SmartGold offers customers a completely digital, secure and seamless process for buying gold and redeeming their investments in exchange for cash, or gold coins, or gold jewelry. Customers can now invest in digital gold anytime, anywhere, starting as low as Rs. 10. SmartGold offers customers a completely digital, secure and seamless process for buying gold and redeeming their investments in exchange for cash, or gold coins, or gold jewelry. Customers can now invest in digital gold anytime, anywhere, starting as low as Rs. 10.