expensive the diamond. Carat size is divisible by 100 points of two milligrams each.