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Heart|Lab Grown|IGI

1.83ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG840632375

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840632375

Diamond specifications and retailer prices

From £586 GBP
$785 USD
As of October 30, 2026
Save £2,653 GBP (82%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,239 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.83ct lab-grown heart diamond

This 1.83ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840632375 or 840632375. Listed at 20 retailers as of October 30, 2026, with prices from £586 to £3,239, a £2,653 spread on the same certified stone. Brilliant Earth lists it at £3,239. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.83
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840632375
Dimensions7.44 × 8.50 × 4.82 mm
L/W Ratio1.14
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
7.44 mm8.50 mm1.83 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840632375
Side View
Table 56.0%Crown 37.2°Girdle: MED-THKPavilion 37.8°Culet: NoneDepth 56.7%

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: £3,239 GBP|Low: £586 GBP|High: £4,381 GBP|Avg: £1,582 GBP|-26.1%
Brilliant Earth
Retailer 2
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Retailer 20
October 31, 2026
Retailer 7£586 GBP
Retailer 4£637 GBP
Retailer 17£679 GBP
Retailer 9£706 GBP
Retailer 11£755 GBP
Retailer 14£770 GBP
Retailer 18£810 GBP
Retailer 6£864 GBP
Retailer 2£1,033 GBP
Retailer 8£1,098 GBP
Retailer 3£1,187 GBP
Retailer 16£1,249 GBP
Retailer 13£1,472 GBP
Retailer 19£1,911 GBP
Retailer 20£2,232 GBP
Retailer 5£2,348 GBP
Retailer 15£2,560 GBP
Retailer 12£2,691 GBP
Retailer 10£2,885 GBP
Brilliant Earth£3,239 GBP

18 data points across 20 retailers

20 retailers£586 GBP to £3,239 GBP

A
Cheapest Retailer
-
£586 GBP
$785 USD
A
Retailer 2
-
£637 GBP
$854 USD
View
A
Retailer 3
-
£679 GBP
$910 USD
View
Retailer 4
-
£706 GBP
$946 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
£755 GBP
$1,011 USD
View
Final sale: no returns
A
Retailer 6
-
£770 GBP
View
A
Retailer 7
-
£810 GBP
$1,085 USD
View
A
Retailer 8
-
£864 GBP
$1,158 USD
View
A
Retailer 9
-
£1,033 GBP
View
B+
Retailer 10
-
£1,098 GBP
$1,471 USD
View
B+
Retailer 11
-
£1,187 GBP
$1,591 USD
View
B+
Retailer 12
-
£1,249 GBP
ZAR 27,035 ZAR
View
B+
Retailer 13
-
£1,472 GBP
$1,972 USD
View
B+
Retailer 14
-
£1,911 GBP
$2,560 USD
View
B
Retailer 15
-
£2,232 GBP
$2,991 USD
View
B
Retailer 16
-
£2,348 GBP
$3,147 USD
View
B
Retailer 17
-
£2,560 GBP
View
B
Retailer 18
-
£2,691 GBP
SGD 4,873 SGD
View
B
Retailer 19
-
£2,885 GBP
$3,865 USD
View
Most Expensive
B
Brilliant Earth
21826816A · Oct 30
£3,239 GBP
$4,340 USD
View
19 more retailers have this diamond
Prices start from £586 GBPSave up to £2,653 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
1.83ct Heart
£586 GBP