To decide a pearl’s worth, there are five commonly known factors which can help jewelers: shape, luster, colour, size and surface blemishing. Only finest quality pearls having highest ratings in each of these factors can carry the name of Mikimoto.
Following are the special factors of Mikimoto pearls
This can be seen very easily with our naked eye. Generally, pearls that are perfectly round in shape are quite rare.
However, few pearls may still enjoy their uniqueness like for e.g. baroque pearls, that are often off-round, asymmetrical in shape as well as drop. These pearls are graded as per their symmetry.
Luster can be measured based on the rate of reflection of pearl’s surface and amount of light that gets reflected. As precious gemstone, luster will make or break pearls. Any pearl without having brilliant luster may end up as painted beads.
The point is, brighter, sharper and also more reflective the pearl is; its value will be more.
Colours can be from cream, grey and pink to black, blue and green. Pink and white are among most popular Mikimoto colours, while gold and peacock green are among rarest south sea colours.
While colour choice can be just a personal preference, but prefer rich color, that is evenly distributed over the pearl.
Size generally ranges from 3-10mm. Cultured pearls starts at 8mm and can be 18mm too. Most of the cultured pearls are between 6 to 10mm in size. Larger than 10mm pearls can typically be found in wild, but may not be as lustrous, colourful or round like cultured pearls.
Pearls with clean surface will be valued but you must note that pearl is a natural product and hence some blemish will always be there even if you cannot see with naked eye.
Bonus factor: matching
How well your pearls are matched with the necklace strand or pair of earrings is an important factor. In case of Mikimoto pearls, matching should be near perfect. South Sea pearls can often feature in graduated strands or showcase multiple colours, as it can be much more difficult getting an identical gem.