Klein, 49, was forced to shove the 'Bride of Wildenstein' into a closet to prevent another attack before cops arrived to book her on felony assault charges.
The glamorous duo have been dating since 2003 but the relationship is now over because Klein considers Wildenstein a 'ticking time bomb'.
Wildenstein and Klein are believed to have enjoyed a meal Tuesday evening before the wealthy divorcee accused him of spending too much time on social media.
'They had a relaxing dinner, everything was normal then Jocelyn suddenly got angry as she often does,' said the sourceWildenstein is most famous for her multiple plastic surgeries.
'Lloyd was using his laptop and evidently not paying her enough attention. So she screamed at him to get off the computer then picked up a lit candle and threw the hot wax all over him.He was very scared, he asked her to calm down but she just got angrier and angrier and threatened to kill him.'She then went at his face with her nails, which are real and very sharp, before finally grabbing some scissors and stabbing them twice into his chest.'
She also made headlines in 1999 when she won the largest settlement in divorce history.
Wildenstein was awarded $2.5billion and an additional $100million a year for 13 years after splitting from her husband of 21 years, Alec Wildenstein.