| 29. | Financial result, net |
| | | 2017 | | 2016 | | 2015 | | |||
| Finance income | | | | | | | | | | |
| Results from financial assets and others | | | 739,148 | | | 136,715 | | | 164,615 | |
| Yields and interests | | | 405,562 | | | 386,001 | | | 293,506 | |
| Gain on sale of equity instruments | | | 13,236 | | | 47,129 | | | 72,339 | |
| Resources from Santiago de las Atalayas (1) | | | - | | | 688,664 | | | - | |
| Other financial income | | | 1,410 | | | 53,234 | | | 91,464 | |
| | | | 1,159,356 | | | 1,311,743 | | | 621,924 | |
| Finance expenses | | | | | | | | | | |
| Interest (2) | | | (2,385,994) | | | (2,765,024) | | | (1,768,618) | |
| Financial cost of other liabilities (3) | | | (753,047) | | | (580,491) | | | (627,827) | |
| Results from financial assets | | | (481,308) | | | (48,997) | | | (167,869) | |
| Other financial expenses | | | (40,252) | | | (69,028) | | | (154,100) | |
| | | | (3,660,601) | | | (3,463,540) | | | (2,718,414) | |
| Foreign exchange gain (loss), net | | | 5,514 | | | 976,430 | | | (5,566,614) | |
| Financial result, net | | | (2,495,731) | | | (1,175,367) | | | (7,663,104) | |
| (1) | Corresponds to the recovery of the provision “Comuneros – Santiago de las Atalayas”. Its balance consisted mainly from the valuation and financial gains generated while the cash that was subject to the reserve (see Note 23.3 for more information). |
| (2) | As of December 31, 2017, borrowing costs for the financing of developing natural resources and property, plant and equipment of COP$191,651 (2016 - COP$341,209 and 2015 - COP$744,426) were capitalized. |
| (3) | Includes the financial expense of the asset retirement obligation and the liabilities for post-employment benefits. |