Tomorrow's Heirlooms

Your legacy, thoughtfully designed, meticulously made, well treasured

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Sin is a Toronto-based jewellery designer, goldsmith and gemologist, who specializes in custom fine jewellery. She began her jewellery journey in 2004, learning technical skills in a 3-year Jewellery Arts program. In 2010, Sin's namesake business, Sin Kim Jewellery, was born. We strive to be environmentally and socially conscious in the purchase of our materials and the creation of our products.  Each piece is carefully crafted using only precious, ethically sourced gems, from trusted suppliers. Our metal is often recycled and purchased from local refineries and casters, who share our views on sustainability and push for positive impact.  Jewellery should be worn and loved and created so that it has quality and excellence, along with handmade charm. 

More than just a ring

We believe in the history and romance that jewellery has always signified. In a world of fast fashion, we wish to be part of the antidote. Our jewellery is created to be timeless, treasured, future heirlooms. We put a lot of heart into each hand finished piece. They will represent cherished memories to be shared and passed down for generations to come. Custom jewellery made by Sin Kim is locally designed, and produced, specifically for its wearer. Sin works closely with her clients to interpret their stories, memories, messages ,and personal preferences. She incorporates them into her designs, as small thoughtful details. This process ensures that the rings are not just beautiful and well made, but personalised and heart felt.

The ring is absolutely stunning. It is even more beautiful than the renderings. The sizing is perfect, it feels just right on my finger. The box is also very cool. Thank you so much for all of your hard work on this ring. I will wear it proudly.


I wanted to personally thank you for bringing this ring to life. I am absolutely in love with it and every detail. Your craftsmanship and guidance has awed literally every single person that has seen it - EVERYONE is floored by it. My mom wanted to steal it.... I cannot thank you enough for the hours and patience you put in and I can't express my love for it enough with words. Also if you didn't know I SAID YES!


Thank you so much for the great job you did on the ring :) She absolutely loved it, it fit perfectly, and it went sooo well with her dress! If I need any other rings, you're my go-to girl


From Concept to Completion

Sin will be with you every step of the way.  Unlike other online stores, Sin Kim Jewellery produces all of their pieces on a made to order bases, with individually designed waxes, for each and every item.  This means that each order can be modified and customised.  Weather you are searching for that special gem, looking to breathe life into some old treasures, if you have an idea that you would like to see designed/rendered, we are here to help.   To get started, send us your vision boards, pinterest boards, budget, and ideas, and we'll point you in the right direction. 

Sin is a certified Gemmologist.  Send her an email for help picking your centre stone, or visit her GEM VAULT to see what she has in her private collection. 

Our CAD files are created in house, by Sin herself, which means there are no outsourcing, which increases time and cost.

Begin your custom design process

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