Can you combine elemental gold and boron?
Yes, gold and boron can bond with each other to form alloy clusters. They are very important in semiconductor industry and used in fabrication process. Here(1) is a short note on gold-boron alloy:


  Photoelectron spectroscopy and density-functional theory are combined to investigate the electronic and structural properties of a
  series of $\ce{B-Au}$ alloy clusters: $\ce{B6Au_{n}^{−}}$ and
  $\ce{B6Au_{n}}$ ($\ce{n = 1−3}$). Rich spectral features are
  observed for each species, and vibrational structures are resolved for
  numerous detachment transitions of $\ce{B6Au^−}$ and
  $\ce{B6Au^{2−}}$. Electron affinities of $\ce{B6Au_{n} (n = 1−3)}$ are
  evaluated to be 2.70 ± 0.03, 2.91 ± 0.02, and 3.21 ± 0.05 eV,
  respectively. Global structural searches are performed for both the
  anions and their neutrals. The calculated electronic binding energies
  are compared with experimental measurements to establish the anion
  global-minimum structures and their corresponding neutral states.
  The ground-state structures of these clusters are shown to be planar
  or quasi-planar with an elongated B6core, to which the first and
  second Au atoms are bonded terminally and the third Au in a bridging
  position. All three anion clusters are π antiaromatic.
  Natural bond orbital analyses show that the $\ce{B-Au}$ bonding is
  highly covalent, providing new examples for the $\ce{Au/H}$ analogy
  in Au alloy clusters.


You can find more information about gold-boron alloy clusters in the reference below.

Reference


The Journal of Chemical Physics 138, 084306 (2016); doi: http://dx.doi.org/10.1063/1.4792501
https://www.google.com/patents/US3211550
https://www.ncbi.nlm.nih.gov/pubmed/23901981
http://aip.scitation.org/doi/10.1063/1.4816010
https://www.researchgate.net/publication/235886590_On_the_structures_and_bonding_in_boron-gold_alloy_clusters_B6Aun-_and_B6Aun_n_1-3
http://www.google.co.in/patents/US3137595