Kali started living in 5 things.
The 5th one is gold.
Hence in this dark age , gold is something worth avoiding as below 5 things resides in gold
1) Asatya / Untruth
2) Mada / Arrogance or Insensitivity or rudeness gained in internal nature or lack of politeness eg Srimad means arrogance attained due to wealth
3) Kaam / Lust
4) Irshya / Jealousy eg Jealousy is a virtue in which a person cuts the height of others to make himself or herself feel big.
5) Vaimanasya - Ill will or enmity. Lack of good will