Specialist knowledge
and expertise
Our appraisers are highly trained and experienced professionals with a wealth of knowledge in the field of jewellery and gemstones.
You’re in good hands with us. We’ve been valuing jewellery since 1973, with founder Graham Oliver passing on his business and knowledge to established Valuer and Gemmologist, Nicholas Tsalis
MEET OUR TEAM
Nicholas Tsalis
Nicholas is a qualified Gemmologist, Diamond Grader, and a registered member of the Jewellery Valuers Society of New Zealand. During his extensive 17-year career, Nicholas has worked for a number of jewellery manufacturers, diamond merchants, and retailers. Having worked and apprenticed under Graham Oliver for the past six years, Nicholas has developed a deep understanding and expertise in what we do, along with a robust passion for accurate and independent valuation.
Sally O’Hagan
Sally is our Valuers assistant and Pearl re-threading specialist. With a career spanning more than 30 years that began under the guidance of Graham Oliver, Sally’s experience and knowledge within the trade have allowed her to establish herself as an industry leader and a valuable member of our team.
Graham Oliver
Graham is a qualified Gemmologist, Diamond Grader, qualified Jewellery Manufacturer, and registered member of the Jewellery Valuers Society of New Zealand. With a career that spans over 50 years, Graham’s knowledge of the jewellery and gemstone industry provides our business with proven expertise and knowledge that is invaluable to our team. Today, Graham enjoys a semi-retired lifestyle that sees him pay a visit to our office on an appointment-only basis.
