Round Petite Four Prong Solitaire$$1,2501250
Browse examples, or shop premium 2.5 carat lab diamonds.
Lab Diamonds, Engagement Rings, Diamond Sizes
The High Jewelry Standard for Lab Grown Diamonds.
At Ada Diamonds, we specialize in curating the highest-quality lab diamonds set in made-to-order engagement rings. Each piece is produced start to finish under one roof in our NYC flagship.
No matter what you're shopping for, our team of experts is here to support you in bringing your vision to life.
Browse the gallery below to explore 2.5 carat engagement rings we've created for past Ada clients.
What to Know
2.5 carats commands attention. It's large enough to be genuinely impressive while still feeling like something you'd wear every day.
No matter what size diamond you're considering, curation matters. You should never choose a diamond based on a grading report alone. While two diamonds may share identical 4Cs, they can look very different in person. Every diamond at Ada is hand-selected in person by our expert team. We curate only the rare few lab grown diamonds that meet our standards for cut precision, light performance, and beauty in real life.
Why Ada Diamonds
We know that a purchase this important deserves an exceptional experience. Whether you purchase online, or enjoy complimentary design support with a Diamond Concierge, each piece is made to order and crafted in house from start to finish. Our master jewelers create each setting one at a time, built specifically for its stone. Nothing is mass-produced. Every detail is considered, refined, and made to last for a lifetime.
Browse 2.5ct Engagement Rings
1 / 3
Shop Best Selling Styles
Shop Diamonds
Shop Diamonds
Shape
Carat
ShapeSave
2.25ct F VS1 Excellent Round
Round
2.25FVS1$3,050
2.25ct F VS1 Excellent Round
$3,050
ShapeRound
Carat2.25 CT
CutExcellent
ColorF
ClarityVS1
Measurements8.42 x 8.39 x 5.20
LabGIA
L/W Ratio1.00
2.26ct G VS2 8X Round
Round
2.26GVS2$2,250
2.26ct G VS2 8X Round
$2,250
ShapeRound
Carat2.26 CT
Cut8X
ColorG
ClarityVS2
Measurements8.45 x 8.46 x 5.15
LabGCAL
L/W Ratio1.00
2.26ct E VS1 Ideal Round
Round
2.26EVS1$3,400
2.26ct E VS1 Ideal Round
$3,400
ShapeRound
Carat2.26 CT
CutIdeal
ColorE
ClarityVS1
Measurements8.41 x 8.39 x 5.21
LabIGI
L/W Ratio1.00
2.27ct D VVS1 Radiant
Radiant
2.27DVVS1$4,925
2.27ct D VVS1 Radiant
$4,925
ShapeRadiant
Carat2.27 CT
ColorD
ClarityVVS1
Measurements9.51 x 6.61 x 4.17
LabGIA
L/W Ratio1.44
2.30ct D VVS2 Pear
Pear
2.30DVVS2$4,650
2.30ct D VVS2 Pear
$4,650
ShapePear
Carat2.3 CT
ColorD
ClarityVVS2
Measurements11.54 x 7.33 x 4.56
LabGIA
L/W Ratio1.57
2.30ct D VVS1 Radiant
Radiant
2.30DVVS1$5,000
2.30ct D VVS1 Radiant
$5,000
ShapeRadiant
Carat2.3 CT
ColorD
ClarityVVS1
Measurements8.70 x 6.79 x 4.55
LabGIA
L/W Ratio1.28
2.30ct F VS1 Excellent Round
Round
2.30FVS1$3,100
2.30ct F VS1 Excellent Round
$3,100
ShapeRound
Carat2.3 CT
CutExcellent
ColorF
ClarityVS1
Measurements8.47 x 8.46 x 5.22
LabGIA
L/W Ratio1.00
2.31ct D VS2 Cushion
Elong.
2.31DVS2$3,750
2.31ct D VS2 Cushion
$3,750
ShapeElongated Cushion
Carat2.31 CT
ColorD
ClarityVS2
Measurements8.23 x 6.93 x 4.91
LabIGI
L/W Ratio1.19
2.5ct Lab Diamond FAQs
- How do I choose a carat weight for my engagement ring?
- What should I look for when choosing a lab diamond?
- How does Ada select lab diamonds?
- Can I design a custom ring?
- Does Ada sell loose diamonds?
Explore Our Guides
View More
2.25 Carat Lab Grown Diamond Engagement Rings
Everything you need to know about 2.25 carat lab grown diamond engagement rings.
3 Carat Lab Diamond Engagement Rings
Everything you need to know about 3 carat lab grown diamond engagement rings.
Guide to Lab Diamond Shapes
Everything you need to know about lab diamond shapes, from round brilliants to Asscher cuts.
