A 1.25 carat lab diamond ring offers the perfect balance between elegance, sparkle, and affordability. Slightly larger than a traditional 1 carat diamond, a 1.25 carat diamond provides a more noticeable appearance while remaining comfortable for everyday wear.

In 2026, the average price of a 1.25 carat lab grown diamond ring ranges from $1,200 to over $5,000 depending on the cut, color, clarity, certification, and ring setting.

In this guide, you’ll learn:

• How much a 1.25 carat lab diamond ring costs
• What size it looks like on hand
• Best diamond shapes and settings
• Lab grown vs natural diamond prices
• Expert buying tips for the best value

What Is a 1.25 Carat Diamond?

Carat is the unit used to measure diamond weight. A 1.25 carat diamond weighs approximately 0.25 grams.

Carat refers to weight rather than visible size. A diamond’s appearance also depends on:

• Shape
• Cut quality
• Depth percentage
• Surface area

Well-cut diamonds often appear larger and brighter than poorly cut diamonds with heavier carat weights.

How Much Does a 1.25 Carat Lab Diamond Ring Cost?

The price of a 1.25 carat lab grown diamond ring varies based on several important factors:

• Cut quality
• Color grade
• Clarity grade
• Diamond shape
• Certification
• Ring setting

Average price ranges by shape:

Shape	Average Price
Round Cut	$1,500 – $5,000
Oval Cut	$1,300 – $4,000
Cushion Cut	$1,200 – $3,800
Emerald Cut	$1,200 – $3,500
Radiant Cut	$1,300 – $4,200

Round brilliant diamonds are typically the most expensive because they maximize sparkle and require more rough material during cutting.

You can also use our Diamond Price Calculator to compare prices based on cut, clarity, color, and carat weight.

Best Color and Clarity for a 1.25 Carat Diamon

For the best balance between appearance and value, many buyers choose:

• G or H color
• VS1 or VS2 clarity

These grades appear nearly colorless and eye-clean while costing less than flawless or D-color diamonds.

Recommended grades:

Category	Best Value Option
Cut	Excellent / Ideal
Color	G–H
Clarity	VS1–VS2

Cut quality usually has the biggest impact on sparkle and brilliance.

1.25 Carat Diamond Ring Size on Han

A 1.25 carat diamond creates a noticeable and elegant appearance while still feeling practical for everyday wear.

Approximate sizes by shape:

Shape	Approximate Size
Round	6.9 – 7.1 mm
Oval	8 x 6 mm
Emerald	7.5 x 5.5 mm
Cushion	6.8 x 6.8 mm

Elongated shapes such as oval and pear cuts often appear larger because they cover more finger surface area.

1.25 Carat Round Solitaire 14k Yellow Gold Engagement Ring

Diamond shapes such as the round and oval are known for their brilliance. This 1.25 carat round lab grown diamond is set in a 14k yellow gold solitaire diamond ring and is suitable for anyone that wants to keep it ‘Simple’.

Solitaire arrangements seem to never go out of style and will last for many years to come.

1.25 Carat Round Diamond 4 Prong Setting Engagement Ring

This spectacular platinum diamond band wedding ring with a 1.25ct round lab grown diamond and a discreet 4 prong setting offers the diamond a crisp polish and the platinum diamond band delivers a high-quality aesthetic appeal.

The arrangement does not appear to be going out of style anytime soon, and according to some market experts, it will quickly become a more popular choice among buyers.

1.25 Carat Three Stone 18k Yellow Gold Engagement Ring

A unique variation on the classic 18k yellow gold three-stone diamond ring, with a 1.25 carat oval lab grown diamond. This one-of-a-kind three stone setting will attract the eye of anyone who sees the band and will undoubtedly stand noticed.

A central diamond is complemented by a set of diamonds carefully arranged in the trellis basket to create this masterpiece. And the yellow gold band will give the whole arrangement a vintage look and feel.

1.25 Carat Oval Cut Diamond 14k Yellow Gold Engagement Ring

The 1.25 carat oval shaped lab created diamond in this 14k yellow gold diamond band engagement ring is a classic piece of jewelry. The diamonds that encircle the centerpiece and are put on the diamond add to the beauty of the jewelry.

The centerpiece’s oval cut/shape will elongate the finger and is ideal for most people.

1.25 Carat Pear Halo 18k White Gold Engagement Ring

A 1.25 carat pear lab grown diamond is set in an 18k white gold halo engagement ring. It’s a ring with a distinctive halo of lab-created diamonds placed in a hoop mounting, as well as a column diamond pavé set to ring to accent the central stone.

The pear structure, which is a highly unusual shape in and of itself, is the ideal blast of diamond paradise.

1.25 Carat Pear Solitaire Engagement Ring

A platinum solitaire engagement ring featuring a pear 1.25 carat lab grown diamond. This unique shaped diamond in itself is very distinguished; the solitary arrangement with a platinum band makes the ring seemingly simple yet very elegant.

