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2015 | 2(23) | 110-126

Article title

Diamenty jako przykład inwestycji alternatywnej



Title variants

Diamonds as an example of alternative investment

Languages of publication



The article describes the main determinants influencing success of investment in diamonds. The purpose of the article is to examine how the caratage, clarity, cut, color, shape and the certification institution influence the price of a diamond. For this purpose, five econometric models were built (for specific weights of diamonds and one for all of the collected data). For the realization of this research goal characteristics of more than 265,000 diamonds were used. The paper identifies the differences between the variants of studied traits and the price of diamonds. The analysis found that the heavier stone the greater differences in price because of the variants of studied traits. The average difference in the valuation of diamonds due to the single-difference in the color of the stone is over 11% for all examined observations. In the case of the clarity this average difference in price between neighboring steps of the clarity of the stone is almost 8%, and for the quality of cutting is less than 5%. In addition, it has been shown that the most expensive stones are certified by GIA certification firm, AGS and HRD, and for the ten analyzed shapes most expensive form is round. For the shape characteristics an inverse relationship was noted than for other characters used, ie. the lighter stone is, the greater difference in the price of round diamonds than for other shapes. Round shape is the most popular for the jewellery application, especially in engagement rings and because this round shape is more expensive than other shapes.





Physical description



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Document Type

Publication order reference


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