Pearl Guide

It's the event we've all been waiting for, after two years of online everything... we can finally glow together!



Date and time
Sun, October 3, 2021
1:00 PM – 9:00 PM PDT

Location
Casa Madrona Hotel and Spa (Junto)
801 Bridgeway
Sausalito, CA 94965 United States

We will meet in the open-air Junto Room at the Casa Madrona Hotel in Sausalito.
We will start with a plated lunch at 1pm. The event will be catered by Poggio's Restaurant and will include several choices.
Next, we will enjoy...

I. Introduction

Blister pearls -and Mabe pearls, their modern equivalent- have been coveted, enjoyed, and worn for Centuries. But these products are not equivalent to actual pearls. Most pearl farmers consider Mabe pearls (also known as “Half-Pearls”) as a side-product, used to supplement their yearly income.
These pearls can be considered as “Pearls-on-a-Shell”, since they will be attached to the mollusk’s inner shell, either as an accident (as in the case of natural blister pearls) or...

Ever since those Chinese monks started their first cultured blister pearl, the technique has basically remained the same: an “implant” is glued to the inner shell of the mollusk, under the animal’s mantle. The mantle will cover the said implant and then slowly secrete nacre on top of it until -some months later- the Mabe blister has a good enough coating of nacre to be harvested and processed.

One of the important aspects of this pearl producing technique is the use of a wide variety of...

From 1908 to 1943, many Japanese entrepreneurs attempted -with mixed results- to utilize the “Penguin Shaped Pearl Oyster” (Pteria penguin) to produce both cultured blisters and whole cultured pearls. It all began with Sokichi Igaya on Amami Island in 1908, but his experiments soon closed. Jusaku Nakamura and Anami Oshima were more successful, but they always had problems securing enough wild adult pearl oysters for their farms. The main problem in this initial stage was the use of...

Blister pearls are probably the first variety of pearl product ever encountered by Humans. In Nature about one out of every 10 thousand mollusks will yield a natural, non-attached pearl (an actual pearl) but in the case of Blisters this number increases dramatically. Unfortunately, most of these blisters are not that shapely nor comely so they are never used, but those that were attractive were used for beautiful and unique settings.

There are three different kinds of Blister pearls, that...

On a controversial note, the SSEF lab in Basel, Switzerland, has introduced the world to a new pearl oyster species, aptly dubbed as Pinctada persica: a unique mollusk species that is only found in the Persian Gulf. This would be the first time -to my knowledge- that a pearl oyster species has been identified by its genetic markings or DNA. Previously, pearl producing species have been described and identified mainly by its shell and anatomical traits, but this is a new era of technological...