This duo is so special, it needs a formal introduction :
Rainbow Lattice Sunstone / / Aquamarine
RARE AF Australian Rainbow Lattice Sunstone - a mouthful of confetti! This type of sunstone is only found in the Rainbow Serpent mine (Harts Range) in central Australia. It is a type of feldspar (same family as moonstone) which contains the aventurescence effect and the Schiller effect, aka sparkly freckles and a reflective haze, respectively. Hematite and magnetite are responsible for creating the crystallographically oriented inclusions, which look like micro confetti and twining lattice blades. Oxidization and geophysical wear and tear makes those inclusions look iridescent to our eyeballs!
Aquamarine, the name derived from the Latin etymology for sea water, is a type of beryl. Emerald and aquamarine are two common types of beryl, with a hardness of 7.5-8 on the Mohs scale. Raw specimens can grow up to a foot in length in a six sided crystal structure. Aquamarine is found at high altitudes in the mountains of Colorado, Brazil, and Pakistan.