Oval|Lab Grown|SGL

1.25ct D SI2 Oval Lab Grown Diamond

GD • D/SI2

Diamond specifications and retailer prices

From £115 GBP
As of November 5, 2026
Save £345 GBP (75%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £460 GBP at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.25ct lab-grown oval diamond

This 1.25ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by SGL. Listed at 18 retailers as of November 5, 2026, with a 300% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.25
Carat
D
Colour
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabSGL
Dimensions9.37 × 5.93 × 3.47 mm
L/W Ratio1.58
Top View
9.37 mm5.93 mm1.25 ctD / SI2
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateSGL
Side View
Table 66.0%CrownGirdle: MediumPavilionCuletDepth 3.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £460 GBP|Low: £72 GBP|High: £460 GBP|Avg: £178 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6£72 GBP
Retailer 2£115 GBP
Retailer 3£134 GBP
Retailer 4£143 GBP
Retailer 5£143 GBP
NZ Jewellers£460 GBP

13 data points across 6 retailers

18 retailers£115 GBP to £460 GBP

Retailer 1
-
£111 GBP
Price last confirmed 30 days ago
Retailer 2
-
£115 GBP
View
Price last confirmed 39 days ago
B+
Retailer 3
-
£115 GBP
View
Retailer 4
-
£115 GBP
View
Price last confirmed 19 days ago
B+
Retailer 5
-
£134 GBP
View
Retailer 6
-
£134 GBP
View
Price last confirmed 24 days ago
B+
Retailer 7
-
£143 GBP
View
Retailer 8
-
£143 GBP
View
Price last confirmed 29 days ago
Retailer 9
-
£143 GBP
View
Price last confirmed 21 days ago
Retailer 10
-
£143 GBP
View
Price last confirmed 21 days ago
Retailer 11
-
£143 GBP
View
Price last confirmed 30 days ago
B+
Retailer 12
-
£143 GBP
View
Retailer 13
-
£143 GBP
View
Price last confirmed 25 days ago
Retailer 14
-
£460 GBP
View
Price last confirmed 25 days ago
Retailer 15
-
£460 GBP
View
Price last confirmed 37 days ago
C
Retailer 16
-
£460 GBP
View
Retailer 17
-
£460 GBP
View
Price last confirmed 30 days ago
Most Expensive
NZ Jewellers
4c4f89f4-3e88-4f3d-9c0b-61dfd197d922 · Oct 18
£460 GBP
$616 USD
View
Price last confirmed 19 days ago
17 more retailers have this diamond
Prices start from £115 GBPSave up to £345 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.25ct Oval
£115 GBP