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sorry we misunderstood each other. I am aware of what a momme is, actually it is 3.749 grams rounded off to 3.75 for easier computation. what I do not understand is why a "3.75"... if 97 pieces and the total weight is 3.75 so this would be equivalent to an average of 2.121 millimeters of...

Thanks Pattye. I am puzzled by the wilma Flinstone size, the name is Chanel and the source is the Professional Jeweller yet those look like imitation and lightweight as you mentioned. This goes with a couple of article I noticed where imitations were put forward; yes, Chanel isn't a producer and...

Just being curious, would you know why 3.5? does this mean that the total weight of the pearls is 3.5 momme if so I find it hard to reach reconciliation... Thanks for your feedback

ha? I thought you said: :D

Educating Staff and Consumers Staff training has also become important, not only from a trends point of view – knowing who is wearing pearls now and making them a must-have can lead to a strong sales edge – but also a technical one, as staff should be able to advise customers about pearls as...

an article from the February issue of Professional Jeweller. Professional Jeweller's Kathryn Bishop discovers how pearl jewellery design is evolving in a trend report on new interpretations of a very classic gem. The future of jewellery design and pearls are not the most harmonious of...

:) I am not Dave but I believe I posted that before: an informed forum is a strong forum... If I may add, a scientific or academic opinion is always subject to controversy, discussion, refutation and eventually acceptance (before being proven wrong and the whole cycle starts again...) Dave...

Thanks. :)

thanks for the feedback. what do you mean by 'that looked exactly like a super-fine Akoya pearl' are you referring here to the size of the pearl?

I personally observed presence of mud, aglaophenia, developing bryozoans and even silt and sand (silt is smaller in diameter than sand) within the first inches (lips) of weakened shells, at that stage the metabolism is quite low, fecal matter limited mainly because intake is limited. During...

Caitlin, based on my modest experience with Pinctada maxima, I have, in a few rare occasions, seen non-seeded shells bearing minute pearls, ipso facto not a by-product from seeding operation (verified and confirmed). True those are rare, I recollect less than 3 cases over a period of 15 years...

as seen here. An article by Manta Klabgboonkrong The Nation Palawan, the Philippines March 15, 2013 4:11 pm After 30 years of hard work, a French-Filipino effort has cultivated lustrous golden pearls If diamonds are a girl's best friend, then golden pearls are her new pals. Because ladies...

I am curious about what the professionals here think about this, wouldn't it be difficult if not inaccurate to give an appreciation on the provenance of a pearl based on a picture... While most dyed pearls could be detected using magnification, the improvement in technology shows that the use of...

couldn't agree more with dave. this said sand is not limited to quartz, be reminded that depending on your geographical location sand could be a particle of calcium carbonate such as aragonite of about 62 micron to 2mm of diameter

Well food for thought: I was interested in your point of view as it is always important to challenge what we think we know... Evolution in technology allows us to see now that what we knew right yesterday may actually be wrong tomorrow.

Exactly! Also you must define 'parasitism' (since the term is coined here). if you are referring to species such as Pinnotheridae, then this is not parasitism...

mmmh, purely an academic question, as I am not a specialist in this area, could you please tell us if those hormones are the result of an endogenous biosynthesis or picked up from the environment?(i.e. progesterone, testosterone and 17β-estradiol) Thank you.

most welcome. Anaesthesia acts on the muscle and on the nerves. Anaesthesia inhibits the transmission of influx in the nervous system...

No, the 'brain' of a mollusk is a nervous system divided into a pedal ganglia near base of foot, a cerebral ganglia near the oesophagus and a visceral ganglia near adductor muscle. centralized or autonomic or peripheral nervous systems are found in many creatures, this doesn't not imply...

1mm is extremely thin for South Sea pearl... I guess it is just a matter of perspective.