2 beautiful pieces of petrified wood with a combined weight of 985 grams , almost 1 Kilo !! Petrified wood is actually fossil wood, millions of years old. After a tree dies, the shape and structure of the wood cells are converted into quartz, usually chalcedony, jasper and opal. Petrified wood often still has the colors of wood, such as various shades of yellow, orange, red, brown and black. However, other colors also occur, such as green, blue, purple and pink. There are beautiful pieces of petrified wood with cavities in which amethyst or other quartz crystals have grown. And sometimes the cracks or holes are filled with opal. This is then called wood opal. Petrified wood can occur in tropical, subtropical and temperate areas. The most popular are the pieces of petrified wood from Arizona and Madagascar, because of their beautiful colors and clearly recognizable wood structure. Ball of petrified wood: Diameter: 8.1 cm Circumference: 255 mm Weight: 677 grams Dimensions of slab of petrified wood. Maximum length: ..............................15.5 cm Maximum width: ................................11.5 cm Thickness:..............................................1 cm Weight: .......................................308 grams The gold metal stand is not part of the auction lot and will therefore not be shipped. Petrified wood is a silica (silicon dioxide). It can have all kinds of colors, depending on composition and environment. Pure silica is colorless, but this is rarely seen in petrified wood. The following minerals give the silica all kinds of colors. iron, the main dye, gives red and brown shades; iron hydroxide gives orange and yellow; manganese gives pink and orange; manganese oxide and carbon give black; copper, nickel and chromium are responsible for green and blue tones cobalt also gives blue hues. Composition: SiO2 + C, Fe, K, Na, O, OH, F, Cl Hardness: 6.5 - 7 Gloss: rough: matt, polished: glass gloss Transparency: usually opaque, sometimes translucent Fracture: irregular, rough, splintery Fissibility: none Density: 2.87 Crystal system: trigonal (chalcedony, jasper) or amorphous (opal) The English name for this stone is petrified wood. Will be shipped with Track and Trace. Operation: Petrified wood is a grounding and calming stone with a soft effect. It promotes our connection with the earth and reduces homesickness. As a result, we always have the feeling that we are in the right place and that we feel at home. The stone calms, creates a pleasant atmosphere and a feeling of well-being. It promotes a sober attitude, concentration and control. Physically, petrified wood stimulates the metabolism and counteracts obesity. Zodiac sign: Aquarius