(Closed) How to tell a black diamond from a black moissanite?

posted 5 years ago in Rings
Post # 3
Member
2118 posts
Buzzing bee
  • Wedding: May 2013

@Rachel631:  Why don’t you bring them to a reputable jeweler? I’m sure they’d be able to tell you what kind of stone it is. 

Post # 4
Member
1784 posts
Buzzing bee
  • Wedding: September 2013

Does black moissanite even exist?  I don’t think I’ve ever seen any. 

Post # 7
Member
6360 posts
Bee Keeper

Black diamonds should be pretty cost effective already. I don’t think they would make synthetic black moissanite because they’d have a much lower profit margin.

@Jabberwocky, some natural moissanite is apparently black (some is dark green). Of course, all much too small to make earrings out of.

Post # 9
Member
2118 posts
Buzzing bee
  • Wedding: May 2013

@Rachel631:  Ah, I see. I’m interested to know if there really is an easy way to tell. I’ll let you know if I figure anything out. 

At least it wasn’t ID’d as cubic zirconia, whether it is diamond or moissanite it is still a great gemstone. (Nothing against CZ, it just wouldn’t have been the quality you purchased)

Post # 10
Member
6360 posts
Bee Keeper

@Rachel631:  Interesting!

OP, I’d say this is a case where it would be really hard to tell as a layperson. All the usual visual properties that discern the two materials are obscured by the blackness. Maybe it would still show some yellow-green fluorescence under UV light, but I’m not sure black stones can fluoresce… that may be obscured too.

Post # 13
Member
6360 posts
Bee Keeper

@Rachel631:  Ah but they don’t fluroesce the same color!

almost 1/3 of diamonds do have fluorescence and this proportion might be higher for black diamonds since fluorescent diamonds fetch a lower price and therefore are more likely to be treated (as you mentioned, yours are probably irradiated black). However, the color is almost always BLUE!

Moissanite on the other hand, fluoresces YELLOW-GREEN!

I say try out a black light 🙂

Post # 14
Member
1784 posts
Buzzing bee
  • Wedding: September 2013

@joya_aspera:  I knew that.  I meant out of moissanite that is sold.  I didn’t think C&C made any black moissanite.

Post # 16
Member
6360 posts
Bee Keeper

@Rachel631:  electronics store, lighting store, or ebay. Should be pretty inexpensive!

The topic ‘How to tell a black diamond from a black moissanite?’ is closed to new replies.

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