Explore the geological wonders of Idaho, from the vibrant Star Garnets of the Salmon River to the rare opals of the high desert. This comprehensive guide details the state’s most prized minerals and their gemological properties.
While often grouped together in jewelry, crystals and mineraloids possess fundamentally different atomic structures. This guide explores the critical distinction between ordered crystalline lattices and amorphous mineraloid forms.
Rainbow (var.) is a term used to describe gemstones that display a vivid, multicolored iridescence known as a rainbow effect, found in varieties such as fluorite, opal, quartz, and tourmaline, making them prized for their visual brilliance and decorative appeal.
Moss opal is a distinctive variety of opal featuring green, brown or black moss‑like inclusions set in a dark silica matrix. Known for its earthy charm and subtle play‑of‑color, it is prized in jewelry and sought after by collectors for its unique visual appeal.
Fire opal is a vivid, warm‑colored variety of opal that ranges from golden yellow to deep orange‑red. Its striking hue and translucent glow make it popular in jewelry, while traditional lore attributes it with energetic and emotional benefits, prompting interest from collectors and crystal enthusiasts alike.
