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Buy Diamonds in London, Hatton Garden

You are invited to contact us for personally taylored services. We sell diamonds of several different certificate types in our London office. The diamond shapes we specialize in are Round Brilliant, Emerald, Cushion, Pear, Heart, Princess, Marquise, Radiant, Asscher and Oval cuts. Both owners come from families of diamond dealers and have amassed several generations of expertise in the field.

Why Choose Leiser & Co?

We are able to sell to our clients for lower prices because we are wholesalers, so you would be buying at prices a diamond dealer pays when he buys diamonds. We pride ourselves in being able to offer our clients the ability to offer many different shapes, sizes and colors at prices that are very hard to match to clients when they buy diamonds. London is a huge hub for this sector, yet we are able to outperform our competitors, especially when it comes to catering to requirements including specific stones.

Specialized in Bespoke Engagement Rings

We are specialized in the design and creation of bespoke engagement rings. The process is very simple. First, Our clients choose the diamond they want. Then we discuss the design together and we listen to your criteria. After we have a good understanding of what you are interested in, we create a 3D render to your exact specifications. The next step is showing our clients the 3D render to confirm that you are pleased, and if not make further adjustments. Once the model is agreed upon, we have it custom made from scratch by our highly experienced goldsmith.

Certified Diamond Graders

We have a degree in diamond grading which we have received from the GIA. The GIA's diamond grading diploma is considered the most prestigious one in the world: we are certified diamond dealers and we know the trade exceptionally well.

We specialize in selling diamonds of the following certificate types: GIA, HRD, IGI. However, we are also able to supply you with diamonds of many other certificate types. Please contact us to inquire about other certificate types.

Experts in Certified Loose Diamonds

The amount of expertise both of us have gathered through the many years in the field combined with the knowledge our families have passed on to us allows us to understand the needs of our clients in every single way. We are experts in the top of our fields when the subject is loose diamonds, and we know how to cater to the London market perfectly.

Customer Satisfaction

Our company believes customer satisfaction is the most important pillar for its success, especially in modern times. The most important thing to us when we supply you with our service is to do it as professionally as possible, and to keep you as satisfied as possible. Satisfied returning customers are a crucial part of our business, and we look forward to working with you and having you smile at the quality of our service.

Other Custom Diamond Jewellery

Whatever the design is you would image, we are able to create it for you. We work directly with goldsmiths that are able to create any custom engagement ring, pendant, bracelet, necklace, earrings and wedding ring model you can imagine. When you have your custom made jewellery created by us, you can expect only the best quality and finish. We do our best and succeed very well at bringing any fine jewellery model to stunning life and having it appear as beautiful and graceful as is possible, perfect in every possible way.
left: model with diamond engagement ring, right: model with diamond earrings