Your Trusted Partners When Selling Your Jewellery.
Private appointments with Master Diamantaires
at Sydney’s leading jewellery, diamond and gold
specialists.
Private appointments with Master Diamantaires at Sydney’s leading jewellery, diamond and gold specialists.
SAME-DAY PAYMENTS
Watch each piece being assessed and
understand how your offer is formed
Watch each piece being assessed and
understand how your offer is formed
Since 1965, the Miller family has built multi-generational expertise across the diamond and jewellery industry, with experience spanning rough stones, cutting, polishing, grading, valuing, fine jewellery, gold, wholesale, retail and final sale. Helping pioneer the industry in Australia, the Miller family introduced the country’s first GIA-certified diamond offerings in the late 1990s.
Our experience extends across major international diamond and jewellery markets, including Australia, Antwerp, Ramat Gan, Mumbai, Johannesburg and Hong Kong, providing a practical understanding of both the technical qualities of a piece and the commercial realities that shape its value.
Craig Miller
Founder
Lonn Miller
Founder
60+ Years of Generational Gemology Expertise.
President
Craig Miller
Aust. Representative
Craig Miller
Brand Founders
Craig & Lonn Miller
Former NSW Board
Lonn Miller
Former NSW GM
Lonn Miller
Licensed
Miller Hirsch
President
Craig Miller
Aust. Representative
Craig Miller
Brand Founders
Craig & Lonn Miller
Former NSW Board
Lonn Miller
Former NSW GM
Lonn Miller
Licensed
Miller Hirsch
Craig Miller
Founder
Lonn Miller
Founder
60+ Years of Generational Gemology Expertise.
PRIVATE
APPOINTMENTS
licensed second
hand dealer
SAME DAY
PAYMENTS
No obligation
offers
GIA iD100®
DIAMOND TESTING
No obligation
offers
Selling your Jewellery with Miller Hirsch
1
STEP 1 of 5
Book an appointment
Book your in-office appointment with our Master Diamantaires to appraise your items for sale. Booking in a scheduled appointment with us ensures we can prioritise your privacy as well as give your valuable items the careful attention and respect they require.
2
STEP 2 of 5
Professional assessment by Miller Hirsch
We invite you to witness your items being assessed piece by piece. We prioritise absolute transparency during the assessment process and ensure you never lose sight of your valuables at any point of the process.
3
STEP 3 of 5
Metal assessment and weighing
Each piece is evaluated, drawing on our 60+ years of combined expertise in precious metals.
Gold is tested using our Thermo Scientific Niton XL2100 XRF (X-Ray Fluorescence) analyser, which determines the precise carat purity of the gold out of 24 parts, along with every other metal present. The process is completely non-destructive and delivers an accurate result on the spot.
Once craftsmanship and metal purity have all been established, the piece is weighed.
4
STEP 4 of 5
Diamond/Gem assessment and weighing
Diamonds are screened using our GIA iD100, a professional fluorescence spectrometer developed by the Gemological Institute of America. It analyses each stone's internal structure to determine definitively whether it is a natural diamond, a laboratory-grown diamond, or a simulant - delivering a result in under two seconds. Each gem is assessed by the internationally recognised 4C grading standards; cut, colour, clarity, and carat.
Where an initial screening flags a stone for further review, our JTR Reveal Diamond Detector 2S independently validates the result. Approved by the Natural Diamond Council's ASSURE 2.0 programme, it analyses each stone's fluorescence and phosphorescence response under UV light to confirm the finding with complete certainty.
Once craftsmanship and stone origin have all been established, the piece is weighed. We assess cut, clarity, and design so you get pricing based on real demand, not rough estimates.
5
STEP 5 of 5
Offer made, payment made instantly.
With the metal and diamond/gems now accurately analysed, every factor is combined to produce a precise, transparent appraisal and offer price maximised by the accuracy of our valuation process and experience.
If you wish to proceed with the sale, a statutory one-pager is completed by the client as well as ID verification. Payment is then instantly transferred into your chosen bank account where you can verify receipt of funds.
Selling your Jewellery
with Miller Hirsch
1
STEP 1 of 5
Book an appointment
Book your in-office appointment with our Master Diamantaires to appraise your items for sale. Booking in a scheduled appointment with us ensures we can prioritise your privacy as well as give your valuable items the careful attention and respect they require.
2
STEP 2 of 5
Professional assessment by Miller Hirsch
We invite you to witness your items being assessed piece by piece. We prioritise absolute transparency during the assessment process and ensure you never lose sight of your valuables at any point of the process.
3
STEP 3 of 5
Metal assessment and weighing
Each piece is evaluated, drawing on our 60+ years of combined expertise in precious metals.
Gold is tested using our Thermo Scientific Niton XL2100 XRF (X-Ray Fluorescence) analyser, which determines the precise carat purity of the gold out of 24 parts, along with every other metal present. The process is completely non-destructive and delivers an accurate result on the spot.
Once craftsmanship and metal purity have all been established, the piece is weighed.
4
STEP 4 of 5
Diamond/Gem assessment and weighing
Diamonds are screened using our GIA iD100, a professional fluorescence spectrometer developed by the Gemological Institute of America. It analyses each stone's internal structure to determine definitively whether it is a natural diamond, a laboratory-grown diamond, or a simulant - delivering a result in under two seconds. Each gem is assessed by the internationally recognised 4C grading standards; cut, colour, clarity, and carat.