Explore Our Guides
View MoreReady to start your
concierge experience?
2.5 Carat Lab Grown Diamond Engagement Rings
Browse examples, or shop premium 2.5 carat lab diamonds.
Lab Diamonds, Engagement Rings, Diamond Sizes
Related Articles
The High Jewelry Standard for Lab Grown Diamonds.
At Ada Diamonds, we specialize in curating the highest-quality lab diamonds set in made-to-order engagement rings. Each piece is produced start to finish under one roof in our NYC flagship.
No matter what you're shopping for, our team of experts is here to support you in bringing your vision to life.
Browse the gallery below to explore 2.5 carat engagement rings we've created for past Ada clients.
What to Know
2.5 carats commands attention. It's large enough to be genuinely impressive while still feeling like something you'd wear every day.
No matter what size diamond you're considering, curation matters. You should never choose a diamond based on a grading report alone. While two diamonds may share identical 4Cs, they can look very different in person. Every diamond at Ada is hand-selected in person by our expert team. We curate only the rare few lab grown diamonds that meet our standards for cut precision, light performance, and beauty in real life.
Why Ada Diamonds
We know that a purchase this important deserves an exceptional experience. Whether you purchase online, or enjoy complimentary design support with a Diamond Concierge, each piece is made to order and crafted in house from start to finish. Our master jewelers create each setting one at a time, built specifically for its stone. Nothing is mass-produced. Every detail is considered, refined, and made to last for a lifetime.
Browse 2.5ct Engagement Rings
1 / 3
Shop Best Selling Styles
Shop Diamonds
Shop Diamonds
Shape
Carat
ShapeSave
2.25ct F VS1 Excellent Round
Round
2.25FVS1$3,0502.25ct F VS1 Excellent Round
$3,050
ShapeRound
Carat2.25 CT
CutExcellent
ColorF
ClarityVS1
Measurements8.42 x 8.39 x 5.20
LabGIA
L/W Ratio1.00
2.26ct G VS2 8X Round
Round
2.26GVS2$2,2502.26ct G VS2 8X Round
$2,250
ShapeRound
Carat2.26 CT
Cut8X
ColorG
ClarityVS2
Measurements8.45 x 8.46 x 5.15
LabGCAL
L/W Ratio1.00
2.26ct E VS1 Ideal Round
Round
2.26EVS1$3,4002.26ct E VS1 Ideal Round
$3,400
ShapeRound
Carat2.26 CT
CutIdeal
ColorE
ClarityVS1
Measurements8.41 x 8.39 x 5.21
LabIGI
L/W Ratio1.00
2.27ct D VVS1 Radiant
Radiant
2.27DVVS1$4,9252.27ct D VVS1 Radiant
$4,925
ShapeRadiant
Carat2.27 CT
ColorD
ClarityVVS1
Measurements9.51 x 6.61 x 4.17
LabGIA
L/W Ratio1.44
2.30ct D VVS2 Pear
Pear
2.30DVVS2$4,6502.30ct D VVS2 Pear
$4,650
ShapePear
Carat2.3 CT
ColorD
ClarityVVS2
Measurements11.54 x 7.33 x 4.56
LabGIA
L/W Ratio1.57
2.30ct D VVS1 Radiant
Radiant
2.30DVVS1$5,0002.30ct D VVS1 Radiant
$5,000
ShapeRadiant
Carat2.3 CT
ColorD
ClarityVVS1
Measurements8.70 x 6.79 x 4.55
LabGIA
L/W Ratio1.28
2.30ct F VS1 Excellent Round
Round
2.30FVS1$3,1002.30ct F VS1 Excellent Round
$3,100
ShapeRound
Carat2.3 CT
CutExcellent
ColorF
ClarityVS1
Measurements8.47 x 8.46 x 5.22
LabGIA
L/W Ratio1.00
2.31ct D VS2 Cushion
Elong.
2.31DVS2$3,7502.31ct D VS2 Cushion
$3,750
ShapeElongated Cushion
Carat2.31 CT
ColorD
ClarityVS2
Measurements8.23 x 6.93 x 4.91
LabIGI
L/W Ratio1.19
2.5ct Lab Diamond FAQs
- How do I choose a carat weight for my engagement ring?
- What should I look for when choosing a lab diamond?
- How does Ada select lab diamonds?
- Can I design a custom ring?
- Does Ada sell loose diamonds?
Explore Our Guides
View More2.25 Carat Lab Grown Diamond Engagement Rings
Everything you need to know about 2.25 carat lab grown diamond engagement rings.
3 Carat Lab Diamond Engagement Rings
Everything you need to know about 3 carat lab grown diamond engagement rings.
Guide to Lab Diamond Shapes
Everything you need to know about lab diamond shapes, from round brilliants to Asscher cuts.