Nacreous pigment with high chroma and multiple colors and method of preparing the same

A method of preparing a nacreous pigment, comprising:

• preparing a suspension by mixing a flake substrate containing at least one of synthetic mica, natural mica, glass, iron oxide flake, alumina flake and silica flake with de-ionized (DI) water to produce a flake mixture, followed by stirring and dispersing the mixture;
• forming a first metal oxide layer on a surface of the flake substrate by titrating a first soluble inorganic metal salt solution to the suspension, followed by hydrolyzing the first soluble inorganic metal salt solution;
• forming an oxide layer on a surface of the first metal oxide layer by titrating a soluble inorganic salt solution containing MgO.SiO2 to the suspension obtained by titration of the first soluble inorganic metal salt solution, followed by hydrolyzing the soluble inorganic salt solution, wherein the suspension is adjusted to have a pH in the range of more than 4 to 14 and is refluxed for 30 to 60 minutes after titration of the corresponding solution;
• and
• forming a second metal oxide layer on the surface of the oxide layer by titrating a second soluble inorganic metal salt solution to the suspension obtained by titration of the soluble inorganic salt solution, followed by hydrolyzing the second soluble inorganic metal salt solution.