LUSTER
Luster is the brightness and clarity of the reflection of the light through the many layers of the nacre of the pearl. If layers are applied uniformly by the mollusk, with few impurities or disruptions to the layering pattern, light can reach more deeply into the pearl and reflect back outwards in a brighter, more coherent (clear) reflection. The more impurities or broken layers, the fuzzier the reflection will be. This is, by most gemologists' standards, the most critical point in judging the beauty, rarity and value of a pearl.
OVERTONE
Overtone is the secondary color of a pearl. A pearl may have a neutral or silver overtone, as seen in the pearl in the middle in the photo, but oftentimes pearls will have hints of either pink or green, as shown to either side of the neutral pearl.
MATCHING
Matching is a direct indicator of how much time, care and effort was invested in creating a fine piece of jewelry. Even for simple stud earrings, "true twins" are very rare, simply because between two pearls even slight differences are more visible!
COLOR |
| SIZE |
| SHAPE |
| LUSTER |
| OVERTONE |
| SURFACE QUALITY |
| ORIENT |
MATCH FACTORS
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