The feldspar has partly unmixed on the micro-scale to form a perthite, and the presence of the alternating alkali feldspar and plagioclase layers give its characteristic silver-blue schiller effect …

Oct 10, 2024 · Feldspar is one of the most common minerals found in the Earth’s crust, and it forms some really fascinating varieties. Amazonite, orthoclase, and microcline are great examples of the …

Blue Feldspar mineral data, information about Blue Feldspar, its properties and worldwide locations.

Blue color in the amazonite variety of potassium feldspar (and pale-blue albite as well) is from the interaction of trace amounts of Pb 2+ in the feldspar with ionizing radiation (again, the radiation …

Aug 13, 2025 · Feldspar is a giant mineral group, but the main types of feldspar fall under plagioclase and alkali groups. Discover every type of feldspar gemstone, including their prices, properties, and …

May 14, 2025 · Alkali feldspar (also called potassium feldspar or K-feldspar) has a color range from white to brick-red, and it's typically opaque. Many rocks have both feldspars, like granite. Cases like …

Blue Feldspar is disseminated among massy Quartz, accompanied with Talc in the fissures, in the same way as common Feldspar occurs in Granite; it has only been found in the valley of Murz, near …

Check out our blue feldspar selection for the very best in unique or custom, handmade pieces from our home & living shops.

The answer, perhaps surprisingly, is that feldspar can come in a wide array of colors, influenced by its chemical composition and geological history. This guide provides a comprehensive overview to help …

Amazonite, a distinct blue-green variety of microcline (a potassium feldspar), owes its vibrant color to lead and water within its structure. This striking blue-green can also appear mottled with lighter green …