Finance Calculator At 77 Diamonds, we understand the importance of getting your purchase right and the best value is at the forefront of all that we do. For this reason, we offer all UK customers (subject to financial assessment) the opportunity to pay via finance for their purchases with interest free credit available. Use the finance calculator below to calculate the deposit and repayments involved with the budget you have in mind. Amount: * Period: * 6 Months (0% APR) 12 Months (9.9% APR) 24 Months (14.9% APR) 36 Months (14.9% APR) Deposit: No of Payments: Loan Amount: Product Value: Amount Payable: