To be clear, the Moissanite is not a diamond imposter, it is in fact a very rare gemstone that rivals the diamond due to its refractive and hardness qualities.
Moissanite share a lot of optical similarities to the diamond although they are chemically and compositionally different. In fact, Moissanite have a higher refractive index than diamonds do (more sparkle).
In addition to this is the hardness of the Moissanite stone.
On this scale diamonds are a 10 and a Moissanite is a 9.5-9.25. Followed by the Ruby (9), Sapphire (9), Emerald (7.5).
This ranking makes Moissanite the seconds hardest natural stone known to man.
Moissanite are incredibly strong and never change colour or lose their sparkle. They are also completely traceable, conflict-free and eco-friendly.
The Prestwick stones are so pure and so white that they exceed that of any other gem or diamond.
Our stones are unfailingly pure, colourless and in the premium D-E-F range, with extreme hardness.
In general, jewellery and diamonds do have incredibly high mark-ups but these mark-ups were due in part to jewellery being hand-made. Traditionally, it was one in-house jeweller creating everything for a brand; cutting stones, setting pave, etc.
Sadly, today we see companies outsource to places like China, or purchasing mass-produced styles and using CAD's—all the while marking up the price multiple times without increasing or inputting any truly skilful craft to the pieces.
As far as the mined diamond themselves, even with the guarantee of a GIA certificate, 100% traceability of naturally occuring diamonds is seemingly impossible. Diamond mines claim thousands of lives each day and it is likely that each natural diamond on today's market has some of 'conflict' associated to it.
The Prestwick stones are artfully crafted in a laboratory from silicon carbide, one of the hardest minerals in the world, and are guaranteed to last a lifetime.