Made in USA,highest quality in the market. GOLD RETENTION TIME 2-3 YEARS....20mls of real gold laid over a heart of semi-precious metal,10 times more gold than regular plating. LIFETIME FREE REPLACEMENT WARRANTY.because .. made in USA ,unconditional life time warranty with free replacement,when the gold wears off overtime we will replace with brand new one as many times as you want ,HYPOALLERGENIC ,we use finish coating of 18k gold(US standard gold color for jewelry) on surgical steel,for scratch resistant.long life and hypoallergenic.Chains have been tested and they are NICKLE, LEAD and ALLERGY FREE so your skin is safe with our chains.,100% MONEY BACK GUARANTEED if you have allergy reaction,green mark, SWEAT PROOF AND TURNISH RESISTANT..you can wear at gym, pool party, beach party,any weather, any occasion,we use latest processing technology and special coating to provide long life and wear resistant,plus lifetime free replacement. 100% MONEY BACK GUARANTEED AND FREE SHIPPING.. 90 days money back guarantee FOR ANY REASON.