Radiant|Lab Grown|IGI

1.67ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG636400270

Certificate IGI LG636400270

Diamond specifications and retailer prices

From £469 GBP
$628 USD
As of October 30, 2026
Save £1,912 GBP (80%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,381 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.67ct lab-grown radiant diamond

This 1.67ct 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 LG636400270 or 636400270. Listed at 7 retailers as of October 29, 2026, with prices from £469 to £2,381, a £1,912 spread on the same certified stone. Brilliant Earth lists it at £2,381. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.67
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG636400270
Dimensions6.01 × 6.01 × 3.99 mm
L/W Ratio1.00
Top View
6.01 mm6.01 mm1.67 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG636400270
Side View
Table 64.0%CrownGirdle: MediumPavilionCulet: NoneDepth 66.4%

Caratlytics Score

How it works →
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 30
Current: £2,381 GBP|Low: £334 GBP|High: £2,455 GBP|Avg: £1,127 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 23, 2026
Retailer 8£334 GBP
Retailer 5£469 GBP
Retailer 2£609 GBP
Retailer 4£849 GBP
Retailer 7£995 GBP
Retailer 6£1,143 GBP
Retailer 10£1,307 GBP
Retailer 9£1,441 GBP
Retailer 3£1,761 GBP
Brilliant Earth£2,381 GBP

15 data points across 10 retailers

7 retailers£469 GBP to £2,381 GBP

A
Cheapest Retailer
-
£469 GBP
$628 USD
A
Retailer 2
-
£609 GBP
€777 EUR
View
B+
Retailer 3
-
£849 GBP
$1,137 USD
View
Retailer 4
-
£1,761 GBP
$2,360 USD
View
Price last confirmed 11 days ago
Retailer 5
-
£2,067 GBP
$2,770 USD
View
Price last confirmed 87 days ago
Retailer 6
-
£2,358 GBP
$3,160 USD
View
Price last confirmed 22 days ago
Most Expensive
B
Brilliant Earth
21311935A · Oct 29
£2,381 GBP
$3,190 USD
View
6 more retailers have this diamond
Prices start from £469 GBPSave up to £1,912 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
1.67ct Radiant
£469 GBP