Superior cultural stone surfaces exhibit even coloration without excessive杂质 or blotches, lacking distinct light and dark transitions. In contrast, inferior cultural stone, after processing, often features numerous irreparable "defects." Therefore, the pattern and coloration of the cultural stone surface are significant indicators of its quality. If the processing technology and craftsmanship are subpar, the finished products may show warping, dents, spots, stains, chipped edges, corners, cracks, color lines, and pits, all of which classify the cultural stone as "substandard."

In normal circumstances, quality cultural stone should possess the following characteristics: smooth surface, free of roughness upon touch; bright on the front, showing consistent reflection when observed against light without flickering; evenly cut edges, appearing as a straight line when viewed from the side, without jagged or uneven ridges; even coloration, with no visible color variations across each stone's surface; and clear textures, with consistent patterns among stones of the same type, without notable differences.

When purchasing, listen for the sound of the cultural stone being struck; good quality cultural stone should have a clear and pleasant ring. If there are minor cracks internally or if the particles have become loose due to weathering, the sound will be rough and muffled, indicating poor quality. Additionally, measure the dimensions of the cultural stone to ensure proper fitting and to avoid distortion in patterns, designs, or lines after assembly, which may affect the decorative effect.

Cultural stone is easily split into thin slabs with small areas and moderate lengths, and was commonly used in gardens for ground cover and roof tiles in the past. Due to its rustic and natural appearance, it has become popular for partial wall decorations in interior design. The natural splitting effect of cultural stone is typically left unpolished and unstrengthened, so it is suitable for use as long as there are no through cracks.

Limestone is dense in texture, moderately strong, and easy to process. It can be cut into thin slabs or strip materials using simple techniques, making it an ideal decorative building material. It is commonly used for wall panels, floor tiles, courtyard railings (boards), steps, etc., and has the style of ancient architecture. The color of the commonly used cultural stone ranges from soybean green and dark soybean green to various shades with grayish crystalline particles. The processing technology of cultural stone varies, resulting in different textures such as coarse-textured panels, fine-textured panels, and chopped-axe boards. It can also be processed into a smooth (polished) surface according to architectural intentions.

Fossil stone is a new type of decorative material, offering excellent quality at a reasonable price. Its rich cultural heritage also endows it with high aesthetic and collectible value.