The LTV is 60% for gold and 50% for silver.
Related articles:
What is the minimum amount for a Loan?
http://help.stackermarket.com/en/articles/5355844-what-is-the-minimum-amount-for-a-loan
What is the length of time of the Loan?
http://help.stackermarket.com/en/articles/5355845-what-is-the-length-of-time-of-the-loan
Can I use the loan to buy more Gold & Silver?http://help.stackermarket.com/en/articles/5355847-can-i-use-the-loan-to-buy-more-gold-silver
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http://help.stackermarket.com/en/articles/5355851-what-is-the-general-interest-rate-of-the-loans