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Marquise|Lab Grown|IGI

1.20ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG500165197

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG500165197

Diamond specifications and retailer prices

From $1,006 USD
As of November 2, 2026
Save $1,181 USD (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,216 USD at Flawless Fine Jewelry · As of November 2, 2026
View at Flawless Fine Jewelry

About this 1.2ct lab-grown marquise diamond

This 1.2ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG500165197 or 500165197. Listed at 16 retailers as of October 31, 2026, with a 117% 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

1.20
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500165197
Dimensions11.56 × 5.56 × 3.30 mm
L/W Ratio2.08
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.56 mm5.56 mm1.20 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500165197
Side View
Table 61.5%Crown 36.1°Girdle: THN-STKPavilion 40.3°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,216 USD|Low: $966 USD|High: $4,011 USD|Avg: $1,883 USD
Flawless Fine Jewelry
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
November 2, 2026
Retailer 10$1,006 USD
Retailer 3$1,095 USD
Retailer 5$1,126 USD
Retailer 11$1,150 USD
Retailer 4$1,167 USD
Retailer 12$1,167 USD
Retailer 6$1,340 USD
Retailer 2$1,682 USD
Retailer 13$1,864 USD
Retailer 9$2,145 USD
Retailer 14$2,187 USD
Retailer 8$3,041 USD
Flawless Fine Jewelry$3,216 USD
Retailer 7$3,957 USD

45 data points across 14 retailers

16 retailers$1,006 USD to $2,187 USD

B+
Cheapest Retailer
-
$1,006 USD
B
Retailer 2
-
$1,095 USD
View
B
Retailer 3
-
$1,126 USD
View
Final sale: no returns
B
Retailer 4
-
$1,150 USD
View
Retailer 5
-
$1,167 USD
View
Price last confirmed 16 days ago
B
Retailer 6
-
$1,167 USD
View
B
Retailer 7
-
$1,340 USD
View
B
Retailer 8
-
$1,682 USD
£1,324 GBP
View
B
Retailer 9
-
$1,864 USD
View
B
Retailer 10
-
$2,145 USD
ZAR 34,656 ZAR
View
B
Retailer 11
-
$2,187 USD
View
Retailer 12
-
$2,439 USD
View
Price under review
Retailer 13
-
$3,041 USD
A$4,678 AUD
View
Price under review
Most Expensive
Flawless Fine Jewelry
70973F999 · Nov 2
$3,216 USD
£2,532 GBP
View
Price under review
13 more retailers have this diamond
Prices start from $1,006 USDSave up to $1,181 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.

B+
1.20ct Marquise
$1,006 USD