Are all the purple sapphires in this collection star sapphires?

No. Some stones in this collection show six-ray asterism and some do not. Each product page states what its own GIA report records, including the cutting style.

What does a GIA report confirm on a purple sapphire?

A GIA report states the species and variety, the weight, measurements, shape, colour and cutting style as findings, and records any heating under Additional Results. Where it gives a geographic origin, GIA prints that this is an expert opinion.

Are these purple sapphires heated or unheated?

They differ, and each product page states what its own report records under Additional Results. We attach no achieved effect to a heating entry.

زفير بنفسجي مع تقرير GIA - أحجار كريمة طبيعية سائبة موثّقة مخبرياً