Oval|Lab Grown|SGL

1.26ct D SI1 Oval Lab Grown Diamond

GD • D/SI1

Diamond specifications and retailer prices

From £116 GBP
As of November 5, 2026
Save £347 GBP (75%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £463 GBP at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.26ct lab-grown oval diamond

This 1.26ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 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

1.26
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabSGL
Dimensions8.66 × 5.99 × 3.82 mm
L/W Ratio1.45
Top View
8.66 mm5.99 mm1.26 ctD / SI1
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateSGL
Side View
Table 59.4%CrownGirdle: MediumPavilionCuletDepth 3.8%

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: £463 GBP|Low: £72 GBP|High: £463 GBP|Avg: £172 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6£72 GBP
Retailer 2£116 GBP
Retailer 3£134 GBP
Retailer 4£144 GBP
Retailer 5£144 GBP
NZ Jewellers£463 GBP

13 data points across 6 retailers

18 retailers£116 GBP to £463 GBP

Retailer 1
-
£111 GBP
Price last confirmed 30 days ago
Retailer 2
-
£116 GBP
View
Price last confirmed 39 days ago
B+
Retailer 3
-
£116 GBP
View
Retailer 4
-
£116 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
Retailer 7
-
£144 GBP
View
Price last confirmed 29 days ago
B+
Retailer 8
-
£144 GBP
View
Retailer 9
-
£144 GBP
View
Price last confirmed 21 days ago
Retailer 10
-
£144 GBP
View
Price last confirmed 21 days ago
Retailer 11
-
£144 GBP
View
Price last confirmed 30 days ago
B+
Retailer 12
-
£144 GBP
View
Retailer 13
-
£144 GBP
View
Price last confirmed 25 days ago
Retailer 14
-
£463 GBP
View
Price last confirmed 25 days ago
Retailer 15
-
£463 GBP
View
Price last confirmed 37 days ago
C
Retailer 16
-
£463 GBP
View
Retailer 17
-
£463 GBP
View
Price last confirmed 30 days ago
Most Expensive
NZ Jewellers
e84281b2-a2b0-40a6-a316-5eafe93c7ce5 · Oct 18
£463 GBP
$620 USD
View
Price last confirmed 19 days ago
17 more retailers have this diamond
Prices start from £116 GBPSave up to £347 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+
1.26ct Oval
£116 GBP