Where an initial screening flags a stone for further review, our JTR Reveal Diamond Detector 2S independently validates the result. Approved by the Natural Diamond Council's ASSURE 2.0 programme, it analyses each stone's fluorescence and phosphorescence response under UV light to confirm the finding with complete certainty.
Once craftsmanship and stone origin have all been established, the piece is weighed. We assess cut, clarity, and design so you get pricing based on real demand, not rough estimates.
5
STEP 5 of 5
Offer made, payment made instantly.
With the metal and diamond/gems now accurately analysed, every factor is combined to produce a precise, transparent appraisal and offer price maximised by the accuracy of our valuation process and experience.
If you wish to proceed with the sale, a statutory one-pager is completed by the client as well as ID verification. Payment is then instantly transferred into your chosen bank account where you can verify receipt of funds.
Selling your branded pieces with Miller Hirsch
We can identify when a piece deserves a brand premium versus
generic gold jewellery valued only by weight.
We can identify when a piece deserves a brand premium versus generic gold jewellery valued only by weight.
Images top: Craig and Lonn in the Miller Hirsch office, bottom left: rough diamonds,
bottom right: Craig Miller sorting rough diamonds, India.
OUR MISSION
Helping you achieve the best
possible outcome for your
collection
We have built a reputation on integrity and experience, offering bespoke, piece-by-piece expert valuation in a respectful, transparent process.
Every piece is considered through the lens of a team that understands how jewellery is made, how diamonds are graded, how gold is valued and how the market actually buys. Our experience and industry relationships help ensure your collection is considered not just for what it is, but for where its strongest commercial value may sit. This is how we unlock the highest possible sale for our customers.
The offers we make are obligation-free, you can choose to accept or say no at any time. Your peace of mind is paramount to our success.
OUR MISSION
Helping you achieve the best
possible outcome for your
collection
We have built a reputation on integrity and experience, offering bespoke, piece-by-piece expert valuation in a respectful, transparent process.
Every piece is considered through the lens of a team that understands how jewellery is made, how diamonds are graded, how gold is valued and how the market actually buys. Our experience and industry relationships help ensure your collection is considered not just for what it is, but for where its strongest commercial value may sit. This is how we unlock the highest possible sale for our customers.
The offers we make are obligation-free, you can choose to accept or say no at any time. Your peace of mind is paramount to our success.
Images top: Craig and Lonn in the Miller Hirsch office, bottom left: rough diamonds, bottom right: Craig Miller sorting rough diamonds, India.
Hear from some of our customers
I had an amazingly efficient and pleasant experience disposing of some old jewellery. The process is transparent in that each piece is photographed, and analysed with cutting edge techniques giving an immediate result. It has taken a load off my mind to know I received the best offer and it was handled so knowledgeably and professionally.
– Derek W
Had an excellent experience today selling my gold to Craig and Lonn. They were highly professional and made the entire process smooth and straightforward, especially as it was my first time selling gold. They were very trustworthy and I appreciated being guided through each step of the process, with clear explanations of the details behind each piece of jewellery.
– Salvatore Amato
Really happy with my experience with Craig! He took the time to explain how they test and value the jewellery, so I felt comfortable and informed the whole time. The process was smooth, fair, and trustworthy. Plus, he made sure the payment was sorted before I left. So easy and stress-free! Highly recommended! ☺️
– Molly Santos
They helped me get the best possible price for some jewellery I needed to sell, and the whole process was smooth and comfortable from start to finish.
Both dealers were very friendly and took the time to explain every step of the process, which made me feel informed and involved the entire way through. Their professionalism and transparency really stood out.
If you’ve inherited gold or jewellery and want to make sure you’re getting a fair price in a safe, professional environment, I would definitely recommend Miller Hirsch.
– Sarah Davis
I recently sold some jewellery to Craig and Lonn and had a great experience from start to finish. They were professional, honest, and made the whole process smooth and stress free I really appreciated how straightforward and fair everything was. Highly recommend their service.
– Jordan Singh
My mum and I had a great experience with Craig from Miller Hirsch. Craig explained everything about the process ahead of our appointment and was able to get through our gold assessment timely considering the number of pieces we had. This process was all done in a completely transparent way which was interesting to watch and learn. Craig made us feel comfortable and ensured we were happy with the outcome. We highly recommend Miller Hirsch!
– Paula Schoenmaker
Book an appointment
Uncover what your jewellery collection is truly worth today.
Have a question about selling your jewellery, diamonds or gold?
Our commitment to the next generation
– Supporting the Young Diamantaires.
Our commitment to the next generation – Supporting the Young Diamantaires.
Launched in 2016, the Young Diamantaires is a global membership organisation that unites and empowers the next generation of jewellery and diamond industry professionals under the mentorship of its members. Members actively work to shape the future of the trade through meaningful industry initiatives and cultivating equal opportunity around the world.
Pictured: A small group of Diamantaires attended The Renaissance School project in South Africa. The project managed by the DeBeers Foundation, involves raising US$350,000 to build two additional structures that will create both a library and a kitchen for the 1200 students at the school.
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Address
1/795 New South Head Road, Rose Bay NSW 2029
Phone
(02) 9053 6755
Second Hand Dealers Licence No: 2PS30288
ABN 44 691 903 616
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