Dear Sevan, We’d like to take a moment to send our sincere thanks for the truly personalized experience you created for us. I was so impressed with the design you and Martin came up with for my engagement ring! It was an incredible surprise and the custom elements of the ring matched my personality perfectly. Working with you to pick out our wedding bands was equally exciting and we love that we finally get to wear them every day! When it comes to customer service, you went above and beyond… We really felt like we got the “friends & family” treatment (rare, given that Martin stumbled across your site via a Google search). To anyone thinking about doing business with Sevan: we experienced honestly mixed with a genuine attention to detail and commitment to making the perfect piece(es) of jewelry to last a lifetime. We couldn’t be happier. Sending so much gratitude, Stephanie & Martin

Stephanie Ross

Sevan was absolutely amazing to deal with. He found the perfect diamond and complemented it with an incredible design. I live in Ottawa and his store is in Toronto, and I never even needed to make the trip. We exchanged emails, designs, and phone calls in order to complete my request and my ring is even more beautiful than I could have imagined. I would absolutely recommend him to anybody and everybody I know. Thank you Sevan for my perfect dream ring..

Vanessa Sanschagrin

After having numerous poor experiences in retail stores and not finding what we wanted, we ended up in Sevan’s office. He was professional and could almost read minds as to what we were looking for. The finished product was perfect, great quality, fast service and had much more value than retail purchases. I would highly recommend Sevan for any jewellery purchase. He is the besT!


We had an amazing experience with Sevan! We had to have our wedding rings designed on short notice and Sevan delivered on time and the rings turned out absolutely beautiful. The experience at his studio is pleasant and he is very patient. He provides a lot of valuable information with regards to style, and type of metals that would be optimal for certain designs. Sevan’s experience shows. He is a true professional and knows his art form in out. We would recommend Design by Sevan to anyone looking to get a truly personalized engagement ring. Thank you Sevan.

Anna Gondzik

Buying a ring from AST was a fantastic experience!! Can’t say enough nice things about Sevan. He runs an honest, pressure free business and has become my go to guy for all my jewelry needs.

If you’re looking for a diamond ring for that special someone Sevan will make you the ring of your dreams for a fraction of the cost of the big guys… and treat you with respect along the way.

Could not be happier!! Highly recommended!!

Dan Pifs

My girlfriend and I (now fiancée) were referred to Sevan at AST Jewellery by a friend of ours.

Taking a look at his site we found something we wanted (she wanted a coloured stone and we landed on sapphire) to which we promptly set up a time to go meet him and try it on!

Not only was he quick to respond but he made us feel very comfortable with our flurry of questions and took the time to explain various cuts, clarity, etc. This man knows his craft very well and we could tell how passionate he is about it.

We figured out what we wanted and moved forward. Sevan takes you along every step of the way, is honest, assuring, kind and simply a genuinely nice person. When making a big purchase and a big decision like getting engaged it just amplifies the excitement when the person you’re buying the ring from is so fantastic.

A brilliant experience. Highly recommended and we’ll be back for the wedding bands and be referring any of our friends to him.

Thanks Sevan!

Justin Cumby

I was referred to Sevan and AST Jewellery by a friend. Prior to meeting Sevan, I met many jewellers and saw many diamonds and rings. Sevan was very passionate, straight forward, and honest about everything. More importantly he was more than willing to work with me and my vision. He was not only able to teach me more about diamonds but he was able to help me find one that was perfect. I have since proposed and my fiancé is in love with the ring. I will be going back to Sevan for the wedding bands and recommending him and AST Jewellery to all my friends and family.

Kadir Debello

Sevan is the man! I had a very stressful experience looking for a diamond engagement ring before finding Sevan at AST Jewellery. He is a very likable and easy to speak to and gave me great advice through the whole process of designing a custom ring. He seemed more interested in creating a tasteful ring rather then selling me the largest diamond I could afford which was really appreciated. Also the rings he has on display are very well designed and crafted which left me confident I was in good hands. I had some ideas about creating a custom ring and he was able to take them and create a ring that went above and beyond my expectations. I am very pleased with the service and the ring I got at AST Jewellery and will definitely be returning to get wedding bands done or any other custom jewellery in the future.

Nate Fisher

I can’t recommend A.S.T Jewellery enough. Sevan is extremely knowledgeable, patient and friendly. He explained all of my options in terms of diamonds and left the decision entirely up to me while offering his expert opinion on each stone we looked at.
Sevan designed the ring exactly how I wanted and the finished product is beautiful and my fiance loved it. I received a 3D mockup of how the ring would look in advance of Sevan making it. A very nice touch.
Please do yourself a favor and visit AST rather than a store. The service you receive will be far and above what you will experience there and you will receive much better value for your money

Mark Dunne

A Google search for independent jewellers produced A.S.T. Jewellery along with a few others in Toronto. I was keen on ordering my engagement ring from someone who offered fair pricing, was honest, and produced quality craftsmanship. Upon meeting Sevan Tosun, I was impressed with his knowledge of diamonds, his competitive pricing and best value and quality as per my budget, and his generosity with his time. I then researched and met 5 other jewellers to make sure that Sevan was the real deal. He not only charged fairly but his craftsmanship was also the best. Sevan was wonderful in giving me very specific information about the stone including GIA certification etc., 3D imaging and mould of the ring I ordered. My fiancé, who was living in another city at that time gave me the freedom to choose any design within a budget and was more than pleased at the outcome of my beautiful and classical ring that was made so promptly. Sevan takes great pride in his craftsmanship and diamonds and we will most certainly have our wedding bands made at A.S.T. I haven’t gone in yet for resizing or any maintenance, but I imagine when that time comes, Sevan will be just as gracious, I’ll keep you posted. In the meantime, I will just smile widely and enjoy this exquisite ring that my wonderful fiancé has so lovingly given to me. Best wishes, Deb

Deb Mesh


Thank you for the kind wishes but more importantly, thank you for your wonderful services you provided me. Your work has definitely not gone unnoticed. My ring is very nice and I’ve received many compliements on it.

All the best and I look forward to doing business with you again…

Dustin Newberry

Hi Sevan,

I want to start off by saying,THANK YOU SOOOOOO MUCH FOR OUR BEAUTIFUL RINGS THAY ARE EVEN MORE BEAUTIFUL THAN I ORIGINALLY THOUGHT! They are stunning! I looooooooooooooove them!!you did a wonderful job!!


Dear Sevan,

Thank you so much for that beautiful necklace which you gave me today. It is really breathtaking. I am planning on giving it to my daughter on her 21st birthday. She always wanted a diamond necklace…..and now she will have one. What a fantastic prize to win from Mix 99.9!


Hi Sevan!

It’s Lyja, you know, the one who fell in love with the ring last night. I’m even more sure than I was last night, it’s the ring for me!!! I was so happy to see it on your website!! Im sure lots of people will fall in love with your gorgeous jewellery.


Hi Sevan!

Just wanted to let you know that everything went amazingly well with my proposal and engagement etc… She loved the ring, as well as anyone else who has seen it. Everyone comments about the beautiful design and craftsmanship. Thank you very much for making the whole process so smooth.

Mark Rawlinson