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.
Marcasite is a metallic iron sulfide mineral known for its steel‑gray shine and historic use in antique jewelry. Readers learn its scientific properties, traditional symbolism, care tips, and buying advice for this distinctive ornamental stone.
Stolzite is a heavy, lead‑tungstate mineral known for its high density, adamantine luster and range of yellow to brown hues. Though rarely used in jewelry, it is prized by collectors for its rarity and distinctive optical properties.
Thaumasite is a rare calcium silicate‑carbonate mineral that forms colourless to white crystals, prized by collectors for its ethereal look and occasional use in delicate jewelry.
Strontium titanate is a synthetic oxide gemstone prized for its high brilliance and diamond-like sparkle. Available in colourless to vibrant hues, it is used in jewelry as a cost‑effective alternative to diamond, making its properties and care important for buyers.
Kämmererite is a rare silicate mineral known for its pale green to yellowish-brown hues. Often used as a collector’s gem, its subtle color and limited availability make it of interest to gem enthusiasts and jewelry designers alike.
Ekanite is a rare, yellow‑to‑green silicate gemstone noted for its natural radioactivity and tetragonal crystal form. Collectors value it for its unique appearance, while gem enthusiasts seek guidance on meaning, care, and safe jewelry use.
Anorthoclase is a sodium‑rich alkali feldspar known for its colorless to pale hues and subtle brilliance. Gem enthusiasts value it for its unique mineral traits, metaphysical meanings, and occasional use in fine jewelry.
Psilomelane is a black, metallic‑luster manganese oxide mineral often found in massive form. Valued by collectors for its deep steel‑gray color and occasional use as a cabochon, it offers unique aesthetic appeal and intriguing mineralogical characteristics for jewelry designers and gemstone enthusiasts.
Tremolite is a silicate mineral of the amphibole group, known for its white to pale green coloration and occasional use as a gemstone in delicate jewelry. Its subtle hues, distinct cleavage, and historic significance make it a point of interest for collectors and crystal enthusiasts.
