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Returns & Exchange


1. Introduction
We are committed to safeguarding the privacy of our website visitors; in this policy we explain how we will treat your personal information. By using our website and agreeing to this policy, you consent to our use of cookies in accordance with the terms of this policy.

This website is hosted by Squarespace and its use is subject to Squarespace’s Terms of Use and Privacy Policy.


All transactions are integrated using Stripe and subject to Stripe’s Terms of Use and Privacy Policy.


Please see their relevant Privacy Policies, Terms of Service additionally to this policy.

2. Collecting personal information
We may collect, store and use the following kinds of personal information:

(a) Information that you provide to us for the purpose of booking an appointment.

(b) Information relating to any purchases you make of our goods (including your name, delivery address, payment address, telephone numbers, email address); All payments are processed via a third party integration called Stripe, completely secure, PCI compliant and SSL enabled. Stripe has certain data processing activities for which it acts as a data controller, and others for which it acts as a data processor. A good illustration of this dual role is when Stripe processes credit card transactions. Facilitating a transaction requires the processing of personal data, such as the cardholder’s name, credit card number, the credit card expiry date, and CVC code. The cardholder’s data is sent from the Stripe user to Stripe via the Stripe API (or by some other integration method, such as Stripe Elements). Stripe then uses the data to complete the transaction within the systems of the credit card networks, which is a function that Stripe performs as a data processor. However, Stripe also uses the data to comply with its regulatory obligations (such as Know Your Customer (“KYC”) and Anti Money Laundering (“AML”), and in this role Stripe is a data controller.

3. Using personal information
Personal information submitted to us through our website will be used for the purposes specified in this policy.

We may use your personal information to:

(a) Send you goods purchased through our website.
(b) Send statements, invoices and payment reminders to you, and collect payments from you.
(c) Send you email notifications that you have specifically requested.
(d) Send you marketing communications relating to our business which we think may be of interest to you, by post or, where you have specifically agreed to this, by email or similar technology (you can inform us at any time if you no longer require marketing communications).

We will not, without your express consent, supply your personal information to any third party for the purpose of their or any other third party’s direct marketing.

All our website financial transactions are handled through our payment services provider, Stripe. You can review the provider’s privacy policy at www.stripe.com/gb/privacy. We will share information with our payment services provider only to the extent necessary for the purposes of processing payments you make via our website, refunding such payments and dealing with complaints and queries relating to such payments and refunds.

4. Disclosing personal information
We may disclose your personal information to our employees insofar as reasonably necessary for the purposes set out in this policy.

We may disclose your personal information:

(a) To the extent that we are required to do so by law;
(b) In connection with any ongoing or prospective legal proceedings;
(c) In order to establish, exercise or defend our legal rights (including providing information to others for the purposes of fraud prevention and reducing credit risk);

Except as provided in this policy, we will not provide your personal information to third parties.

5. Security of personal information
We will take reasonable technical and organisational precautions to prevent the loss, misuse or alteration of your personal information.

All personal information you provide is stored on our website platform providers system; Squarespace.
All electronic financial transactions entered into through our website will be protected through the use of Stripe.
You acknowledge that the transmission of information over the internet is inherently insecure, and we cannot guarantee the security of data sent over the internet.

6. Cookies
Cookies are used on this website.

A cookie is a file containing an identifier (a string of letters and numbers) that is sent by a web server to a web browser and is stored by the browser. The identifier is then sent back to the server each time the browser requests a page from the server.

Cookies may be either “persistent” cookies or “session” cookies: a persistent cookie will be stored by a web browser and will remain valid until its set expiry date, unless deleted by the user before the expiry date; a session cookie, on the other hand, will expire at the end of the user session, when the web browser is closed.

Cookies do not typically contain any information that personally identifies a user, but personal information that we store about you may be linked to the information stored in and obtained from cookies.

Cookies can be used by web servers to identify and track users as they navigate different pages on a website and identify users returning to a website.

As Squarespace is hosting this website, Squarespace may use cookies which are necessary for the proper operation of its systems. If you have questions regarding this, please contact Squarespace directly via its website https://www.squarespace.com/about/contact, as Bert Frank Ltd has no control over Squarespace’s use of cookies, Squarespace’s cookie policy, or Squarespace’s privacy policy.

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Note that if you disable and/or decline cookies, it will not affect your user experience on the website.

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Isabel Pierre
Quality Guide

Isabel Pierre is uncompromising on diamonds cut quality, ensuring that all of our diamonds have optical brightness and maximum light performance.

Our diamonds quality available in two types:

Isabel Pierre
Ring Size Guide

Our ring size guide is designed especially for you to help you make the perfect decision.
Sizes are displayed in European, please see below for International Ring Size Conversion.
How to find your ring size:
1. Wrap a string, ribbon or thin strip of paper around the base of your finger.
2. Mark with a pen or a marker where the strip or the ribbon meets.
3. Use a ruler to measure your size in millimeters.
4. Look for your size in the chart below.
47 47mm 47 H 1/2 4
48 48mm 48 I 1/12 4 1/2
49 49mm 49 J 1/2 4 1/3
50 50mm 50 K 5 1/4
51 51mm 51 L 5 3/4
52 52mm 52 L 1/2 6
53 53mm 53 M 1/2 6 1/4
54 54mm 54 N 1/2 6 3/4
55 55mm 55 O 7 1/4
56 56mm 56 P 7 1/2
57 57mm 57 P 1/2 8
58 58mm 58 Q 1/2 8 1/4
59 59mm 59 R 8 1/3
60 60mm 60 S 9
61 61mm 61 S 1/2 9 1/2
62 62mm 62 T 1/2 10
63 63mm 63 U 1/2 10 1/4
64 64mm 64 V 10 3/4
65 65mm 65 W 11
66 66mm 66 W 1/2 11 1/2
67 67mm 67 X 1/2 11 3/4
68 68mm 68 Z 12 1/4
69 69mm 69 Z 1/2 12 1/2
70 70mm 70 - 13