A day on Calypso snorkelling and diving Opal Reef. See a variety of marine life and amazing coral formations at three different reef sites in one day. Calypso is a part of Tropical Journeys which also offers tours to the picturesque coral cay, Low Isles, on the luxurious Aquarius and tours to Daintree National Park with Daintree Tours.
https://www.moregems.com/worlds-largest-fluorescent-hyalite-opal-7-27-carats.html -- Rare, natural, and unique fluorescent opal cut and polished by Steve Moriarty. This gem is from Zacatecas, Mexico and came out to weigh 7.27 carats! It was cut into a shield shape. This faceted rock really glows in sunlight and direct UV light!