lawaughnmiller: I would say by the pictures these range between 4 x 4 mm to 6 x 6 mm...but the cuts do not look like they are exact..so most likely something like a 5.23 x 5.12. that is a pretty good educated guess without having them in my hand.
Not to be mean at all,but are you sure the blue one is not sky blue topaz, instead of sapphire? Even the amethyst look very light for amethyst.They look like rose quartz...but they are more likely to be amethyst than the blue one is to be a sapphire. Light colored sapphire is much more expensive than the darker colors in sapphire. Dark sapphire is not see thru they are very dark blue and have so much saturation they do not shine no matter the cut.
If these have been tested and you have the papers i apologize profusely....and if indeed you do have papers that validate that the blue one is sapphire, i might want to jump in and bid here!! It just looks too light to be sapphire...it is even more likely to be an aquamarine, which is rare as well, but not as rare as a sapphire of this color! If you are really lucky it could be a paraiba tourmaline which is more rare than all of those!! Maybe you have a tester..and if it is a guaranteed sapphire, please let me know..i just may be your high bidder!! they are very pretty no matter the names of the stones tho!!!
One more thing for everyone...notice the fancy checkered cut facets on the blue stone!! The purple ones have normal cut hearts...but the blue one has a speciality cut..if you look closely..it has little like checker board cuts all over the surface...this alone makes the stone worth more, for the time they put into cutting that gem stone!