Diamonds by Design At Diamonds by Design we custom design and create fine jewellery just for you from diamonds, opals, gems and pearls ethically sourced from conflict-free zones. For 28 years our bespoke jewellery, diamond engagement rings has delighted Sydney's discerning buyers.
Level 1, 235 Clarence Street, Sydney NSW 2000 Australia

61 2 92994251

Member of:

Jewellery Designer Sydney – Diamond Specialist – Master Jeweller – Valuations

Modern Jewellery Design & Appraisals in Sydney

sydney jewellery designer sydney - master jeweller and diamond specialist - modern jewellery designers SydneyAt Diamonds by Design we have specialised in the sale of fine jewellery and bespoke jewellery design for almost four decades. Selling jewellery is not only our specialisation, but also our passion. We value each customer as much as the last, and ensure that every piece is delivered according to the customer’s expectations. Whether you’re searching for the perfect engagement ring or a one-of-a-kind gift for your loved one, you can be assured integrity and satisfaction at Diamonds by Design.

Owner, Karen Lindley offers a custom design service so you can have a piece that is unique and personal to you. You can also choose from some of the finest jewellery pieces from around the world, which are available in our Sydney showroom.

The Design Process

with Karen Lindley, Jewellery Designer in Sydney

‘To me your piece of jewellery has to not only feel comfortable, look great and be reasonably priced – it has to pass my benchmark of excellence and look right to my trained eye. Over 40 years of experience as a gemmologist has taught me to trust my judgement and I am seldom wrong!’ – Karen Lindley

Karen Lindley’s passion for jewellery is evident in each and every piece.

When you want a specific jewellery piece but you can’t seem to find anything that fits your dream, Karen has the expertise and creativity to bring your dreams to life.

Karen understands we all have our own unique style, and ensures that your piece reflects this.

When you choose Karen Lindley as your jewellery designer, you can be assured of superior quality and exceptional service.

Main services

Jewellery Design

Engagement rings

At Diamonds by Design, we specialise in creating custom-made engagement rings. Engagement rings are truly symbolic of your love and commitment to each other. Karen Lindley will put her passion for jewellery and years of experience to creating a ring just like the one you’ve dreamed of.

Jewellery Design

Wedding rings

We understand the importance of matching your wedding ring perfectly with your engagement ring. Karen takes immense pride in each jewellery piece – striving for perfection and attending to the tiniest details.

Jewellery Design

Custom jewellery

Why not get your dream jewellery piece created in the heart of Sydney at Diamonds by Design? A custom made jewellery piece is unique and personal. Whether you’re after jewellery with exquisite diamonds or prized coloured gemstones, for yourself or for a loved one, simple or more detailed, award winning designer Karen Lindley has a lifetime of experience to create a piece you will love.

Jewellery Design

Jewellery restoration

Diamonds by Design specialises in restoring jewellery. We are just as happy to restore an heirloom or generational piece as we are to create a new one. We can use one piece to create multiple pieces, or multiple pieces to create one piece – Whether you have an idea already conceived or need some help designing it, Karen will proudly put her years of experience into creating something special.

Other Services

As well as bespoke jewellery pieces, Diamonds by Design also offers pre-purchase advice, estate and family law valuations, probation valuations and appraisals and clock and watch repairs. To view our full range of services, visit our services page.


We believe in delivering the best value available, which is why we work closely with our sources to ensure that you get the best diamond, gem or piece of jewellery for your money. Whether our clients are looking for a simple but stunning engagement ring, or a more complex piece, we promise the best value every time.


In the 40 years that our Sydney-based company has been in existence, we have gained a reputation for always conducting business honestly. We pride ourselves on our integrity, which is why we are always careful to ensure that all our jewellery and gems come from traceable sources.


At Diamonds by Design we strive to check the source of all our gemstones and will not purchase stones that do not have provenance that we feel comfortable with. We encourage customers to trade in their gold, precious metals and gemstones or polish them for further wear. We strive to recycle as much as possible and leave a minimal footprint.

Social Responsibility

Diamonds by Design assists several charities and contributes financially to the Purple Angel Society, of which Karen Lindley Pty Ltd is the Trustee. The Purple Angel Society is a twisters charity which donates to the homeless and destitute, and assists young people to achieve their goals where they are restricted by financial constraints.

Why Choose Diamonds by Design?


    Karen Lindley, gemmologist and owner of Diamonds by Design, is an award-winning designer who prides herself in delivering exemplary customer service and stops at nothing to ensure that the customer is 100 per cent satisfied.


    Diamonds by Design is happy to offer free advice to clients if they are uncertain exactly what they want.


    Your jewellery design will be completed by a qualified, respected and registered gemmologist.


    Every client of Diamonds by Design is guaranteed superior quality and personal service.


    We value all our customers and each enquiry is in important to us, which is why we always respond promptly to queries.


    Our company receives hundreds of written testimonials from happy clients, a few of which are shown on the website.


    We are a trusted local, family-run business and have worked from the same rooms for the last 35 years.

Find out more

To find out more about engagement rings and wedding rings, jewellery design, purchasing diamonds, gems or any of our other services, fill out our online form for free, no-obligation advice.

What our customers say ?