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Heart|Lab Grown|IGI

1.54ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG818667577

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818667577

Diamond specifications and retailer prices

From £460 GBP
As of November 4, 2026
Save £2,248 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,708 GBP at With Clarity · As of November 5, 2026
View at With Clarity

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 top-tier cut grade and certified by IGI LG818667577 or 818667577. Listed at 18 retailers as of November 4, 2026, with prices from £460 to £2,708, a £2,248 spread on the same certified stone. With Clarity lists it at £2,708. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818667577
Dimensions6.84 × 7.93 × 4.88 mm
L/W Ratio1.16
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
6.84 mm7.93 mm1.54 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818667577
Side View
Table 55.0%Crown 36.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £885 GBP|Low: £460 GBP|High: £3,212 GBP|Avg: £1,353 GBP|-6.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
With Clarity
November 5, 2026
Retailer 8£460 GBP
Retailer 11£516 GBP
Retailer 2£531 GBP
Retailer 3£570 GBP
Retailer 12£667 GBP
Retailer 13£856 GBP
Retailer 10£873 GBP
Retailer 1£885 GBP
Retailer 7£1,035 GBP
Retailer 15£1,250 GBP
Retailer 9£1,501 GBP
Retailer 5£1,750 GBP
Retailer 16£1,843 GBP
Retailer 4£1,925 GBP
Retailer 6£2,248 GBP
Retailer 14£2,548 GBP
With Clarity£2,708 GBP

30 data points across 17 retailers

18 retailers£460 GBP to £2,708 GBP

A+
Cheapest Retailer
-
£460 GBP
A
Retailer 2
-
£516 GBP
View
A
Retailer 3
-
£531 GBP
View
Final sale: no returns
A
Retailer 4
-
£570 GBP
View
Retailer 5
-
£571 GBP
View
Price last confirmed 20 days ago
A
Retailer 6
-
£667 GBP
View
A
Retailer 7
-
£856 GBP
View
A
Retailer 8
-
£873 GBP
View
A
Retailer 9
-
£885 GBP
View
B+
Retailer 10
-
£1,035 GBP
View
B+
Retailer 11
-
£1,250 GBP
View
B+
Retailer 12
-
£1,501 GBP
View
B+
Retailer 13
-
£1,750 GBP
View
B+
Retailer 14
-
£1,843 GBP
View
B+
Retailer 15
-
£1,925 GBP
View
B
Retailer 16
-
£2,248 GBP
View
B
Retailer 17
-
£2,548 GBP
View
Most Expensive
B
With Clarity
818667577 · Nov 5
£2,708 GBP
$3,656 USD
View
17 more retailers have this diamond
Prices start from £460 GBPSave up to £2,248 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
£460 GBP