Round One Moissonite

Gemstone Round Moissonite from $40.00 to $570.00
Shape: Round
Available Sizes:
3.0mm,3.5mm,4.0mm,4.5mm,5.0mm,5.5mm,6.0mm,6.5mm,7.0mm

Each our Round Moissanite is handpicked by a gemologist, after inspecting and comparing each stone side by side. Every moissanite comes with a graduated gemologist evaluation, guarantee of authenticity and warranty from Importex Inc.

Want to know how a 1 carat diamond appears on your hand? Just check out the diamond size chart for the precise millimeter (mm) measurement of each diamond round shape. It'll give you an idea of its size!

Round Brilliant Diamonds Size Chart (MM)

MM Size	Carat Weight
0.8	0.0025
1	0.005
1.10	0.0075
1.15	0.0067
1.25	0.01
1.3	0.01
1.5	0.015
1.75	0.02
1.8	0.025
2	0.03
2.25	0.04
2.5	0.06
2.75	0.08
3	0.11
3.25	0.14
3.5	0.17
3.75	0.21
4	0.25
4.25	0.28
4.5	0.36
4.75	0.44
5	0.46
5.25	0.56
5.5	0.66
5.75	0.76
6	0.84
6.25	0.93
6.5	1.03
6.75	1.24

Radiant Cut

MM Size	Carat Weight
4.5 x 3.5	0.34
5 x 3	0.31
6 x 3	0.41
6 x 4	.60
6.5 x 4.5	0.83
7 x 5	1.14
7.25 x 5.25	1.24
7.5 x 5.5	1.47
8 x 6	1.74
8.5 x 6.5	2.25
9 x 7	2.62
9.5 x 7.5	3.18
10 x 7	3.31

MM Size	Carat Weight
10 x 8	3.49
11 x 9	5.05
11.5 x 10	6.45
12 x 9	6.06
12 x 10	6.79
13 x 9	6.54
13 x 11	9.33
13.5 x 11.5	10.19
14 x 10	8.47
14 x 12	12.14
15 x 11	11.48
16 x 12	14.22

Oval Cut Diamonds Size Chart (MM)

Carat Weight	Min Carat Weight	Max Carat Weight	Length (approx. mm)	Width (approx. mm)
1	0.95	1.05	8.03	5.73
1 1/2	1.46	1.58	8.95	6.45

Princess Cut Diamonds Size Chart (MM)

Carat Weight	Min Carat Weight	Max Carat Weight	Length (approx. mm)	Width (approx. mm)
1/2	0.48	0.53	4.20	4.20
5/9	0.53	0.58	4.42	4.42
5/8	0.59	0.66	4.60	4.60
3/4	0.71	0.79	4.92	4.92
7/8	0.83	0.92	5.17	5.17
1	0.95	1.05	5.41	5.41
1 1/8	1.07	1.18	6.02	6.02
2	2.45	2.63	7.02	7.02
2 1/2	2.95	3.15	7.35	7.35
3	2.95	3.15	7.85	7.85

Cushion Cut Diamonds Size Chart (MM)

Carat Weight	Min Carat Weight	Max Carat Weight	Length (approx. mm)	Width (approx. mm)
1/2	0.48	0.53	4.42	4.42
5/8	0.59	0.66	4.77	4.77
3/4	0.71	0.79	5.07	5.07
7/8	0.83	0.92	5.34	5.34
1	0.95	1.05	5.58	5.58
2	1.95	2.10	7.25	7.25
2 1/2	2.45	2.63	7.80	7.80
3	2.95	3.15	8.35	8.35

Emerald Cut Diamonds Size Chart (MM)

Carat Weight	Min Carat Weight	Max Carat Weight	Length (approx. mm)	Width (approx. mm)
1	0.95	1.05	6.70	4.85
2	1.95	2.10	8.40	6.10

Heart Cut Stones Size Chart (MM)

Size (approx. mm)	Heart Carat Weight
4 mm.	0.25 ct.
5 mm.	0.50 ct.
6 mm.	0.75 ct.
6.5 mm.	1.00 ct.
7 mm.	1.25 ct.
7.5 mm.	1.50 ct.
7.7 mm.	1.75 ct.
8 mm.	2.00 ct.
8.5 mm.	2.50 ct.
9 mm.	3.00 ct.
10 mm.	3.50 ct.
10.5 mm.	4.00 ct.
11 mm.	4.50 ct.
11.5 mm.	5.00 ct.

