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UDC 658.62:005.52]:679.854.8		DOI: https://doi.org/10.31617/tr.knute.2020(35)05
Volodymyr INDUTNYI,   E-mail: Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її. ORCID: 0000-0001-6676-7472		Doctor of Geological and Mineralogical Sciences, Professor  at the Department of Commodity Science and Customs Affairs Kyiv National University of Trade and Economics 19, Kyoto str., Kyiv, 02156, Ukraine
Nina MEREZHKO,   E-mail: Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її. ORCID: 0000-0003-3077-9636		Doctor of Technical Sciences, Professor, Head  of the Department of Commodity Science and Customs Affairs Kyiv National University of Trade and Economics 19, Kyoto str., Kyiv, 02156, Ukraine
Kateryna PIRKOVICH,   E-mail: Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її. ORCID: 0000-0002-1461-0235		Candidate of Technical Sciences, Associate Professor  at the Department of Commodity Science and Customs Affairs Kyiv National University of Trade and Economics 19, Kyoto str., Kyiv, 02156, Ukraine

 
Background. Marble is widely used to create works of art – sculptures, reliefs, ornaments for architecture, interior and even personal decorations. Marble products have special qualitative characteristics, and also their own distribution of cost indicators, which necessitates the development of methods of commodity assessment of quality and cost forecasting of marble products.
The aim of the work is to describe the most correct algorithm for conducting a commodity assessment of quality and determining the estimated cost of marble products, which is performed on the basis of operations of comparison with similar in quality of raw materials and sizes of products presented on the modern Ukrainian market.
Materials and methods. The first stage of the research is the creation of a base of out­putinformation about similar in size marble products for sale. The second is the distribution of products by price. The third is to study the nature of the distribution of cost indicators for marble products and the selection of several groups similar in quality characteristics. The fourth is to build a mathematical model to approximate the observed cost indicators. Fifth – verification of results of application of mathematical model on real examples.
Results. The method of carrying out commodity assessment of quality and deter­mining the estimated cost of marble products is described. There are 2 commodity groups, which differ in the trend of cost growth. It is proved that the samples of the second group have cost indicators, which are substantiated by qualitative characteristics. The base cost for the valuation of marble products has been determined. A mathematical model has been created to calculate the estimated cost of marble products. Indicative cost indicators for marble products of different levels of sociocultural value have been calculated.
Conclusion. The quality of marble products is determined basing on the trade­tions of trademarks use and the set of criteria described in the special protocol. The cri­teria are reflected in the indicator of sociocultural value, which is proportional to the amount of positive information about the product. The estimated cost indicators should be used to determine possible financial loss in case of loss of cultural monument or property disputes; as indicative indicators of possible market cost or indicators in financial trans­actions – insurance sums, collateral value, rental value and more.
Keywords: expert assessment, cost forecasting, marble products, protocol, eva­luation criterion.

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