Touch and feel the temperature
Real pearls are cold to touch for the first couple of seconds before warming up against your skin.
Fake plastic pearls have the same temperature as the room temperature and you don’t feel the coolness when you touch them. However, fake ones that are made of glass beads can be cool to touch to start with. But it tends to take them longer to warm up against your skin than real pearls.
Look for tiny irregularities
Real pearls are only rarely "perfect". Usually, they'll have small blemishes or irregularities in their shape. In a real pearls, you can always see very tiny differences between them, even when they are top quality and well matched.
If the pearls are completely perfect and identical in terms of shape, size, colour and surface characteristics, they are probably fake.
Examine the colour
Most real pearls are rarely round. In general, round pearls command a higher price than pearls of other shapes. But even with a strand of real pearl necklace that is perfectly round, you can still see some slight differences in their pearl shapes.
So whatever the pearl shape, if you find them completely identical, it’s probably a sign that they’re made by machines.
(Luxury pearls suggested to test in gemmological laboratory)
Check drill holes
In imitation pearls, you can often see flakes or chipped coating around the drill holes that will eventually peel off.
At Pearl Lustre, we DO NOT sell imitation or fake pearls. All of our pearls are either freshwater or saltwater cultured pearls from environmentally sustainable farms around the world.