CaratHunter
Plans
Oval|Lab Grown|IGI

1.66ct E VS1 Oval Lab Grown Diamond

ID • E/VS1 • IGI LG835639081

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG835639081

Diamond specifications and retailer prices

From £186 GBP
$249 USD
As of October 29, 2026
Save £741 GBP (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,697 GBP at Queensmith · As of October 20, 2026
View at Queensmith

About this 1.66ct lab-grown oval diamond

This 1.66ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG835639081 or 835639081. Listed at 19 retailers as of October 29, 2026, with a 399% 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

1.66
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835639081
Dimensions9.48 × 6.76 × 4.24 mm
L/W Ratio1.40
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.48 mm6.76 mm1.66 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835639081
Side View
Table 60.0%Crown 35.5°Girdle: THN-MEDPavilion 41.4°Culet: NoneDepth 62.7%

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: £437 GBP|Low: £165 GBP|High: £927 GBP|Avg: £482 GBP|+8.7%
Retailer 1
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
Retailer 19
October 31, 2026
Retailer 7£186 GBP
Retailer 6£207 GBP
Retailer 10£213 GBP
Retailer 3£215 GBP
Retailer 15£230 GBP
Retailer 13£270 GBP
Retailer 9£368 GBP
Retailer 17£386 GBP
Retailer 19£395 GBP
Retailer 16£421 GBP
Retailer 1£437 GBP
Retailer 2£453 GBP
Retailer 4£536 GBP
Retailer 18£740 GBP
Retailer 12£742 GBP
Retailer 8£778 GBP
Retailer 11£806 GBP
Retailer 5£905 GBP
Retailer 14£927 GBP

32 data points across 19 retailers

19 retailers£186 GBP to £927 GBP

A
Cheapest Retailer
-
£186 GBP
$249 USD
A
Retailer 2
-
£207 GBP
$277 USD
View
Final sale: no returns
Retailer 3
-
£213 GBP
$285 USD
View
Price last confirmed 16 days ago
A
Retailer 4
-
£215 GBP
$288 USD
View
A
Retailer 5
-
£230 GBP
$308 USD
View
A
Retailer 6
-
£270 GBP
View
A
Retailer 7
-
£386 GBP
$517 USD
View
A
Retailer 8
-
£395 GBP
ZAR 8,554 ZAR
View
A
Retailer 9
-
£421 GBP
$564 USD
View
A
Retailer 10
-
£437 GBP
View
A
Retailer 11
-
£453 GBP
$607 USD
View
B+
Retailer 12
-
£536 GBP
A$1,105 AUD
View
B+
Retailer 13
-
£740 GBP
$991 USD
View
B+
Retailer 14
-
£742 GBP
$994 USD
View
B+
Retailer 15
-
£778 GBP
$1,042 USD
View
Retailer 16
-
£806 GBP
A$1,661 AUD
View
Price last confirmed 31 days ago
B
Retailer 17
-
£905 GBP
$1,213 USD
View
B
Retailer 18
-
£927 GBP
View
Most Expensive
Queensmith
LG835639081 · Oct 20
£1,697 GBP
View
Price last confirmed 11 days ago
18 more retailers have this diamond
Prices start from £186 GBPSave up to £741 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
1.66ct Oval
£186 GBP