Like many things in life, pearls age. As these precious gems age, they go through a natural process that changes the composition of the organic substances that make them up. This causes them to change color. Yellow pearls typically indicate that pearls are real, since artificial pearls don't normally change color.
How to clean pearls that have yellowed. White pearls can yellow over time, but it is possible to brighten them up again. The acetone in nail polish remover can whiten old pearls and clean away stubborn stains.
Some of you may be concerned that if their pearls turn yellow, this indicates that they are fake. Contrary to popular belief, imitation pearls very rarely turn yellow due to their composition of plastic and ceramic. Pearls that begin to yellow indicate that they are organic and subject to change.
Perhaps the best-loved gems of all time, pearls—both natural and modern cultured pearls—occur in a wide variety of colors. The most familiar colors are white and cream (a light yellowish brown). Black, gray, and silver are also fairly common, but the palette of pearl colors extends to every hue.
Why does it happen? Pearl jewelry usually turns yellow as time passes because they dry out. If there is no air circulation and moisture where pearls are kept, their organic composition begins to change, which results in that yellowing.
Freshwater Natural Pearl Colour
Grown in lakes, ponds and rivers, freshwater pearls generally have a bodycolour of white, cream, yellow, orange, pink or purple. These subtle pastel colours are unique to the freshwater variety.
You can clean or brighten new or vintage pearls at home using a mild detergent or dish soap. If your pearls have become yellow, try whitening them or restoring their shine with acetone. Acetone will not harm pearls, but never use ammonia, vinegar, or chlorine bleach near your pearls.
Size: When other value factors are equal, larger pearls are rarer and more valuable than smaller pearls of the same type. Shape: Round is the most difficult shape to culture, making it the rarest cultured pearl shape and—if all other factors are equal—also generally the most valuable.
Pearls produced by the gold-lip South Sea pearl oyster range is colors from a creamy white to a deep gold. The varying hues in between are often referred to as yellow and champagne.
It's pretty much impossible to tell the difference between a natural and cultured pearl by just looking at its outer appearance. The only way to make absolute certain whether a pearl is natural or not is to perform an x-ray of the internal structure of the pearl.
Both natural and cultured pearls have textured surface due to their layered nacre structure. So when you rub the pearls lightly against each other or on your front teeth, they feel a little gritty. Fake or imitation pearls, however, usually feel smooth or glassy.
Genuine pearls are shinier than fake pearls. You can measure shine in luster, which is the intensity and softness of a pearl's surface, it generally has to do with how bright and clear a pearl looks. Natural pearls have more shine than artificial ones because they're made from natural materials.
It's often assumed that because something's old it must be valuable. That's rarely true and certainly not for pearls. Advances in technology and culturing techniques mean you can buy a much better set of pearls for far less money than in grandma's time.
Real pearls wear out and age, what is visible in getting mat, cracking, peeling, chipping off, and finally scattering into a fine powder. The life of a natural pearl is estimated at about 100-150 years, but there are few specimens up to several hundred years.
Avoid using any kind of harsh cleaning products on your gem. This includes items, such as baking soda and vinegar. The chemicals present in these natural cleansers could eat into the outer layer of the pearl and cause irreversible damage.
The lip determines the pearl color. While the white pearls are also priced by jewelers, the gold pearl variety is the most coveted color. The gold South sea pearl's color can range from creamy white to deep gold, and the darker the color, the more expensive it becomes.
The cleaner the surface of the pearl, the more valuable it is. Look for an absence of disfiguring spots, bumps or cracks on the surface of a pearl, also known as "cleanliness." Notice that the highest quality pearls have a sharp, mirror-like reflection.
This is because a real pearl has small ridges on its surface. These ridges may not be visible to the naked eye. However, experts and jewelers can check the “natural flaws” in a pearl using a magnifying object. In real pearls, these same ridges can be felt using the teeth.
Wetting pearls is never a good idea, as it begins to destroy the jewel. Pearl necklaces are damaged when they get wet, because the water damages both the thread and the pearl . When wet, the thread that holds the beads together begins to stretch and lengthen, so it quickly loses the desired shape.
If your pearl is authentic, you'll notice bubbles starting to appeal on its surface. This is because the acetic acid in vinegar is strongly reactive when exposed to calcium carbonate.
Never use chemical cleaners on pearls, even if they're naturally based or specifically made for jewelry. Natural cleaners often contain strong acids like vinegar that will destroy pearls, and jewelry cleaners often contain chemicals like ammonia or alcohol which will also damage pearls.
The most classic and widely preferred pearl color is white. The white pearl is considered a symbol of purity, and is often associated with wedding and graduation celebrations.
South Sea. South Sea pearls are often referred to as the Rolls Royce of pearls. They are the largest and most valuable pearls grown today, with average sizes ranging from 10 to 15 millimeters. South Sea pearls grow in a large pearl oyster native to Australia, the Philippines, Myanmar and Indonesia.
Fine Japanese Akoya Pearls
Perfectly round, beautifully matched, with a mirror like luster – Japanese Akoya pearls can't be matched for quality and high-end appeal. This is the classic pearl necklace.