WE ALL WANT A BARGAIN WHEN IT COMES TO DIAMONDS, HOWEVER,BE CAREFUL WHEN BUYING A SECOND HAND DIAMOND OFF EBAY. ALWAYS ASK THE SELLER FOR THE COLOUR AND CLARITY OF THE DIAMOND, AND VIEW THE CERTIFICATE,AND ASK WHETHER ANY FLAWS IN THE DIAMOND CAN BE SEEN WITH THE NAKED EYE, IDEALLY, PICK A SELLER WHO WILL OFFER A REFUND, OR WHO WILL MEET UP AND SHOW YOU THE PIECE OF JEWELLERY FIRST,AND ALWAYS PAY THROUGH PAYPAL, BECAUSE YOU HAVE NO COMEBACK IF ANYTHING GOES WRONG. iF A SELLER STATES 'SPARKLY' 'WHITE' ETC, THAT MEANS NOTHING WITHOUT THE COLOUR AND CLARITY CERTIFICATE. ALWAYS ASK WHETHER THERE IS ANY DAMAGE, AND WHAT THE HALLMARK STATES, BEWARE OF STUNNING DIAMONDS BEING SOLD FOR PEANUTS, THEY ARE PROBABLY FAKE, OR SUB STANDARD.NO ONE IS GOING TO SELL SOMETHING WORTH TEN GRAND FOR £100!!! GO ONTO GOOGLE AND LOOK AT THE DIAMOND CLARITY/COLOUR CHARTS OR CONTACT A REPUTABLE JEWELLER AND ASK THEIR ADVICE.