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Radiant|Lab Grown|IGI

1.74ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG649400592

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

Certificate IGI LG649400592

Diamond specifications and retailer prices

From £281 GBP
$374 USD
As of October 28, 2026
Save £2,347 GBP (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,996 GBP at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 1.74ct lab-grown radiant diamond

This 1.74ct 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 LG649400592 or 649400592. Listed at 14 retailers as of October 28, 2026, with a 836% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.74
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG649400592
Dimensions8.74 × 5.95 × 3.89 mm
L/W Ratio1.47
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.74 mm5.95 mm1.74 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG649400592
Side View
Table 65.0%Crown 41°Girdle: ThickPavilion 34°Culet: NoneDepth 65.0%

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 28
Current: £2,628 GBP|Low: £281 GBP|High: £2,996 GBP|Avg: £1,256 GBP|-12.3%
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
October 29, 2026
Retailer 13£281 GBP
Retailer 10£356 GBP
Retailer 7£428 GBP
Retailer 3£504 GBP
Retailer 14£591 GBP
Retailer 2£619 GBP
Retailer 11£779 GBP
Retailer 8£799 GBP
Retailer 12£1,156 GBP
Retailer 5£1,223 GBP
Retailer 4£1,249 GBP
Retailer 6£2,150 GBP
Retailer 9£2,230 GBP
Brilliant Earth£2,628 GBP

4 data points across 14 retailers

14 retailers£281 GBP to £2,628 GBP

A
Cheapest Retailer
-
£281 GBP
$374 USD
Final sale: no returns
A
Retailer 2
-
£356 GBP
View
A
Retailer 3
-
£428 GBP
$570 USD
View
A
Retailer 4
-
£504 GBP
$671 USD
View
A
Retailer 5
-
£591 GBP
ZAR 12,718 ZAR
View
A
Retailer 6
-
£619 GBP
View
A
Retailer 7
-
£779 GBP
$1,037 USD
View
A
Retailer 8
-
£799 GBP
A$1,636 AUD
View
B+
Retailer 9
-
£1,156 GBP
$1,540 USD
View
B+
Retailer 10
-
£1,223 GBP
$1,629 USD
View
B+
Retailer 11
-
£1,249 GBP
SGD 2,247 SGD
View
B
Retailer 12
-
£2,230 GBP
$2,970 USD
View
B
Retailer 13
-
£2,628 GBP
$3,500 USD
View
Most Expensive
Brilliant Earth
13718859B · Oct 21
£2,996 GBP
$3,990 USD
View
Price last confirmed 8 days ago
13 more retailers have this diamond
Prices start from £281 GBPSave up to £2,347 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
1.74ct Radiant
£281 GBP