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Radiant|Lab Grown|IGI

1.29ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG754508761

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG754508761

Diamond specifications and retailer prices

From £332 GBP
As of November 4, 2026
Save £1,064 GBP (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,396 GBP at Blue Nile · As of November 3, 2026
View at Blue Nile

About this 1.29ct lab-grown radiant diamond

This 1.29ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754508761 or 754508761. Listed at 14 retailers as of November 3, 2026, with prices from £332 to £1,396, a £1,064 spread on the same certified stone. Blue Nile lists it at £1,396. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.9°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508761
Dimensions5.37 × 5.37 × 3.54 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.37 mm5.37 mm1.29 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508761
Side View
Table 62.0%Crown 46.9°Girdle: MED-STKPavilion 33.1°Culet: NoneDepth 65.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £1,396 GBP|Low: £292 GBP|High: £1,889 GBP|Avg: £844 GBP
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 4, 2026
Retailer 2£332 GBP
Retailer 7£335 GBP
Retailer 10£394 GBP
Retailer 5£406 GBP
Retailer 9£448 GBP
Retailer 6£499 GBP
Retailer 11£525 GBP
Retailer 12£887 GBP
Retailer 8£952 GBP
Retailer 4£959 GBP
Retailer 13£1,004 GBP
Retailer 3£1,367 GBP
Retailer 14£1,385 GBP
Blue Nile£1,396 GBP

43 data points across 14 retailers

14 retailers£332 GBP to £1,396 GBP

A
Cheapest Retailer
-
£332 GBP
A
Retailer 2
-
£335 GBP
View
A
Retailer 3
-
£394 GBP
View
A
Retailer 4
-
£406 GBP
View
A
Retailer 5
-
£448 GBP
View
A
Retailer 6
-
£499 GBP
View
A
Retailer 7
-
£525 GBP
View
B+
Retailer 8
-
£887 GBP
View
B
Retailer 9
-
£952 GBP
View
Retailer 10
-
£959 GBP
View
Price last confirmed 27 days ago
B+
Retailer 11
-
£1,004 GBP
View
Retailer 12
-
£1,367 GBP
View
Price last confirmed 17 days ago
B
Retailer 13
-
£1,385 GBP
View
Most Expensive
B
Blue Nile
28885049 · Nov 3
£1,396 GBP
$1,885 USD
View
13 more retailers have this diamond
Prices start from £332 GBPSave up to £1,064 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.

A
1.29ct Radiant
£332 GBP