What is this?

[MamaCeleste]

Hi everybody. I bought this at a second hand shop. The guy told me it was abalone, but it looks more like a black lipped mother of pearl to me. I would love opinions on what it may be...

 

[Pearl Dreams]

There are green abalones but I haven't seen that color. The texture of the surface also isn't ridged like the green abalone pendants I've seen (images only, not in person.)
It could be a Tahitian mabe pearl (mother of pearl, inside of shell).

Or perhaps an osmeña "pearl"-- the polished inner shell of a nautilus, which can look different colors when the filling material is dyed. However all the images of osmeña "pearls" I've seen are white or bluish, not that brownish color, and not a pointed shape.

What does the back of the pendant look like?

For comparison here are photos of my Tahitian mabe pendant; the backing is mother of pearl. (That is the traditional way to back a mabe pearl.)

 

[Pearl Dreams]

It just occurred to me to link this excellent series of articles on mabe and blister pearls:

Thread 'I. Introduction to Blister and Mabe Pearls - Ultimate Guide'

Jul 9, 2021

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 induced (as in cultured Mabe pearls). Due to their origin -always being...

• CortezPearls
• Replies: 0
• Forum: Pearl Education

 

[ennui]

I think it looks like mother of pearl -- but I'd also like to know what the back looks like. The vibrant colors have me wondering if it's a doublet?

 

[Pearl Dreams]

Or is the surface reflecting the OP's clothing-- or outdoor sky and trees near a window?

 

[ennui]

This is polished black lipped (Pinctada margaritifera), for comparison... lots of pinks and greens

 

[MamaCeleste]

It is double-sided in the same material.

Here are pictures of both sides in different light. It seems like it fades in from a black background, then has all different rainbow colors, but no ridging pattern that I can see.

 

[Pearl Dreams]

If it's domed on both sides with just a bezel, maybe it's a polished piece of labradorite?

 

[ennui]

I think it is abalone -- abalone shells have vibrant colors on both sides. The lighter side of the pendant could have been a mabe pearl that formed on the inside of the shell, and they cut it out and polished both before the bezel setting.
Whatever it is, it's pretty and I hope you enjoy it!

 

[MamaCeleste]

If it's domed on both sides with just a bezel, maybe it's a polished piece of labradorite?

I am very familiar with labradorite, as it is my favorite stone. It's definitely not that. It is domed on both sides, but could be glued in the middle?

 

[Pearl Dreams]

Are you able to take some more photos, in different light perhaps? If you can wear something neutral and avoid reflecting anything colorful that might help too. (My front door is red and anything I photograph near it catches red reflections-- that, and the green of the grass in our front yard!