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This study aims to reveal new information about the relationship between energy consumption and economic growth for the time-varying causality.

Economic growth and renewable and nonrenewable energy consumption data of the G7 countries (Canada, France, Germany, Italy, Japan, the UK and the USA) for the 1980–2016 period were used in the study. The nonasymmetric causality test developed by Hacker and Hatemi-J (2006) and both traditional and time-varying forms of the asymmetric causality test by Hatemi-J (2012) were used as the study method.

While the study favors feedback hypothesis for renewable energy consumption in the nonasymmetric causality tests in the UK economy, it favors the same hypothesis for nonrenewable energy consumption in the US economy. However, according to the results reported by Hatemi-J (2012), the feedback hypothesis, which is supported for the UK, is supported only in positive shocks, yet not for each period of analysis. Similarly, feedback hypothesis, which is supported in the USA, is supported only in the negative shocks, yet not for each period of analysis.

This study examined that the asymmetric causality relationship between variables can be analyzed in time-varying form. Therefore, whether positive and negative shocks in renewable and nonrenewable energy consumption always provide useful information in estimations about economic growth is analyzed.

This study aims to analyze the presence of a long-term relationship between precious metal prices, such as for gold, silver, platinum and palladium, and Islamic stock markets of 32 different countries – 21 developed and 11 developing. In this study, the long-term relationship between the precious metal prices and the Islamic stock markets of countries grouped by the Morgan Stanley Capital Index (MSCI) according to their level of development was examined. In the economies included in the study, it is necessary that the Islamic stock index be created by MSCI. It is not a constraint as a Muslim country.

This study used the Pedroni panel cointegration analysis and full modified ordinary least square method. All analyses in this study were performed using monthly data from 2002 to 2015.

According to the Pedroni panel cointegration analysis applied in this study, all four precious metals – gold, silver, platinum and palladium – are effective portfolio diversification tools for developed Islamic stock markets within the analyzed period. However, in developing countries, although gold and palladium are effective portfolio diversification tools, silver and platinum are not.

These results provide practical implications for academicians, practitioners as portfolio managers, policymakers. These implications are related in portfolio risk management, the diversification benefits and to propose new investment tools among developed and developing Islamic markets.

This study is important for investors who assemble portfolios under the restriction of selecting investment tools suitable for Islamic rules. These investors are important in terms of using precious metals that they prefer as an alternative to stock markets to protect against the risks related to their suitable portfolio options. Governments, individuals and institutional investors that use capital stock according to Islamic rules in developed countries can effectively use gold, silver, platinum and palladium as hedging tools. However, this choice is limited to only gold and palladium in developing country markets. Gold continues to be an effective diversification tool in Islamic share markets, as in traditional stock markets.

The author would like to emphasize that this article is second to examine precious metals and Islamic stock markets in literature.