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Heart|Lab Grown|IGI

1.53ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG840617129

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840617129

Diamond specifications and retailer prices

From £622 GBP
As of November 4, 2026
Save £2,578 GBP (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,200 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.53ct lab-grown heart diamond

This 1.53ct 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 very-good cut grade and certified by IGI LG840617129 or 840617129. Listed at 13 retailers as of November 2, 2026, with prices from £622 to £3,200, a £2,578 spread on the same certified stone. Brilliant Earth lists it at £3,200. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.53
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840617129
Dimensions7.11 × 7.82 × 4.72 mm
L/W Ratio1.10
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
7.11 mm7.82 mm1.53 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840617129
Side View
Table 59.0%Crown 37.6°Girdle: MED-THKPavilion 39.8°Culet: NoneDepth 60.4%

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: Nov 4
Current: £3,200 GBP|Low: £622 GBP|High: £3,637 GBP|Avg: £1,448 GBP|-12.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 13£622 GBP
Retailer 6£727 GBP
Retailer 4£749 GBP
Retailer 7£778 GBP
Retailer 8£1,024 GBP
Retailer 2£1,027 GBP
Retailer 11£1,045 GBP
Retailer 10£1,185 GBP
Retailer 12£1,534 GBP
Retailer 5£2,117 GBP
Retailer 3£2,171 GBP
Retailer 9£2,533 GBP
Brilliant Earth£3,200 GBP

21 data points across 13 retailers

13 retailers£622 GBP to £3,200 GBP

A
Cheapest Retailer
-
£622 GBP
Final sale: no returns
A
Retailer 2
-
£727 GBP
View
A
Retailer 3
-
£749 GBP
View
A
Retailer 4
-
£778 GBP
View
B+
Retailer 5
-
£1,024 GBP
View
B+
Retailer 6
-
£1,027 GBP
View
B+
Retailer 7
-
£1,045 GBP
View
B+
Retailer 8
-
£1,185 GBP
View
B+
Retailer 9
-
£1,534 GBP
View
B
Retailer 10
-
£2,117 GBP
View
B
Retailer 11
-
£2,171 GBP
View
B
Retailer 12
-
£2,533 GBP
View
Most Expensive
B
Brilliant Earth
22132475A · Nov 2
£3,200 GBP
$4,320 USD
View
12 more retailers have this diamond
Prices start from £622 GBPSave up to £2,578 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
1.53ct Heart
£622 GBP