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Radiant|Lab Grown|IGI

1.31ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG825661384

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

Certificate IGI LG825661384

Diamond specifications and retailer prices

From £249 GBP
$334 USD
As of November 1, 2026
Save £1,681 GBP (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,195 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 1.31ct lab-grown radiant diamond

This 1.31ct 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 LG825661384 or 825661384. Listed at 19 retailers as of November 1, 2026, with a 675% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.31
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle25.9°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825661384
Dimensions7.53 × 5.46 × 3.78 mm
L/W Ratio1.38
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
7.53 mm5.46 mm1.31 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825661384
Side View
Table 63.0%Crown 25.9°Girdle: MediumPavilion 38.2°Culet: NoneDepth 69.2%

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 1
Current: £2,195 GBP|Low: £249 GBP|High: £2,996 GBP|Avg: £909 GBP|-1.5%
Rare Carat
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
Retailer 15
Retailer 16
November 3, 2026
Retailer 16£249 GBP
Retailer 10£262 GBP
Retailer 8£359 GBP
Retailer 14£406 GBP
Retailer 4£428 GBP
Retailer 12£449 GBP
Retailer 11£459 GBP
Retailer 13£486 GBP
Retailer 6£667 GBP
Retailer 2£772 GBP
Retailer 3£800 GBP
Retailer 5£875 GBP
Retailer 7£962 GBP
Retailer 9£1,019 GBP
Retailer 15£1,930 GBP
Rare Carat£2,195 GBP

33 data points across 16 retailers

19 retailers£249 GBP to £1,930 GBP

A
Cheapest Retailer
-
£249 GBP
$334 USD
Final sale: no returns
A
Retailer 2
-
£262 GBP
View
Retailer 3
-
£278 GBP
$373 USD
View
Price last confirmed 31 days ago
Retailer 4
-
£324 GBP
$435 USD
View
Price last confirmed 36 days ago
Retailer 5
-
£359 GBP
$482 USD
View
Price last confirmed 30 days ago
A
Retailer 6
-
£406 GBP
$545 USD
View
A
Retailer 7
-
£428 GBP
$575 USD
View
A
Retailer 8
-
£449 GBP
ZAR 9,734 ZAR
View
A
Retailer 9
-
£459 GBP
View
A
Retailer 10
-
£486 GBP
€621 EUR
View
B+
Retailer 11
-
£667 GBP
$895 USD
View
B+
Retailer 12
-
£772 GBP
$1,036 USD
View
B+
Retailer 13
-
£800 GBP
$1,074 USD
View
B+
Retailer 14
-
£875 GBP
$1,174 USD
View
B+
Retailer 15
-
£962 GBP
SGD 1,744 SGD
View
B+
Retailer 16
-
£1,019 GBP
View
Retailer 17
-
£1,154 GBP
$1,548 USD
View
Price last confirmed 33 days ago
B
Retailer 18
-
£1,930 GBP
$2,590 USD
View
Most Expensive
Rare Carat
PD-244044 · Oct 21
£2,195 GBP
$2,945 USD
View
Price last confirmed 12 days ago
18 more retailers have this diamond
Prices start from £249 GBPSave up to £1,681 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
1.31ct Radiant
£249 GBP