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About Diman Co
Diman Co Jewellers is a Kogarah family jewellery business representing three generations of the Heszberger family. The company traces its jewellery tradition to 1966 and combines design, diamond and gemstone sourcing with hands-on manufacturing, giving customers access to a family team whose roles cover both the creative and technical sides of the trade.
Susan Heszberger is closely associated with design and the visual direction of pieces, while Steve Junior oversees workshop and manufacturing work. Steve Senior remains connected with the business and its quality standards, continuing the experience developed through decades of wholesaling and retailing.
The business works with diamonds and precious gemstones sourced through international suppliers and focuses on fine jewellery made to a high standard. Custom design is a natural part of this model because the family can manage design ideas, stone selection and manufacture within the same business rather than separating those stages.
Diman Co also carries finished diamond and gold jewellery for customers who prefer to choose a completed piece. Its Kogarah store gives local customers a physical point of contact for discussing significant purchases and comparing options in person.
For customers looking for a smaller independent jeweller, Diman Co’s main strength is continuity across generations and direct involvement in making. The business is not simply a sales outlet for finished jewellery: design, workshop oversight and sourcing knowledge remain part of the family’s day-to-day role, helping clients create or choose pieces intended to last beyond a single occasion.
Services
Services explained
Below is an overview of the jewellery services offered by this store.
Jewellink Reviews
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Google Reviews
4.6 ★
(15 Google reviews)
View on Google
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Georgina Mirabito 5 ★ 2024-01-08The team at Diman Co were absolutely amazing. They created my dream engagement ring and wedding band. It was a stress free experience, the process did not take long at all and the outcome was more beautiful than I could have ever dreamed of.nnThank you so much for creating jewellery that is going to last a life time.nnGeorgina
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Stephanie Grech 5 ★ 2023-04-04Iu2019ve purchased many things from Diman Co, earrings, bracelets and necklaces (and a gift or two from my partner), I wear my jewellery in the shower, pool and beach water and they survived. Obviously my older pieces have needed a polish (some go back 5 years!) but, without a doubt I always recommend this place to purchase jewellery and for repairs! The ladies at front of house are always smiling And helpful with finding the perfect new addition.nn5/5 for service and jewellery
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Domenica Malec 5 ★ 2018-12-19Amazing jewellery we have been long time customers, Susan helped me design my engagement ring which I love along with my eternity bands that have been added over the years. Great service by Susan and Mira. Highly recommend them.
Contact Details
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Phone
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Email
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Website
Opening Hours
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Monday
8:30 am - 5:00 pm
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Tuesday
8:30 am - 5:00 pm
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Wednesday
8:30 am - 5:00 pm
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Thursday
8:30 am - 5:00 pm
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Friday
8:30 am - 5:00 pm
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Saturday
8:45 am - 1:30 pm
Location
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Shop2/86-88 Railway Parade, Kogarah NSW 2217
Contact
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