Established in 1947, Sinclair'sJewellers has over 60 years of unbroken service to the public. Still owned and operated by the founding family, Sinclairs is now one of the oldest jewellery firms in Perth, Western Australia. Specialising in the design and on-site manufacture of exquisite hand - made jewellery, we can bring any jewellery desire from fantasy to life. Sinclairs also exclusivley stocks the premium cut Hearts Desirediamond along with Argyle Pink other coloured diamonds.