A synthetic stone is not a fake. Synthetic describes a gem made in a laboratory which has the same basic chemical composition and similar chemical, optical and physical properties to its natural counterpart.
Imitation is glass or plastic.
Synthetic diamonds were first produced in the early 1950’s for industrial use. Synthetic rubies were produced in the 19th century for the watch making industry in Switzerland.
Synthetic diamonds have essentially the same composition as natural diamonds but usually without the flaws like included minerals that come with the way diamonds are formed. Manufacturers are now deliberately putting flaws in their stones to fool the eye or a jeweller’s loupe.
There are now instruments that detect the synthetics. When placed against a natural diamond, they emit a sound but not with synthetics.
A cubic zirconia is not a synthetic diamond, it’s an imitation with a different chemical composition. It also weighs more than a diamond which is why it’s always sold by size not carat weight.
So now to eBil.
1. Buy from a reputable buyer (Ha!) in Australia so you can hunt them down and kneecap them.
2. If you do get lab diamonds, you have to make sure that they’re hand cut and polished not machine cut in a factory in China.
3. Have them appraised by someone who knows the difference between Czs and lab diamonds or a jeweller who has a beep machine because they don’t beep.
4. Don’t buy them on eBil if you’re smart.The large stone at the top is 207 carats and from Thailand, in other words, take your chances.