Diamond stud earrings
Classic round brilliant diamond studs, also called solitaire earrings or diamond stud earrings, available with lab-grown or natural diamonds in 18K gold.
Lab-grown & natural diamonds · 18K gold
MORE DIAMOND. LESS COMPLEXITY.
Essential diamond jewellery in clear sizes and specifications. Choose lab-grown or natural diamonds, set in 18K yellow, white or rose gold.
Lab-grown & natural diamonds
18K gold
Selected with care
Clear specifications
The collection
Essential diamond jewellery, done properly.
Our selection principle
Two origins. One standard.
Diamond grading is useful, but not every difference is visible once a stone is worn. We curate for brilliance, appearance and value.
How we selectA leaner model
Less showroom. More diamond.
Our model is deliberately focused: a concise collection, specialist suppliers and clear choices without unnecessary complexity.
Human support
Want a second opinion?
Message us before you buy. We will explain the size, diamond type, documentation and delivery of any piece in plain language.
Speak to an expertThe 3-minute diamond guide
You do not need to become a gemologist.
Understand lab-grown and natural diamonds, carat weight, colour and clarity, and which details materially affect a finished piece.
Read the diamond guideDiamond jewellery guide
Find the right diamond essential
Whether you search for diamond earrings, diamond studs, a solitaire diamond necklace or a tennis bracelet, O’HARA keeps the choice focused: origin, size and gold colour.
Solitaire diamond pendants
A single round diamond pendant with a chain: a classic diamond necklace in 18K yellow, white or rose gold, with lab-grown or natural diamond options.
Diamond tennis bracelets
A continuous line of round diamonds set in an 18K gold bracelet. Compare lab-grown and natural diamond tennis bracelets by total carat weight.
Diamond jewellery questions
What is the difference between lab-grown and natural diamonds?
Both are diamonds with the same crystal structure and optical properties. Their origin differs: lab-grown diamonds are created in a controlled laboratory, while natural diamonds form in the earth.
What does total carat weight mean for diamond earrings and tennis bracelets?
Total carat weight is the combined weight of all diamonds in the piece. For stud earrings it normally refers to both earrings together; for a tennis bracelet it is the sum of all stones.
Should I choose 18K yellow, white or rose gold?
The choice is visual. Yellow gold gives warmth and contrast, white gold creates a cooler continuous look, and rose gold adds a softer blush warmth around the diamonds.
How do I choose the size of diamond studs, a solitaire pendant or a tennis bracelet?
Compare carat weight together with dimensions and how the piece looks when worn. O’HARA presents the main sizes clearly so the choice does not depend on grading terminology alone.