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Heart|Lab Grown|IGI

2.31ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG840632380

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840632380

Diamond specifications and retailer prices

From £880 GBP
$1,179 USD
As of October 30, 2026
Save £4,120 GBP (82%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,000 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.31ct lab-grown heart diamond

This 2.31ct lab-grown heart sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840632380 or 840632380. Listed at 20 retailers as of October 30, 2026, with prices from £880 to £5,000, a £4,120 spread on the same certified stone. Brilliant Earth lists it at £5,000. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.31
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840632380
Dimensions7.91 × 9.09 × 5.44 mm
L/W Ratio1.15
Girdle conditionFaceted
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
7.91 mm9.09 mm2.31 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840632380
Side View
Table 58.0%Crown 37.2°Girdle: Slightly ThickPavilion 38.9°Culet: NoneDepth 59.8%

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 30
Current: £5,000 GBP|Low: £880 GBP|High: £6,030 GBP|Avg: £2,343 GBP|-17.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
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Retailer 6
Retailer 7
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Retailer 12
Retailer 13
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Retailer 19
Retailer 20
October 30, 2026
Retailer 6£880 GBP
Retailer 20£957 GBP
Retailer 11£1,011 GBP
Retailer 17£1,020 GBP
Retailer 2£1,126 GBP
Retailer 16£1,149 GBP
Retailer 12£1,173 GBP
Retailer 5£1,185 GBP
Retailer 13£1,480 GBP
Retailer 8£1,620 GBP
Retailer 19£1,762 GBP
Retailer 18£1,912 GBP
Retailer 9£2,011 GBP
Retailer 14£2,632 GBP
Retailer 7£2,928 GBP
Retailer 15£3,296 GBP
Retailer 10£3,568 GBP
Retailer 3£3,574 GBP
Retailer 4£3,865 GBP
Brilliant Earth£5,000 GBP

22 data points across 20 retailers

20 retailers£880 GBP to £5,000 GBP

A
Cheapest Retailer
-
£880 GBP
$1,179 USD
A
Retailer 2
-
£957 GBP
$1,282 USD
View
A
Retailer 3
-
£1,011 GBP
$1,355 USD
View
Final sale: no returns
A
Retailer 4
-
£1,020 GBP
$1,367 USD
View
A
Retailer 5
-
£1,126 GBP
View
A
Retailer 6
-
£1,149 GBP
$1,540 USD
View
Retailer 7
-
£1,173 GBP
$1,572 USD
View
Price last confirmed 18 days ago
A
Retailer 8
-
£1,185 GBP
$1,588 USD
View
A
Retailer 9
-
£1,480 GBP
View
B+
Retailer 10
-
£1,620 GBP
$2,171 USD
View
B+
Retailer 11
-
£1,762 GBP
$2,361 USD
View
B+
Retailer 12
-
£1,912 GBP
$2,562 USD
View
B+
Retailer 13
-
£2,011 GBP
$2,694 USD
View
B+
Retailer 14
-
£2,632 GBP
ZAR 56,982 ZAR
View
B+
Retailer 15
-
£2,928 GBP
$3,923 USD
View
B+
Retailer 16
-
£3,296 GBP
View
B
Retailer 17
-
£3,568 GBP
SGD 6,460 SGD
View
B
Retailer 18
-
£3,574 GBP
$4,788 USD
View
B
Retailer 19
-
£3,865 GBP
$5,179 USD
View
Most Expensive
B
Brilliant Earth
21738461A · Oct 30
£5,000 GBP
$6,700 USD
View
19 more retailers have this diamond
Prices start from £880 GBPSave up to £4,120 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
2.31ct Heart
£880 GBP