Chalcedony var. Chrysoprase from Australia / Mineral Friends <3
Grains of sand magnified by 250 times.
Bloodshot Iolite. Known as the gemstone of the Vikings, Iolite was used by Norse and Viking explorers as a navigational aid, as a properly oriented stone would change color in relation to the direction of sunlight, allowing for crude navigation in the fog- enshrouded northern Atlantic waters where the direction of the sun was otherwise impossible to discern.
Granat (Mn32+Al2(SiO4)3) 9.AD.25 Granat-Gruppe 9 : SILICATES (Germanates) A : Nesosilicates D : Nesosilicates without additional anions; cations in  and/or greater coordination
Incredible space stone seems like it has a nebula trapped inside
Enhydro Skeletal Citrine Crystal.
Fluor-liddicoatite [or just Liddocoatite] is a rare member of the tourmaline group of minerals, elbaite subgroup, and the theoretical calcium end-member of the elbaite-fluor-liddicoatite series.
"This is what we call good size of gem crystals!" M. Bienkowska photo. SpiriferMinerals.com - mineral specimens, minerals collecting, high quality minerals, fluorite, tourmaline