For anyone who might be looking for something simple, elegant yet very distinct is surely to like our pear shaped solitaire engagement ring.

1.25 Carat Cushion Solitaire 14k Yellow Gold Engagement Ring

Lovely and classic, this 14k yellow gold solitaire engagement ring with a 1.25 carat cushion lab grown diamond includes small prongs and a gallery wire for optimal light exposure.

The golden band gives the diamond a yellow color, giving the ring a luxurious appearance.

1.25 Carat Cushion Solitaire 18k Yellow Gold Engagement Ring

A 1.25 carat cushion brilliant lab grown diamond is weaved with an 18k yellow gold band which forms an amazing engagement ring. This diamond ring is sure to shine brightly for you.

The diamond cushion cut evolved from the ancient period and is usually linked with a vintage style.

1.25 Carat Princess Diamond 4 Prong Setting Engagement Ring

This ring is a platinum diamond band with a 1.25 carat princess cut lab grown diamond. This arrangement is dainty and beautiful, with an incorporated four-prong basket and miniature prongs.

This form is quite common, ranking fourth among the most preferred after the round, oval, and cushion cuts.

Also Check Out:  1.75 Carat Lab Grown Diamond Engagement Rings

1.25 Carat Princess Diamond 18k White Gold Engagement Ring

Within an 18k white gold diamond band, a 1.25 carat princess cut lab grown diamond is weaved to create a beautiful diamond engagement ring.

This split diamond column has a princess cut diamond as the focal point and is set with tiny, almost imperceptible prongs, making it a classic and elegant item.

1.25 Carat Asscher Solitaire 18k White Gold Engagement Ring

A 1.25 carat asscher cut lab grown diamond is set in an 18k white gold solitaire diamond ring. A classy solitaire design with a narrow band that wraps your center diamond for maximum light brilliance and intrigue.

The asscher cut has enormous step facets and a high crown, giving it a radiance that no other gem shape can seem to compete with.

1.25 Carat Radiant Solitaire Engagement Ring

This is a hybrid diamond design, a creative merging of the step cut of the emerald form with the brilliant cut of round stones. It is a platinum solitaire engagement ring containing a 1.25ct radiant cut lab grown diamond.

This arrangement enhances the diamond’s radiance and brilliance while also drawing attention to it.

Lab Grown vs Natural 1.25 Carat Diamond Price

Lab grown diamonds are significantly more affordable than natural diamonds of similar quality.

Diamond Type	Average Price
Natural 1.25 Carat Diamond	$5,000 – $18,000+
Lab Grown 1.25 Carat Diamond	$1,200 – $5,000

Both are real diamonds with identical physical and optical properties.

The main difference is origin:

• Natural diamonds form underground over billions of years
• Lab diamonds are created in controlled laboratory environments

IGI vs GIA Certification

Certification is important when purchasing a lab grown diamond ring.

The most common grading laboratories are:

• IGI (International Gemological Institute)
• GIA (Gemological Institute of America)

IGI certification is widely used for lab grown diamonds and includes detailed grading information for:

• Cut
• Color
• Clarity
• Carat weight

Always purchase certified diamonds for better transparency and confidence.

Tips for Buying a 1.25 Carat Lab Diamond Ring

Before purchasing, consider these expert tips:

• Prioritize cut quality first
• Choose VS1 or VS2 clarity
• Select G or H color grades
• Compare multiple diamond shapes
• Use certified diamonds only
• Consider oval or pear cuts for a larger appearance
• Compare prices using a Diamond Price Calculator

A well-cut 1.25 carat diamond can appear brighter and larger than a heavier diamond with poor proportions.

Frequently Asked Questions

Is a 1.25 carat diamond good for an engagement ring?

Yes. A 1.25 carat diamond is considered an excellent balance between size, sparkle, and practicality.

Is a 1.25 carat diamond big?

Yes. A 1.25 carat diamond appears noticeably larger than a traditional 1 carat diamond.

Which diamond shape looks the biggest?

Oval, pear, and marquise cuts often appear larger because of their elongated shapes.

Are lab grown diamonds real diamonds?

Yes. Lab grown diamonds are chemically and physically identical to natural diamonds.

What is the best clarity for a 1.25 carat diamond?

VS1 and VS2 clarity grades usually provide the best balance between appearance and value.

Related Articles

• Diamond Price Calculator
• IGI vs GIA Certification Guide
• 1-carat-lab-grown-diamond-ring
• 1.75 Carat Lab Diamond Ring Guide

Final Thoughts

A 1.25 carat lab diamond ring is an excellent choice for buyers looking for extra brilliance and presence without the higher price of larger diamonds. Whether you prefer a classic round cut, elegant oval shape, or modern radiant style, lab grown diamonds provide outstanding beauty and value.