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Round|Lab Grown|IGI

1.54ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG778644698

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778644698

Diamond specifications and retailer prices

From £237 GBP
$315 USD
As of October 29, 2026
Save £1,881 GBP (89%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £2,118 GBP at Brilliant Earth · As of October 27, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG778644698 or 778644698. Listed at 24 retailers as of October 27, 2026, with prices from £237 to £2,118, a £1,881 spread on the same certified stone. Brilliant Earth lists it at £2,118. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778644698
Dimensions7.39 × 7.44 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
7.39 mm7.44 mm1.54 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778644698
Side View
Table 57.0%Crown 33.7°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.4%

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: £2,118 GBP|Low: £231 GBP|High: £2,125 GBP|Avg: £698 GBP|-0.4%
Brilliant Earth
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October 30, 2026
Retailer 20£237 GBP
Retailer 21£265 GBP
Retailer 7£276 GBP
Retailer 10£294 GBP
Retailer 15£294 GBP
Retailer 6£409 GBP
Retailer 13£442 GBP
Retailer 23£473 GBP
Retailer 14£478 GBP
Retailer 5£506 GBP
Retailer 16£512 GBP
Retailer 17£522 GBP
Retailer 18£682 GBP
Retailer 4£686 GBP
Retailer 11£727 GBP
Retailer 3£935 GBP
Retailer 12£947 GBP
Retailer 19£978 GBP
Retailer 9£1,041 GBP
Retailer 2£1,172 GBP
Retailer 22£1,183 GBP
Retailer 8£1,603 GBP
Brilliant Earth£2,118 GBP

26 data points across 23 retailers

24 retailers£237 GBP to £2,118 GBP

A
Cheapest Retailer
-
£237 GBP
$315 USD
A
Retailer 2
-
£265 GBP
$353 USD
View
Final sale: no returns
A
Retailer 3
-
£276 GBP
$367 USD
View
A
Retailer 4
-
£294 GBP
$392 USD
View
A
Retailer 5
-
£294 GBP
$392 USD
View
A
Retailer 6
-
£409 GBP
$545 USD
View
A
Retailer 7
-
£442 GBP
View
A
Retailer 8
-
£473 GBP
€600 EUR
View
A
Retailer 9
-
£478 GBP
$637 USD
View
A
Retailer 10
-
£506 GBP
ZAR 10,887 ZAR
View
A
Retailer 11
-
£512 GBP
A$1,048 AUD
View
A
Retailer 12
-
£522 GBP
View
A
Retailer 13
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£682 GBP
$908 USD
View
A
Retailer 14
-
£686 GBP
A$1,406 AUD
View
B+
Retailer 15
-
£727 GBP
$968 USD
View
B+
Retailer 16
-
£935 GBP
SGD 1,682 SGD
View
B+
Retailer 17
-
£947 GBP
$1,261 USD
View
B+
Retailer 18
-
£978 GBP
$1,302 USD
View
B+
Retailer 19
-
£1,041 GBP
$1,386 USD
View
Retailer 20
-
£1,063 GBP
A$2,178 AUD
View
Price last confirmed 29 days ago
B+
Retailer 21
-
£1,172 GBP
$1,561 USD
View
B+
Retailer 22
-
£1,183 GBP
View
Retailer 23
-
£1,603 GBP
$2,135 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
20665183A · Oct 27
£2,118 GBP
$2,820 USD
View
23 more retailers have this diamond
Prices start from £237 GBPSave up to £1,881 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
£237 GBP