Marquise|Lab Grown|IGI

1.20ct E VS1 Marquise Lab Grown Diamond

ID • E/VS1 • IGI LG840662166

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG840662166

Diamond specifications and retailer prices

From $203 USD
As of October 28, 2026
Save $933 USD (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,136 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1.2ct lab-grown marquise diamond

This 1.2ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG840662166 or 840662166. Listed at 10 retailers as of October 28, 2026, with prices from $203 to $1,136, a $933 spread on the same certified stone. Reve Diamonds lists it at $1,136. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
E
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840662166
Dimensions11.09 × 5.51 × 3.37 mm
L/W Ratio2.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.09 mm5.51 mm1.20 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840662166
Side View
Table 67.0%Crown 32.8°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.2%

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 28
Current: $406 USD|Low: $203 USD|High: $1,136 USD|Avg: $591 USD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Reve Diamonds
October 29, 2026
Retailer 7$203 USD
Retailer 3$284 USD
Retailer 4$292 USD
Retailer 1$406 USD
Retailer 8$426 USD
Retailer 5$551 USD
Retailer 6$766 USD
Retailer 9$780 USD
Retailer 2$1,060 USD
Reve Diamonds$1,136 USD

28 data points across 10 retailers

10 retailers$203 USD to $1,136 USD

A
Cheapest Retailer
-
$203 USD
Final sale: no returns
A
Retailer 2
-
$284 USD
£224 GBP
View
B+
Retailer 3
-
$292 USD
View
A
Retailer 4
-
$406 USD
£320 GBP
View
A
Retailer 5
-
$426 USD
View
B+
Retailer 6
-
$551 USD
A$847 AUD
View
B
Retailer 7
-
$766 USD
View
B
Retailer 8
-
$780 USD
View
B
Retailer 9
-
$1,060 USD
£835 GBP
View
Most Expensive
B
Reve Diamonds
20A751231 · Oct 28
$1,136 USD
View
9 more retailers have this diamond
Prices start from $203 USDSave up to $933 USD

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
1.20ct Marquise
$203 USD