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Heart|Lab Grown|IGI

1.66ct E VS2 Heart Lab Grown Diamond

EX • E/VS2 • IGI LG754558633

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG754558633

Diamond specifications and retailer prices

From £162 GBP
$217 USD
As of October 30, 2026
Save £677 GBP (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £839 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 1.66ct lab-grown heart diamond

This 1.66ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG754558633 or 754558633. Listed at 12 retailers as of October 30, 2026, with prices from £162 to £839, a £677 spread on the same certified stone. With Clarity lists it at £839. 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
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle43.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754558633
Dimensions7.42 × 8.03 × 4.90 mm
L/W Ratio1.08
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.42 mm8.03 mm1.66 ctE / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754558633
Side View
Table 59.0%Crown 36.1°Girdle: MED-STKPavilion 43.3°Culet: NoneDepth 61.0%

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 30
Current: £804 GBP|Low: £157 GBP|High: £877 GBP|Avg: £567 GBP|-5.1%
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
With Clarity
November 1, 2026
Retailer 12£162 GBP
Retailer 9£188 GBP
Retailer 7£236 GBP
Retailer 6£335 GBP
Retailer 3£383 GBP
Retailer 11£451 GBP
Retailer 5£560 GBP
Retailer 2£645 GBP
Retailer 8£647 GBP
Retailer 4£698 GBP
Retailer 10£728 GBP
Retailer 1£804 GBP
Retailer 13£811 GBP
With Clarity£833 GBP

28 data points across 14 retailers

12 retailers£162 GBP to £839 GBP

A
Cheapest Retailer
-
£162 GBP
$217 USD
A
Retailer 2
-
£188 GBP
$252 USD
View
Retailer 3
-
£236 GBP
View
Price last confirmed 15 days ago
A
Retailer 4
-
£335 GBP
€428 EUR
View
B+
Retailer 5
-
£451 GBP
$604 USD
View
B+
Retailer 6
-
£530 GBP
$710 USD
View
B+
Retailer 7
-
£645 GBP
$864 USD
View
B+
Retailer 8
-
£647 GBP
$867 USD
View
B+
Retailer 9
-
£728 GBP
$976 USD
View
B
Retailer 10
-
£804 GBP
View
Retailer 11
-
£811 GBP
SGD 1,469 SGD
View
Price last confirmed 19 days ago
Most Expensive
B
With Clarity
754558633 · Oct 31
£839 GBP
$1,124 USD
View
11 more retailers have this diamond
Prices start from £162 GBPSave up to £677 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 Heart
£162 GBP