Our Guarantee

Our history is over 25 years long, and in that time we have developed strong relationships within the gem and jewellery industry. Our reputation has grown together with our customers and we are well known for our quality, attention to detail and artisanship.

Ramzi & Co. fine jewellery is made to premium standards and with only the highest quality materials because we value the task of creating a treasure for you to cherish your entire life.

Every diamond purchase comes complete with an Independent Lab Certificate from GIA, IGI, or HRD for authentication.

“The diamonds sold at Ramzi & Co. have been purchased from legitimate sources not involved in funding conflict and in compliance with United Nations resolutions. Ramzi & Co. hereby guarantees that these diamonds are conflict-free, based on personal knowledge and/or written guarantees provided by the supplier of these diamonds.”

Authenticity & Quality Assurance

Ramzi & Co. guarantees that all fine diamonds, coloured gemstones, and platinum and gold jewellery sold are genuine and authentic. We also guarantee that the quality and value of the pieces shipped to you will match the quality and value represented at the time of your purchase.

Strict quality control is the cornerstone of our business and we apply it to every step of the acquisition and production process. Prior to shipment, all pieces undergo strict inspection by our team of experts.

Ramzi & Co. coloured gemstones and diamonds are conflict-free, and our jewellery is ethically created.

British \| Irish Australian Size	US \| Canada Size	Inside Diameter (inches)	Inside Diameter (mm)	Inside Circumference (inches)	Inside Circumference (mm)
F 1/2	3	0.554	14.1	1.74	44.2
G	3.25	0.562	14.3	1.765	44.8
G 1/2	3.5	0.57	14.5	1.79	45.5
H	3.75	0.578	14.7	1.815	46.1
H 1/2	4	0.586	14.9	1.84	46.7
I	4.25	0.594	15.1	1.865	47.4
I 1/2	4.5	0.602	15.3	1.89	48
J	4.75	0.61	15.5	1.915	48.7
J 1/2	5	0.618	15.7	1.941	49.3
K	5.25	0.626	15.9	1.966	49.9
K 1/2	5.5	0.634	16.1	1.991	50.6
L	5.75	0.642	16.3	2.016	51.2
L 1/2	6	0.65	16.5	2.041	51.8
M	6.25	0.658	16.7	2.066	52.5
M 1/2	6.5	0.666	16.9	2.091	53.1
N	6.75	0.674	17.1	2.116	53.8
N 1/2	7	0.682	17.3	2.141	54.4
O	7.25	0.69	17.5	2.167	55
O 1/2	7.5	0.698	17.7	2.192	55.7
P	7.75	0.706	17.9	2.217	56.3
P 1/2	8	0.714	18.1	2.242	56.9
Q	8.25	0.722	18.3	2.267	57.6
Q 1/2	8.5	0.73	18.5	2.292	58.2
R	8.75	0.738	18.7	2.317	58.9
R 1/2	9	0.746	18.9	2.342	59.5
S	9.25	0.754	19.2	2.368	60.1
S 1/2	9.5	0.762	19.4	2.393	60.8
T	9.75	0.77	19.6	2.418	61.4
T 1/2	10	0.781	19.8	2.443	62.1
U	10.25	0.788	20	2.468	62.7
U 1/2	10.5	0.794	20.2	2.493	63.3
V	10.75	0.802	20.4	2.518	64
V 1/2	11	0.81	20.6	2.543	64.6
W	11.25	0.818	20.8	2.569	65.2
W 1/2	11.5	0.826	21	2.594	65.9
X	11.75	0.834	21.2	2.619	66.5
X 1/2	12	0.842	21.4	2.644	67.2
Y	12.25	0.85	21.6	2.669	67.8
Y 1/2	12.5	0.858	21.8	2.694	68.4
Z	12.75	0.866	22	2.719	69.1
Z+1	13.25	0.882	22.4	2.769	70.3

Our Guarantee

Authenticity & Quality Assurance

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