Carat and Diamond Size

Is carat the size of a diamond?

Carat is actually a measure of a diamond's weight, not its precise size. Generally, a higher carat weight indicates a larger diamond, but it is recommended to verify the gem's exact measurements.

It is a common misconception that a higher carat weight directly corresponds to a larger diamond size. In reality, the carat measurement refers to the weight of a diamond, not its physical dimensions. Different diamond shapes showcase carat weight in varying ways, with some shapes appearing larger for the same carat weight. For instance, a 1.5 carat emerald cut diamond may appear longer and larger than a round brilliant diamond of the same carat weight due to the unique cut of each shape.
While there are general expectations for the correlation between diamond carat and size, it is important to consider each diamond individually. Our diamond size chart can provide further insight into this relationship. Always review a specific diamond's measurements to understand its exact profile and dimensions.

WHAT IS DIAMOND CERTIFICATION?

Diamond Certification is a document that describes the diamond’s in all 4C parameters. These reports are issued by the grading agencies with high reputations in the United States and Europe:
Gemological Institute of America (GIA)
American Gemological Society (AGS)
European Gemological Laboratory (EGL)
International Gemological Institute (IGI)

The most respected in the diamond industry, among all other organizations is Gemmological Institute of America (GIA)

Because of GIA’s high reputation, proven consistency and history, the majority of our diamonds, have been analyzed and graded by the Gemological Institute of America (GIA)
Diamonds that are accompanied by GIA reports are the most highly valued and respected, they are incredibly consistent and provide the greatest peace of mind when purchasing any diamond.
GIA reports evaluate diamonds on a variety of qualities and elements, including:

Diamond’s evaluation date
Measurements (in millimeters)
Cutting style and diamond shape
Carat weight
Table %
Depth %
Culet size
Symmetry
Proportion diagram
Polish grade
Girdle thickness
Cut grade (Excellent, Very Good, Good, Poor)
Color grade (ranging from D to J)
Clarity grade (IF, VVS1, VVS2, VS1, VS2, SI1, SI2)
Diamond plot showing all blemishes and inclusions
Fluorescence grade
Laser inscription (if applicable)

Professional Jewelry Appraisals

A jewelry appraisal is a jewelry quality identification report, written by a professional appraiser gemologist, stating the approximate retail replacement value of an item. The appraisal includes the cut, color, clarity, and either carat weight for diamonds or millimeter dimensions for precious and semiprecious gemstones, gold, platinum purity, jewelry weight etc...

All our Diamond engagement rings, diamond, gemstone and pearl jewelry $1,000 and over, will come with a free gemological appraisal, issued by a master gemologist. This signed and certified report can be provided to your insurance company to verify the replacement value of your diamond or fine jewelry.

jewelry evaluation

Shipping and Packaging Services offered: We send orders either with Federal Express, Purolator, Express Mail, DHL (Express)

We are delighted to offer complimentary shipping discounts during promotions, and even on returned items. Moreover, our valued subscribers can take advantage of exclusive offers just for them.

Residents of USA + Canada

All your orders are mailed directly from our Montreal office. No duty fees will apply to Canadians.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please note: All shipments are done via expedited shipping, fully insured.
Sales tax is applicable to all Canadian orders: GST 5% (+ QST 7.5% for Quebec), HST 13% for New Brunswick, Nova Scotia, Labrador and Newfoundland, and also GST (5%) for other Canadian provinces.
International customer will be responsible for any VAT and applicable taxes, however.
International orders; credit card verification may delay the confirmation of your order.

In addition to that, we are delighted to offer complimentary shipping discounts during promotions, and even on returned items. Moreover, our valued subscribers can take advantage of exclusive offers just for them.

Order deadlines: Processing times may vary on each product.

Fabrication and shipping times for Canada, USA and International orders.

Custom Jewelry Designs: 2-3 weeks

Inlayed rings: 7- 15 business days

Stone settings: 5 - 15 business days

🚀 If you need the item faster for a special occasion, please let us know at checkout. Just provide the date you would like to receive it.
Express orders will be delivered within 7-14 business days

We can't wait for you to receive your order on time and with a smile!

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