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Round|Lab Grown|IGI

1.54ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG786646543

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786646543

Diamond specifications and retailer prices

From £321 GBP
$430 USD
As of October 29, 2026
Save £3,030 GBP (90%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £3,351 GBP at Brilliant Earth · As of October 29, 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 LG786646543 or 786646543. Listed at 24 retailers as of October 29, 2026, with prices from £321 to £3,351, a £3,030 spread on the same certified stone. Brilliant Earth lists it at £3,351. 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 angle35.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786646543
Dimensions7.34 × 7.39 × 4.59 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
7.34 mm7.39 mm1.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786646543
Side View
Table 57.0%Crown 35.7°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.3%

Caratlytics Score

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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 29
Current: £3,351 GBP|Low: £308 GBP|High: £3,448 GBP|Avg: £902 GBP|-2.8%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 30, 2026
Retailer 17£321 GBP
Retailer 6£360 GBP
Retailer 8£360 GBP
Retailer 9£398 GBP
Retailer 18£398 GBP
Retailer 15£508 GBP
Retailer 10£534 GBP
Retailer 5£578 GBP
Retailer 13£624 GBP
Retailer 2£655 GBP
Retailer 14£684 GBP
Retailer 11£927 GBP
Retailer 16£961 GBP
Retailer 4£1,263 GBP
Retailer 7£1,280 GBP
Retailer 12£1,470 GBP
Retailer 3£1,490 GBP
Brilliant Earth£3,351 GBP

43 data points across 18 retailers

24 retailers£321 GBP to £3,351 GBP

A
Cheapest Retailer
-
£321 GBP
$430 USD
A
Retailer 2
-
£360 GBP
$482 USD
View
Final sale: no returns
A
Retailer 3
-
£360 GBP
$482 USD
View
A
Retailer 4
-
£398 GBP
$533 USD
View
A
Retailer 5
-
£398 GBP
$533 USD
View
A
Retailer 6
-
£439 GBP
HK$4,600 HKD
View
A
Retailer 7
-
£508 GBP
$680 USD
View
A
Retailer 8
-
£534 GBP
$715 USD
View
A
Retailer 9
-
£578 GBP
$774 USD
View
A
Retailer 10
-
£624 GBP
€796 EUR
View
A
Retailer 11
-
£655 GBP
View
A
Retailer 12
-
£684 GBP
ZAR 14,809 ZAR
View
A
Retailer 13
-
£771 GBP
$1,033 USD
View
B+
Retailer 14
-
£927 GBP
A$1,911 AUD
View
B+
Retailer 15
-
£961 GBP
$1,288 USD
View
B+
Retailer 16
-
£1,263 GBP
SGD 2,287 SGD
View
B+
Retailer 17
-
£1,280 GBP
$1,715 USD
View
B+
Retailer 18
-
£1,304 GBP
$1,747 USD
View
B
Retailer 19
-
£1,439 GBP
$1,928 USD
View
B+
Retailer 20
-
£1,470 GBP
View
B+
Retailer 21
-
£1,490 GBP
$1,996 USD
View
B
Retailer 22
-
£1,723 GBP
$2,308 USD
View
B
Retailer 23
-
£2,171 GBP
View
Most Expensive
B
Brilliant Earth
21370634A · Oct 29
£3,351 GBP
$4,490 USD
View
23 more retailers have this diamond
Prices start from £321 GBPSave up to £3,030 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
£321 GBP