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Radiant|Lab Grown|IGI

1.31ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG804649668

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

Certificate IGI LG804649668

Diamond specifications and retailer prices

From £249 GBP
$334 USD
As of November 1, 2026
Save £1,599 GBP (87%) vs most expensive(unlock to see where)
21 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 LG804649668 or 804649668. Listed at 21 retailers as of November 1, 2026, with a 643% 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 angle37.6°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804649668
Dimensions7.73 × 5.35 × 3.67 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
7.73 mm5.35 mm1.31 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804649668
Side View
Table 65.0%Crown 37.6°Girdle: MED-STKPavilion 39.2°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: Nov 1
Current: £2,195 GBP|Low: £230 GBP|High: £2,996 GBP|Avg: £896 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
Retailer 17
November 2, 2026
Retailer 12£249 GBP
Retailer 2£262 GBP
Retailer 9£359 GBP
Retailer 15£399 GBP
Retailer 4£420 GBP
Retailer 11£439 GBP
Retailer 17£443 GBP
Retailer 10£448 GBP
Retailer 14£486 GBP
Retailer 6£665 GBP
Retailer 3£781 GBP
Retailer 7£811 GBP
Retailer 5£855 GBP
Retailer 8£962 GBP
Retailer 13£1,019 GBP
Retailer 16£1,848 GBP
Rare Carat£2,195 GBP

32 data points across 17 retailers

21 retailers£249 GBP to £1,848 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
-
£399 GBP
$535 USD
View
A
Retailer 7
-
£420 GBP
$564 USD
View
A
Retailer 8
-
£439 GBP
ZAR 9,507 ZAR
View
A
Retailer 9
-
£443 GBP
$595 USD
View
A
Retailer 10
-
£448 GBP
View
A
Retailer 11
-
£486 GBP
€621 EUR
View
B+
Retailer 12
-
£665 GBP
$892 USD
View
B+
Retailer 13
-
£781 GBP
$1,048 USD
View
Retailer 14
-
£789 GBP
$1,059 USD
View
Price last confirmed 28 days ago
B+
Retailer 15
-
£811 GBP
$1,088 USD
View
B+
Retailer 16
-
£855 GBP
$1,148 USD
View
B+
Retailer 17
-
£962 GBP
SGD 1,744 SGD
View
B+
Retailer 18
-
£1,019 GBP
View
Retailer 19
-
£1,154 GBP
$1,548 USD
View
Price last confirmed 33 days ago
B
Retailer 20
-
£1,848 GBP
$2,480 USD
View
Most Expensive
Rare Carat
ACP-208191 · Oct 21
£2,195 GBP
$2,945 USD
View
Price last confirmed 12 days ago
20 more retailers have this diamond
Prices start from £249 GBPSave up to £1,599 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