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Round|Lab Grown|IGI

1.54ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG815677024

Shape and cutting style on the report: Round brilliant

Certificate IGI LG815677024

Diamond specifications and retailer prices

From £250 GBP
$335 USD
As of October 29, 2026
Save £1,720 GBP (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,970 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.54ct lab-grown round diamond

This 1.54ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815677024 or 815677024. Listed at 22 retailers as of October 29, 2026, with prices from £250 to £1,970, a £1,720 spread on the same certified stone. Brilliant Earth lists it at £1,970. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815677024
Dimensions7.48 × 7.41 × 4.54 mm
L/W Ratio1.01
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
7.48 mm7.41 mm1.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815677024
Side View
Table 58.0%Crown 34.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
A
Excellent
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: Oct 29
Current: £1,970 GBP|Low: £250 GBP|High: £3,351 GBP|Avg: £764 GBP|-41.2%
Brilliant Earth
Retailer 2
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Retailer 22
October 30, 2026
Retailer 14£250 GBP
Retailer 8£279 GBP
Retailer 9£290 GBP
Retailer 7£310 GBP
Retailer 15£319 GBP
Retailer 16£398 GBP
Retailer 22£437 GBP
Retailer 4£448 GBP
Retailer 18£502 GBP
Retailer 21£533 GBP
Retailer 17£554 GBP
Retailer 12£558 GBP
Retailer 10£703 GBP
Retailer 20£722 GBP
Retailer 5£746 GBP
Retailer 2£761 GBP
Retailer 6£996 GBP
Retailer 11£1,029 GBP
Retailer 13£1,171 GBP
Retailer 3£1,212 GBP
Retailer 19£1,248 GBP
Brilliant Earth£1,970 GBP

21 data points across 22 retailers

22 retailers£250 GBP to £1,970 GBP

A
Cheapest Retailer
-
£250 GBP
$335 USD
A
Retailer 2
-
£279 GBP
$374 USD
View
Final sale: no returns
A
Retailer 3
-
£290 GBP
$388 USD
View
A
Retailer 4
-
£310 GBP
$415 USD
View
A
Retailer 5
-
£319 GBP
$427 USD
View
A
Retailer 6
-
£398 GBP
View
A
Retailer 7
-
£437 GBP
$585 USD
View
A
Retailer 8
-
£448 GBP
$600 USD
View
A
Retailer 9
-
£502 GBP
€641 EUR
View
A
Retailer 10
-
£533 GBP
ZAR 11,527 ZAR
View
A
Retailer 11
-
£554 GBP
View
A
Retailer 12
-
£558 GBP
$748 USD
View
A
Retailer 13
-
£703 GBP
$942 USD
View
A
Retailer 14
-
£722 GBP
A$1,489 AUD
View
A
Retailer 15
-
£746 GBP
$1,000 USD
View
A
Retailer 16
-
£761 GBP
$1,019 USD
View
B+
Retailer 17
-
£996 GBP
$1,335 USD
View
B+
Retailer 18
-
£1,029 GBP
$1,378 USD
View
B+
Retailer 19
-
£1,171 GBP
$1,569 USD
View
B+
Retailer 20
-
£1,212 GBP
$1,624 USD
View
B+
Retailer 21
-
£1,248 GBP
View
Most Expensive
B
Brilliant Earth
21017815A · Oct 30
£1,970 GBP
$2,640 USD
View
21 more retailers have this diamond
Prices start from £250 GBPSave up to £1,720 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 Round
£250 GBP