1 Carat Diamond Stud Earrings: Size, Price and What to Check

This is the most common mix-up in diamond earrings. Read the label carefully.

Price does not scale evenly. A 1.00 carat stone costs more than two 0.50 carat stones of the same grade, because larger rough is rarer. Sizes are averages for round brilliants; cut proportions shift them a little.

Our listings closest to one carat are cluster and pavé designs. Many small diamonds spread over a wider face, so the earring looks bigger than a single 0.50 ct stone.

• Round Baguette Earrings ($1,955): 0.89 ctw, round with baguettes.
• Classic Round Cluster Earrings ($1,620): 0.91 ctw cluster.
• Diamond Square Pave Earrings ($1,880): 1.09 ctw square pavé.
• Illuminati Earrings ($2,370): 1.17 ctw.
• Gold Halo Diamond Earrings ($1,585): 0.72 ctw with a gold halo, a lighter option.

All are 14K gold, made to order in yellow, white or rose. For a solitaire pair at exactly 1.00 ctw in the grade you want, order through custom: you approve the design and exact price before anything is made.

• Cut: the biggest factor in sparkle at 5 mm.
• Color: G to H looks white in white gold; in yellow gold you can go a grade lower.
• Clarity: VS2 and SI1 are usually eye-clean at earring distance. VVS adds cost you cannot see.
• Matching: the two stones should face up the same size and color. Ask for a matched pair.

At 0.50 ct per ear a push back works, but a screw back is the safer pick for a pair you will wear every day, because studs are most often lost when a back loosens. The screw back vs push back comparison covers both. Men wear the same size; see the men's earrings guide and men's diamond earrings.

If the goal is the classic look, choose a solitaire. If the goal is the most visible sparkle for the money, a cluster at the same total weight usually wins.

The pairs in our catalog nearest one carat total sit between $1,585 and $2,370 in 14K gold. Solitaire pairs at a full 1.00 ctw cost more and vary widely with origin and grade: a lab-grown pair usually costs a fraction of a natural pair of the same grade. When you compare quotes, put the per-ear weight, the color, the clarity and the metal side by side. Two "1 carat" pairs with different grades are not the same product.

On a small lobe, 0.50 ct per ear fills most of the visible area and looks substantial. On a larger lobe it looks refined rather than big. If you are buying for someone whose current studs feel too small, measure them: if they are about 4 mm across, a 1 ctw pair is the next clear step up; if they are already 5 mm, go to 1.50 ctw for a change anyone will notice.

One carat total is the classic milestone gift: anniversaries, graduations, push presents. Choose white gold if you do not know her jewelry, because it matches silver-tone and white-tone pieces, or match the color of the watch she wears every day. All orders ship insured.

At 0.50 carat per ear, lab-grown diamonds cost much less than natural for the same grade, and the FTC requires them to be labeled lab-grown. Natural stones hold more resale value. Both look identical. Full detail in the diamond stud earrings guide; more styles at diamond stud earrings, all studs and all earrings.