Radiant|Lab Grown|IGI

1.54ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG671426516

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG671426516

Diamond specifications and retailer prices

From £212 GBP
$284 USD
As of October 30, 2026
Save £2,430 GBP (92%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,642 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.54ct lab-grown radiant diamond

This 1.54ct lab-grown radiant 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 LG671426516 or 671426516. Listed at 18 retailers as of October 30, 2026, with prices from £212 to £2,642, a £2,430 spread on the same certified stone. Brilliant Earth lists it at £2,642. 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 angle46.9°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG671426516
Dimensions8.07 × 5.69 × 3.88 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.07 mm5.69 mm1.54 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG671426516
Side View
Table 67.0%Crown 46.9°Girdle: MediumPavilion 36.2°Culet: NoneDepth 68.2%

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 30
Current: £2,642 GBP|Low: £210 GBP|High: £2,702 GBP|Avg: £737 GBP|-2.2%
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 31, 2026
Retailer 6£212 GBP
Retailer 5£246 GBP
Retailer 10£246 GBP
Retailer 9£338 GBP
Retailer 16£340 GBP
Retailer 3£351 GBP
Retailer 12£351 GBP
Retailer 11£453 GBP
Retailer 2£621 GBP
Retailer 7£622 GBP
Retailer 18£677 GBP
Retailer 13£808 GBP
Retailer 8£870 GBP
Retailer 17£934 GBP
Retailer 14£1,094 GBP
Retailer 15£1,171 GBP
Retailer 4£1,888 GBP
Brilliant Earth£2,642 GBP

35 data points across 18 retailers

18 retailers£212 GBP to £2,642 GBP

A
Cheapest Retailer
-
£212 GBP
$284 USD
A
Retailer 2
-
£246 GBP
$330 USD
View
Final sale: no returns
A
Retailer 3
-
£246 GBP
$330 USD
View
A
Retailer 4
-
£338 GBP
$453 USD
View
A
Retailer 5
-
£340 GBP
$456 USD
View
A
Retailer 6
-
£351 GBP
$470 USD
View
A
Retailer 7
-
£351 GBP
$470 USD
View
A
Retailer 8
-
£453 GBP
€578 EUR
View
A
Retailer 9
-
£621 GBP
$832 USD
View
A
Retailer 10
-
£622 GBP
$833 USD
View
A
Retailer 11
-
£677 GBP
A$1,396 AUD
View
B+
Retailer 12
-
£808 GBP
$1,083 USD
View
B+
Retailer 13
-
£870 GBP
$1,166 USD
View
B+
Retailer 14
-
£934 GBP
$1,251 USD
View
B+
Retailer 15
-
£1,094 GBP
A$2,255 AUD
View
B+
Retailer 16
-
£1,171 GBP
View
B
Retailer 17
-
£1,888 GBP
$2,530 USD
View
Most Expensive
B
Brilliant Earth
16298721A · Oct 31
£2,642 GBP
$3,540 USD
View
17 more retailers have this diamond
Prices start from £212 GBPSave up to £2,430 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 Radiant
£212 GBP