In a review of a 2015 exhibition of Walker's work, art critic Warren Feeney wrote: Over the past 20 years, Walker has played a critical role in the development of contemporary jewellery in New Zealand and internationally, making work that confronts familiar perceptions about what a precious object might be.
A recent work by Walker made of pieces of pounamu was included as an illustration in New Zealand historian Barbara Brookes' A History of New Zealand Women as an example of how contemporary New Zealand jewellery reflects a sense of place [REF].