The first wife of a sovereign prince of Liechtenstein that came from the house of Kinsky was Princess Franziska de Paula, wife of Prince Aloys II, and the second (always excluding the smaller branches of the Liechtensteins) was and is Marie Aglaë the current Princess consort.
Aloys II was great great grandfather uncle of the current sovereign prince.
Georgina (Gina) was a Countess of Wilczek (not from the Kinsky family)
According to René Brus (if I understood correctly) the tiara was a gift from Ferdinand Bonaventura Prince of Kinsky of Wchinitz and Tettau to his wife Maria Josepha Princess of and to Liechtenstein, what is not clear is how did this jewel at the hands of the current sovereign of Liechtenstein when she coming in her origins of a secondary branch of the family Kinsky (not the one that bears the title of princes).