1.25 Carat Lab Grown Diamond Engagement Rings

Find the perfect 1.25ct lab diamond engagement ring.

The Leader in Luxury Lab Diamonds.

Every Ada Diamonds ring begins with a diamond chosen for how it looks in real life, not just on paper. From there, it’s designed and crafted to order in our NYC Flagship.

Our team works closely with you to shape the details, offering thoughtful guidance at every stage.

Browse the gallery below for inspiration from other beautiful 1.25ct lab diamond rings we’ve made for our clients.


What to Know

At 1.25 carats, cut quality matters most. A well-cut stone will look noticeably larger and brighter than a poorly cut one of the same weight.

This is why every diamond in Ada's inventory is inspected in person, not just evaluated by a grading report. Two 1.25 carat diamonds with identical specs can look entirely different in real life.

Why Ada Diamonds

Ada hand-selects every diamond in person, which matters more at 1.25 carats than many buyers expect. At this size, small differences in cut quality, light performance, and color consistency show up clearly in real life.

Our team reviews each stone up close, in multiple light environments, before it ever becomes part of our inventory. A grading report is a starting point, not the whole story.

From your first conversation to the moment your ring arrives, you'll work directly with a Diamond Concierge who knows your preferences and stays with you through every decision. Every ring is made to order in our NYC flagship, built around the exact stone you choose.

Browse 1.25ct Engagement Rings

1.25ct round in trellis pave setting yellow gold
1.25ct oval with round side stones three stone ring
lab created three stone ring with oval and round side stones
1.25ct princess with 1ct pear toi et moi engagement ring
lab grown two stone engagement ring
1.25ct pear in halo setting
1.25ct pear in halo engagement ring setting
1.25ct radiant cut in solitaire with hidden halo
1.25ct radiant cut solitaire lab diamond ring yellow gold
1.25ct cushion in halo setting platinum
lab created cushion cut diamond in halo setting platinum
emerald and triangular brilliant three stone lab diamond ring
1.25ct emerald cut in three stone engagement ring
1.25ct asscher cut diamond bezel solitaire
bezel 1.25ct asscher lab diamond engagement ring
1 / 5

Shop Diamonds

ShapeSave

1.26ct E VS2 Cushion

Elong.Cushion
1.26EVS2$1,350
1.26ct E VS2 Cushion

1.26ct E VS2 Cushion

$1,350

See Details
ShapeElongated Cushion
Carat1.26 CT
CutExcellent
ColorE
ClarityVS2
Measurements7.41 x 5.66 x 3.95
LabGCAL
L/W Ratio1.31

1.26ct F VS1 Cushion

CushionCushion
1.26FVS1$1,300
1.26ct F VS1 Cushion

1.26ct F VS1 Cushion

$1,300

See Details
ShapeCushion
Carat1.26 CT
ColorF
ClarityVS1
Measurements6.43 x 6.38 x 4.19
LabGIA
L/W Ratio1.01

1.27ct E VS1 Oval

OvalOval
1.27EVS1$1,475
1.27ct E VS1 Oval

1.27ct E VS1 Oval

$1,475

See Details
ShapeOval
Carat1.27 CT
Cut-
ColorE
ClarityVS1
Measurements8.68 x 6.10 x 3.77
LabIGI
L/W Ratio1.42

1.27ct F VVS2 Emerald

EmeraldEmerald
1.27FVVS2$1,600
1.27ct F VVS2 Emerald

1.27ct F VVS2 Emerald

$1,600

See Details
ShapeEmerald
Carat1.27 CT
ColorF
ClarityVVS2
Measurements7.64 x 5.03 x 3.39
LabIGI
L/W Ratio1.52

1.29ct D VVS2 Radiant

RadiantRadiant
1.29DVVS2$1,975
1.29ct D VVS2 Radiant

1.29ct D VVS2 Radiant

$1,975

See Details
ShapeRadiant
Carat1.29 CT
ColorD
ClarityVVS2
Measurements7.82 x 5.43 x 3.66
LabGIA
L/W Ratio1.44

1.29ct F VVS2 Emerald

EmeraldEmerald
1.29FVVS2$1,625
1.29ct F VVS2 Emerald

1.29ct F VVS2 Emerald

$1,625

See Details
ShapeEmerald
Carat1.29 CT
ColorF
ClarityVVS2
Measurements7.47 x 5.16 x 3.51
LabGIA
L/W Ratio1.45

1.31ct D VVS2 Radiant

RadiantRadiant
1.31DVVS2$2,000
1.31ct D VVS2 Radiant

1.31ct D VVS2 Radiant

$2,000

See Details
ShapeRadiant
Carat1.31 CT
ColorD
ClarityVVS2
Measurements7.77 x 5.41 x 3.67
LabGIA
L/W Ratio1.44

1.31ct F VS1 Emerald

EmeraldEmerald
1.31FVS1$1,350
1.31ct F VS1 Emerald

1.31ct F VS1 Emerald

$1,350

See Details
ShapeEmerald
Carat1.31 CT
ColorF
ClarityVS1
Measurements7.67 x 5.07 x 3.39
LabIGI
L/W Ratio1.51

1.25ct 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?

Ready to start your
concierge experience?