Leiser & Co. Reviews 

22
TrustScore 4.5 out of 5

4.6

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Rated 5 out of 5 stars

I came here after visiting other jewelers as I wanted to sell my old engagement ring. Olivier was absolutely charming and more importantly gave me a really good price. Highly recommend Leiser and Co... See more

Rated 5 out of 5 stars

I am writing this review to say a huge thank you for all your help and support in selling my diamond. I couldn’t recommend this company more highly. They were professional, informative and ef... See more

Rated 5 out of 5 stars

A really great interaction. After an afternoon wondering around various buyers Olivier was a breath of fresh air - helpful, fair and direct. I'd certainly make him my first port of call in future.

Rated 5 out of 5 stars

Elite service - went to get a quote on an engagement ring, and was so pleased with the quality and price of the diamonds I saw that I ended up buying the perfect diamond and designed my engagement rin... See more

Company details

  1. Diamond Buyer
  2. Diamond Dealer
  3. Jeweler
  4. Jewelry Appraiser
  5. Jewelry Buyer
  6. Wholesale Jeweler

Written by the company

Leiser & Co is a diamond wholesale company located in Central London. Specialized in both buying and selling of diamonds in London, we are able to offer both competitives prices and payouts. Certificates we specialize in are GIA, HRD and IGI.


Contact info

4.6

Excellent

TrustScore 4.5 out of 5

22 reviews

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4.6

All reviews

(22)

2 reviews in the last 12 months

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Rated 5 out of 5 stars

Excellent company

I came here after visiting other jewelers as I wanted to sell my old engagement ring. Olivier was absolutely charming and more importantly gave me a really good price. Highly recommend Leiser and Co

29 January 2026
Unprompted review
Rated 5 out of 5 stars

Was looking to sell a diamond

Was looking to sell a diamond, Olivier responded very quickly and politely. Once the stone was examined we agreed on the price and it was paid straight away. Was very happy with the experience. Quick, polite and professional.

15 September 2022
Unprompted review
Rated 5 out of 5 stars

Engagement Ring

Olivier from Leiser & Co sourced the diamond to my specification and designed the ring to hold it. I love my ring and had excellent service and communication throughout the process. They will be making my wedding ring now too!

25 July 2022
Unprompted review
Rated 5 out of 5 stars

A really great interaction

A really great interaction. After an afternoon wondering around various buyers Olivier was a breath of fresh air - helpful, fair and direct. I'd certainly make him my first port of call in future.

12 April 2022
Unprompted review
Rated 5 out of 5 stars

Professional, courteous and knowledgable.

Professional, courteous, and knowledgable- would highly recommend Leiser & Co. Dealt with Olivier when selling my engagement ring and purchasing some new earrings. Offered the best price and the friendliest service. Money transferred on the spot. Definitely recommend.

22 December 2021
Unprompted review
Rated 5 out of 5 stars

Selling diamonds.

I contacted Leiser and Co.to sell some diamonds and spoke with Olivier who was very helpful. We agreed on a price and the money was transferred to my account within hours. A thoroughly professional and friendly service.

6 September 2021
Unprompted review
Rated 5 out of 5 stars

Recycling old jewellery made easy

Olivier at Leiser valued my jewellery, responded the same day, and I recieved the funds within 24 hours of posting the items. A totally professional service, so easy to use which made letting go of my wedding ring etc post divorce a pleasant experience!

30 July 2021
Unprompted review
Rated 5 out of 5 stars

I had my diamond ring made at Leiser…

I had my diamond ring made at Leiser and Co - they were recommended to me by a friend. I had looked at many jewellers and was not satisfied with the prices for the quality offered. The designer listened to what I wanted created exactly what I had in mind for an incredible price. I could not recommend highly enough!!

1 April 2021
Unprompted review
Rated 5 out of 5 stars

Highly recommended

I had a pair of diamond earrings that I wanted to sell for a while, and went to several different companies. I was most impressed by Leiser and Co, who offered me by far the highest price, and paid me before I walked out the door! Highly recommended.

30 March 2021
Unprompted review
Rated 5 out of 5 stars

Fab Service!

I designed and bought a beautiful bespoke engagement ring with Leiser & Co. They made it a thoroughly enjoyable experience. The ring came out exactly as I was hoping for, the craftsmanship and diamond quality are great. Most importantly… She said yes!

19 March 2021
Unprompted review
Rated 5 out of 5 stars

Diamond earrings at Leiser & co

I bought diamond earrings at Leiser & co, I love them so much I wear them every day! I highly recommend them for their professionalism, patience & understanding of the clients need! Thank you for the lovely service

12 March 2021
Unprompted review
Rated 5 out of 5 stars

Elite service

Elite service - went to get a quote on an engagement ring, and was so pleased with the quality and price of the diamonds I saw that I ended up buying the perfect diamond and designed my engagement ring that day. Highly recommend, but know what you want when you go in there so they can show you the best options. Thank you Olivier!

11 August 2020
Unprompted review
Rated 5 out of 5 stars

Fantastic experience

I am writing this review to say a huge thank you for all your help and support in selling my diamond.

I couldn’t recommend this company more highly. They were professional, informative and efficient every step of the way and kept me informed throughout.

I would definitely use them again for their sound knowledge and competitive prices.

Many thanks for a fantastic service!!
Aline

17 July 2020
Unprompted review
Rated 5 out of 5 stars

Fantastic

What can I say...I am extremely satisfied with my experience with Leiser & Co. - not only did I find the best price for a diamond in Hatton Garden, I was thoroughly impressed by the personable service and level of professionalism of the dealers.

15 July 2020
Unprompted review

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