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Pearl Science Laboratory Certificates - The Gray Pearls of Tahitian Pearls


Today, let’s talk about the gray(silver-blue) serise of Tahitian black pearls!
Unlike the temperament gray of akoya pearls, the gray pearls of Tahiti are deeper and heavier.
30 year anniversary Tahitian gray pearl strands
parents anniversary gift pearl necklace
Pearl Science Laboratory has has set 2 levels for the gray Tahiti pearls as "オーロラ プラチナブラック(Aurora Platinum grey)" and "Aurora Ocean Blue".
Let's interpret the contents of the certificate.
The content on the left is from top to bottom: Pearl image, certificate number, pearl type, jewelry style, pearl size, and identification method.
The contents on the right are in order from top to bottom: Special Appellation, Thickness of Nacre, TERI Analysis, Brightness, Iridescent Color, Body color, Inperfection & Surface, Shape. The left side of the last column is the quality grade mark; the right side is remarks. The main information is the interference color image under the exposure of a professional instrument. Other information, for example, the first item is natural color, the second item is the inherent color of pearl layer. These two assessments depend on the circumstances. If the pearls are natural in color and your company asked to require natural in color certification, these two items will be added to the remarks column.
See this article for details👇
Here show some Aurora Platinum Grey Pearl strands.
mikimoto pearl necklace pearl strands

 

necklace clasp types Tahitian silver-blue strands

mikimoto pearl necklace Tahitian aurora ocean blue

add a pearl necklace aurora ocean blue

pearl stud earrings aurora ocean blue certificates

 tahitian gray pearl necklace

tahitian gray pearl necklace with P.S.L certificate

 

 The Second Grade is Aurora Ocean Blue.

Aurora ocean blue strands

 wedding shower gifts aurora pearl necklace

best anniversary gifts best gem quality aurora ocean blue pearl necklace

30th wedding anniversary ocean blue

aurora ocean blue Tahitian pearl strand with certificate

In fact, Ocean Blue is similar to Platinum Gray. They are all gray series, the differ in blemishes, grades, and signs.
プラチナブラック is "the Best Gem quality"
Ocean blue is "the Strongest TERI"

Blemishes of プラチナブラック: Very Slightly
Blemishes of Ocean blue: Slightly

Grade of プラチナブラック: Type - S
Grade of Ocean blue: Type - K/J

Generally speaking, gray Tahitian pearls are not with overtones. If you meet gray tahitian with beautiful overtones, don't miss it.