What are these gem stones

Hello everyone not sure if gem stones should be posted in jewelry but they once came out of jewelry so I thought I would post them here ….I have these 2 gem stones that I would like to have some options on and to figure out what they are ,in different light they change color in bright sun they are a bright pink in the house they are a purple color and outside shade the have a light blue any info on them would be greatly appreciated thanks Matt.

 

Possibly synthetic alexandrite,would need to be tested.

 

Thanks hollyblue that was the name I was trying to think of I have always been Fascinated with them when I was a kid seeing them at my grandmothers house now it’s something I have put away until I found them again today and thought I would post them to see what they where. Thanks again Matt.

 

Put the diamond tester on 3 and it shot all the way up on the meterso they are a hard gemstone now sure if that means anything ..thanks matt

 

There's a synthetic color-change sapphire that fits the bill.

 

There is no way to ID a stone like this from photos.

Does your gem tester come with paperwork that tells you what the different ranges mean for IDing a stone? If not, if it just for testing diamonds, then it doesn't really help. Plus, gem testers can not differentiate between natural and man made stones. You need to take them to someone who can do a proper ID on them to know for sure what they are.

 

They behave like color change sapphires, aka simulated alexandrite. And if that is what they are, it is a virtual certainty that they were lab grown.

 

Thanks everyone for the responses it’s always good to hear from all the great people that’s on this site. Thanks again. Matt.