
Diamond stud earrings are known for their simple look, sparkle and the way they suit every face and every outfit. Before you set out to purchase diamond studs for Christmas, it is important to learn how the size of diamond studs is measured. This not only helps you to understand how to evaluate a pair of studs, but also helps you to choose diamond stud earrings that would be best for your budget!
In the next section of the blog, we will explore what carat means in diamond earrings, the diamond stud size chart, which size to buy as a gift and the settings and backs of diamond studs. Find out more about the Diamond Stud Earrings Vancouver buyers are gifting this year here:
What Does Carat Mean in Diamond Stud Earrings?
The carat weight of diamond stud earrings refers to the total carat weight (CTW) of both the earrings together. It should not be confused with the carat weight of one earring. For example, 1 carat diamond stud earrings have two diamonds of 0.50 carat each, one in each ear. If you want a 1 carat diamond in each ear, then you will have to choose 2 carat total weight diamond studs.
You should note that carat refers to the weight of the diamond and not the size of the diamond. In the carat measurement system, 1 carat = 200 milligrams. The cut of the diamond also determines how big the diamond looks, so two diamonds of the same carat weight may not look exactly the same on the ear.

Diamond Stud Earrings Size Chart
The diamond stud earrings size chart is used to understand how big each diamond will look on the ear. The size of a diamond stud is measured in millimetres (mm) and it depends on the carat weight of each earring. Find out more about the diamond studs size for well cut round diamonds here:
- 0.25 carat total weight diamond studs have 0.125 carat in each earring which is around 3.2 mm
- 0.50 carat total weight diamond studs have 0.25 carat in each earring which is around 4.1 mm
- 1.00 carat total weight diamond studs have 0.50 carat in each earring which is around 5.2 mm
- 1.50 carat total weight diamond studs have 0.75 carat in each earring which is around 5.8 mm
- 2.00 carat total weight diamond studs have 1.00 carat in each earring which is around 6.5 mm
- 3.00 carat total weight diamond studs have 1.50 carat in each earring which is around 7.4 mm
You should note that the mm size in the diamond studs size chart is only an average and it may change a little with the cut of the diamond. For example, a 5 mm diamond stud is a little smaller than the eraser at the end of a pencil!

Best Size of Diamond Stud Earrings for a Christmas Gift
The best size of diamond stud earrings for a Christmas gift depends on her style and the jewelry she already has. 0.50 to 1.00 carat total weight is regarded as a safe size of diamond studs for a first pair, as the diamonds can be seen clearly and still they are small for daily wear. The 1.00 carat total weight diamond studs are the most popular size of diamond stud earrings for women who wear jewelry every day. In case she already has small diamond studs, a 1.50 to 2.00 carat total weight pair can be gifted as an upgrade. Diamond studs of 2.00 carat total weight and above or halo diamond studs are for women who like a glamorous look. For small ears and a simple style, diamond studs of 1.00 carat total weight or less should be chosen.
Shape of Diamond Studs
The shape of diamond studs should not be confused with the cut of the diamond. The shape refers to the outline of the diamond like round, oval, pear, princess and cushion. The round shape is the most classic shape of diamond studs and gives the highest sparkle. Oval and pear shape diamond studs can look bigger than round diamond studs of the same carat weight as their surface is spread out more. Princess cut diamond studs have a square and modern look while cushion cut diamond studs have a soft look. Round diamond studs are the safest shape if you are not sure about her style.
Lab Grown vs Natural Diamond Stud Earrings
Before you buy diamond stud earrings, we also recommend that you know more about the difference between natural and lab grown diamond studs.
Natural Diamond Stud Earrings
Natural diamonds form deep within the Earth's crust under extreme heat and pressure over billions of years. These are much rarer to find, which makes natural diamond stud earrings more expensive than lab grown diamond studs. Natural diamonds at SMC Diamonds are certified by GIA or IGI.
Lab Grown Diamond Stud Earrings
Lab Grown Diamond Stud Earrings Canada buyers choose are made with diamonds produced in a highly controlled laboratory environment. They have the same chemical and physical properties as natural diamonds and they cost less, so you can choose bigger diamond studs within the same budget!
Colour and Clarity of Diamond Stud Earrings
Diamond stud earrings are usually seen from a distance and from the side, so you can save money on colour and clarity. An SI1 clarity is usually eye clean in diamond studs and you won't need a VVS clarity. A G to I colour looks white in white gold or platinum, and in yellow gold or rose gold you can choose a lower colour grade as the warm metal hides a little colour. The cut is regarded as the most important for diamond studs as a well cut diamond will sparkle even from far away. You should also always ask for a grading report. Every diamond at SMC Diamonds is certified and laser inscribed.

Settings and Backs of Diamond Stud Earrings
The setting and back of diamond stud earrings determine the look and safety of the earrings. Here's the settings and backs of diamond studs explained:
Settings
A four prong setting shows more of the diamond and gives a classic look. A three prong martini setting lets the diamond sit closer to the ear and is comfortable to wear. A bezel setting covers the edge of the diamond with metal and is very secure. A halo setting has small diamonds around the centre diamond, which makes the studs look bigger than their carat weight.
Backs
Push backs are suitable for small and light diamond studs. For diamond stud earrings above 1 carat total weight, you should choose screw backs as they do not slip off easily.

Tips Before Buying Diamond Stud Earrings for Christmas
Before you buy diamond stud earrings for Christmas, you should check if her ears are pierced and which earrings she wears most often. You should also match the metal of the studs with the jewelry she wears every day. Keep the certificate of the diamonds safe, as it is proof of the diamond quality. If you want custom diamond studs, you should place the order early as the design and setting take time in December.
Why Choose SMC Diamonds?
SMC Diamonds has been creating diamond jewelry in Vancouver since 2013. When you buy diamond stud earrings from SMC Diamonds, you get:
- Certified and laser inscribed diamonds
- Lifetime warranty
- Annual complimentary cleaning and inspection
- Price match guarantee across North America
- Free shipping and easy exchange across Canada
- Flexible financing and payment plans
We can also design diamond studs as per your budget, shape and metal with a 3D design before the earrings are made.
FAQs
What does 1 carat total weight mean in earrings?
1 carat total weight is the weight of both the earrings together. A 1 carat pair has two diamonds of 0.50 carat each.
What is the most popular size of diamond stud earrings?
1 carat total weight, which is 0.50 carat in each ear, is the most popular size as it is visible and easy to wear every day.
Are lab grown diamond studs a good Christmas gift?
Yes, lab grown diamond studs are real diamonds and give you a bigger size within your budget.
Should I choose push backs or screw backs?
Push backs are fine for small studs. For studs above 1 carat total weight, screw backs are more secure.
Can I exchange the diamond studs after Christmas?
Yes, SMC Diamonds offers easy exchange across Canada. You can read our Return & Exchange Policy for more details.
Conclusion
The carat weight, shape, diamond type and backs are integral to choosing the right diamond stud earrings. This helps you to find a pair of diamond studs that she will wear and love long after Christmas.
Searching for the Perfect Diamond Studs This Christmas?
Find the perfect diamond stud earrings for her at SMC Diamonds. Visit our Vancouver showroom or message us on WhatsApp. Book an appointment today!

