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Radiant|Lab Grown|IGI

1.25ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG839684869

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

Certificate IGI LG839684869

Diamond specifications and retailer prices

From £284 GBP
$381 USD
As of October 27, 2026
Save £2,138 GBP (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,422 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.25ct lab-grown radiant diamond

This 1.25ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839684869 or 839684869. Listed at 22 retailers as of October 27, 2026, with prices from £284 to £2,422, a £2,138 spread on the same certified stone. Brilliant Earth lists it at £2,422. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839684869
Dimensions7.58 × 5.28 × 3.62 mm
L/W Ratio1.44
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
7.58 mm5.28 mm1.25 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839684869
Side View
Table 66.0%Crown 40.4°Girdle: MED-STKPavilion 34.6°Culet: NoneDepth 68.6%

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: Oct 27
Current: £2,422 GBP|Low: £284 GBP|High: £2,422 GBP|Avg: £836 GBP
Brilliant Earth
Retailer 2
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October 27, 2026
Retailer 3£284 GBP
Retailer 23£318 GBP
Retailer 5£352 GBP
Retailer 6£352 GBP
Retailer 8£355 GBP
Retailer 21£364 GBP
Retailer 19£462 GBP
Retailer 14£504 GBP
Retailer 20£539 GBP
Retailer 10£559 GBP
Retailer 22£581 GBP
Retailer 18£595 GBP
Retailer 2£633 GBP
Retailer 12£640 GBP
Retailer 9£766 GBP
Retailer 7£1,131 GBP
Retailer 17£1,157 GBP
Retailer 11£1,160 GBP
Retailer 15£1,285 GBP
Retailer 4£1,320 GBP
Retailer 13£1,377 GBP
Retailer 16£1,604 GBP
Retailer 24£1,803 GBP
Brilliant Earth£2,422 GBP

22 data points across 24 retailers

22 retailers£284 GBP to £2,422 GBP

A
Cheapest Retailer
-
£284 GBP
$381 USD
Retailer 2
-
£318 GBP
$427 USD
View
Price last confirmed 9 days ago
Retailer 3
-
£352 GBP
$472 USD
View
Price last confirmed 8 days ago
Retailer 4
-
£352 GBP
$472 USD
View
Price last confirmed 8 days ago
Retailer 5
-
£462 GBP
$620 USD
View
Price last confirmed 6 days ago
Retailer 6
-
£504 GBP
$676 USD
View
Price last confirmed 7 days ago
Retailer 7
-
£539 GBP
€689 EUR
View
Price last confirmed 10 days ago
Retailer 8
-
£559 GBP
$750 USD
View
Price last confirmed 8 days ago
Retailer 9
-
£581 GBP
$779 USD
View
Price last confirmed 8 days ago
Retailer 10
-
£595 GBP
ZAR 12,906 ZAR
View
Price last confirmed 10 days ago
B+
Retailer 11
-
£633 GBP
View
B+
Retailer 12
-
£640 GBP
$859 USD
View
B+
Retailer 13
-
£766 GBP
$1,029 USD
View
Retailer 14
-
£1,131 GBP
$1,518 USD
View
Price last confirmed 8 days ago
Retailer 15
-
£1,157 GBP
CA$2,156 CAD
View
Price last confirmed 7 days ago
B
Retailer 16
-
£1,160 GBP
$1,556 USD
View
B
Retailer 17
-
£1,285 GBP
$1,725 USD
View
Retailer 18
-
£1,320 GBP
$1,771 USD
View
Price last confirmed 9 days ago
Retailer 19
-
£1,377 GBP
View
Price last confirmed 7 days ago
B
Retailer 20
-
£1,604 GBP
$2,153 USD
View
Retailer 21
-
£1,803 GBP
$2,419 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
22182368A · Oct 28
£2,422 GBP
$3,250 USD
View
21 more retailers have this diamond
Prices start from £284 GBPSave up to £2,138 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
1.25ct Radiant
£284 GBP