Featured Help with a stone, please. Tests sapphire but is purple

Got a nice ring thinking it was amethyst with red flash. Presidium says otherwise. Flies up to sapphire. I know they come in different colors. This is large and eye-clean Of course I don’t know if natural or synthetic. The style of the setting is making me think atomic era and vintage. I know synthetic alexandrites were popular but I don’t see any color change as I would expect. The red flash has me baffled. Do you think purple sapphire? Both stones test the same. It does not fluoresce under black light

hmm

thank you for any help.

 

Sounds like a lab grown purple sapphire. Under UV light the color change stones turn green & red, so you've ruled that out. Setting screams 1970s.

 

Agree with @Bronwen it's almost certainly a synthetic sapphire, they were very popular from the 50's to the 70's and you get some very large examples on rings and brooches from the period when they had perfected the process of growing large flawless boules. The colour shifting ones were (are) sometimes called synthetic alexandrite which is a misnomer as they are corundum which is entirely different to alexandrite. Synthetic alexandrite is produced and is very expensive compared to synthetic sapphire.

 

The Make Up Of Purple Sapphires
Purple sapphires are sometimes confused with amethysts; a variety of quartz. The abundantly common quartz registers a 7 on the Mohs scale of hardness, compared to the Sapphire’s 9, and can be easily broken, chipped, or shattered. Not only more rare, but sapphires are more durable than amethysts to the daily knocks of life, the only material harder is diamond. In terms of brilliance and sparkle, once again the sapphire comes well ahead, if you put an amethyst and a sapphire next to one another you’ll see that a sapphire has much more sparkle and clarity.
⁣Purple Sapphires : Tips For Buying A Perfect Purple Gem (thenaturalsapphirecompany.com)

 

That setting is fabulous.

 

This is largely a marketing blurb. Amethyst is much more common, but is still tough and hard to scratch, it is harder than steel. Also moissanite is harder than sapphire, not just diamond. Brilliance and sparkle is down to the cut and quality of the gem, as flawless gem quality amethyst is much more abundant and more easily cut than the equivalent natural sapphire you will often find amethysts which look much better than the average sapphire.

 

If you were selling this, how would you title it so I don’t list it wrong. I thought 50’s but I see 70’s could be good as well. I thought the style was atomic but what would you say? I’m at a loss for this one. Hope you don’t mind me asking in y’all

 

are there any markings on the band?

 

Modernist..........comes to mind !

 

Lovely! That red flash is gorgeous!

 

How would you list it?.......'Possibly sapphire, date unknown - Possibly 50s, maybe 70s'. I think a bidder would just be interested in the appearance.

THE ABOVE REMARK IS JUST MY UNEDUCATED OPINION.

 

It is marked with an older 14k

 

It's more space age than atomic to my eye. Orbiting satellite, hm?

 

That’s the term I was looking for! Bingo. Lol. Ty

 

As a space flight geek, I love it!

 

I think it’s purdy. I love the stone color and it’s BIG!

 

I'd call it Space Age too, but dunno if anyone would put that in a search box. If it's going into a shop, the design will sit there and say "Wear me!"