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Heart|Lab Grown|IGI

1.54ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG831604179

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831604179

Diamond specifications and retailer prices

From £553 GBP
As of November 4, 2026
Save £2,729 GBP (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £3,282 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.54ct lab-grown heart diamond

This 1.54ct 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 LG831604179 or 831604179. Listed at 21 retailers as of November 4, 2026, with prices from £553 to £3,282, a £2,729 spread on the same certified stone. Brilliant Earth lists it at £3,282. 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

1.54
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.7°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831604179
Dimensions7.16 × 8.00 × 4.70 mm
L/W Ratio1.12
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
7.16 mm8.00 mm1.54 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831604179
Side View
Table 57.0%Crown 31.7°Girdle: MED-STKPavilion 40°Culet: NoneDepth 58.8%

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: £3,282 GBP|Low: £553 GBP|High: £4,571 GBP|Avg: £1,570 GBP|-10.7%
Brilliant Earth
Retailer 2
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Retailer 21
November 5, 2026
Retailer 18£553 GBP
Retailer 19£601 GBP
Retailer 9£618 GBP
Retailer 4£641 GBP
Retailer 13£722 GBP
Retailer 12£749 GBP
Retailer 6£770 GBP
Retailer 7£818 GBP
Retailer 8£887 GBP
Retailer 21£930 GBP
Retailer 2£1,019 GBP
Retailer 16£1,177 GBP
Retailer 17£1,373 GBP
Retailer 5£1,802 GBP
Retailer 15£2,080 GBP
Retailer 10£2,158 GBP
Retailer 3£2,174 GBP
Retailer 14£2,210 GBP
Retailer 20£2,516 GBP
Retailer 11£3,052 GBP
Brilliant Earth£3,282 GBP

9 data points across 21 retailers

21 retailers£553 GBP to £3,282 GBP

A
Cheapest Retailer
-
£553 GBP
A
Retailer 2
-
£601 GBP
View
A
Retailer 3
-
£618 GBP
View
Final sale: no returns
A
Retailer 4
-
£641 GBP
View
A
Retailer 5
-
£722 GBP
View
A
Retailer 6
-
£749 GBP
View
A
Retailer 7
-
£770 GBP
View
A
Retailer 8
-
£818 GBP
View
B+
Retailer 9
-
£887 GBP
View
B+
Retailer 10
-
£930 GBP
View
B+
Retailer 11
-
£1,019 GBP
View
B+
Retailer 12
-
£1,177 GBP
View
B+
Retailer 13
-
£1,373 GBP
View
B
Retailer 14
-
£1,802 GBP
View
B
Retailer 15
-
£2,080 GBP
View
B
Retailer 16
-
£2,158 GBP
View
B
Retailer 17
-
£2,174 GBP
View
B
Retailer 18
-
£2,210 GBP
View
B
Retailer 19
-
£2,516 GBP
View
B
Retailer 20
-
£3,052 GBP
View
Most Expensive
B
Brilliant Earth
22337153A · Nov 4
£3,282 GBP
$4,430 USD
View
20 more retailers have this diamond
Prices start from £553 GBPSave up to £2,729 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
1.54ct Heart
£553 GBP