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Heart|Lab Grown|IGI

1.63ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG840632399

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840632399

Diamond specifications and retailer prices

From £524 GBP
$702 USD
As of October 30, 2026
Save £2,417 GBP (82%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,941 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.63ct lab-grown heart diamond

This 1.63ct 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 LG840632399 or 840632399. Listed at 20 retailers as of October 30, 2026, with prices from £524 to £2,941, a £2,417 spread on the same certified stone. Brilliant Earth lists it at £2,941. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.63
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840632399
Dimensions7.36 × 8.42 × 4.51 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
7.36 mm8.42 mm1.63 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840632399
Side View
Table 56.0%Crown 34.6°Girdle: MED-STKPavilion 35.5°Culet: NoneDepth 53.6%

Caratlytics Score

How it works →
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: £2,941 GBP|Low: £524 GBP|High: £3,896 GBP|Avg: £1,439 GBP|-24.5%
Brilliant Earth
Retailer 2
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Retailer 11
Retailer 12
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Retailer 20
October 31, 2026
Retailer 7£524 GBP
Retailer 4£570 GBP
Retailer 18£608 GBP
Retailer 9£631 GBP
Retailer 11£672 GBP
Retailer 13£689 GBP
Retailer 19£739 GBP
Retailer 6£791 GBP
Retailer 3£965 GBP
Retailer 14£974 GBP
Retailer 17£988 GBP
Retailer 16£1,117 GBP
Retailer 2£1,361 GBP
Retailer 20£1,709 GBP
Retailer 8£2,006 GBP
Retailer 5£2,096 GBP
Retailer 15£2,400 GBP
Retailer 12£2,409 GBP
Retailer 10£2,569 GBP
Brilliant Earth£2,941 GBP

24 data points across 20 retailers

20 retailers£524 GBP to £2,941 GBP

A
Cheapest Retailer
-
£524 GBP
$702 USD
A
Retailer 2
-
£570 GBP
$764 USD
View
A
Retailer 3
-
£608 GBP
$814 USD
View
Retailer 4
-
£631 GBP
$846 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
£672 GBP
$901 USD
View
Final sale: no returns
A
Retailer 6
-
£689 GBP
View
A
Retailer 7
-
£739 GBP
$990 USD
View
A
Retailer 8
-
£791 GBP
$1,060 USD
View
B+
Retailer 9
-
£965 GBP
$1,293 USD
View
A
Retailer 10
-
£974 GBP
View
B+
Retailer 11
-
£988 GBP
$1,324 USD
View
B+
Retailer 12
-
£1,117 GBP
ZAR 24,185 ZAR
View
B+
Retailer 13
-
£1,361 GBP
$1,824 USD
View
B+
Retailer 14
-
£1,709 GBP
$2,290 USD
View
B+
Retailer 15
-
£2,006 GBP
$2,688 USD
View
B
Retailer 16
-
£2,096 GBP
$2,808 USD
View
B
Retailer 17
-
£2,400 GBP
View
B
Retailer 18
-
£2,409 GBP
SGD 4,362 SGD
View
B
Retailer 19
-
£2,569 GBP
$3,442 USD
View
Most Expensive
B
Brilliant Earth
21738407A · Oct 30
£2,941 GBP
$3,940 USD
View
19 more retailers have this diamond
Prices start from £524 GBPSave up to £2,417 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
1.63ct Heart
£524 GBP