The Leederville jeweller " an industry team leader for the campaign that raises money for breast care nurses " used two amethyst gems and diamonds to create the pendant, worth about $6000.
Mr Milne said getting the edges of the pendant perfect was the most challenging part of the project.
He said a simple but chunky chain would complete the hour glass-shaped pendant, made with help from Community Newspaper Group.
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READ NOWThe pendant is on display at Rohan Jewellers, Oxford Street, Leederville.
Breast Cancer Care WA (BCCWA) founder Ros Worthington officially launched the campaign, which encourages employees at workplaces across the State to donate an hour's wage to the cause, on International Women's Day.
"Increased funding thanks to the Buying Time campaign will help us grow the number of people provided with care, and help us support more families and carers affected by breast cancer," BCCWA chief executive Zoe McAlpine said.
"Breast Cancer Care WA needs to raise $2 million per year to fund its current level of service," Ms McAlpine said.
Donations will be shared between BCCWA and the McGrath Foundation.
Visit http://buyingtime.|gofundraise.com.au.