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Marquise|Lab Grown|IGI

1.31ct F VS1 Marquise Lab Grown Diamond

VG • F/VS1 • IGI LG623423017

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG623423017

Diamond specifications and retailer prices

From $281 USD
As of November 2, 2026
Save $1,124 USD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,405 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.31ct lab-grown marquise diamond

This 1.31ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG623423017 or 623423017. Listed at 19 retailers as of October 29, 2026, with prices from $281 to $1,405, a $1,124 spread on the same certified stone. MOH London lists it at $1,405. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.31
Carat
F
Color
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623423017
Dimensions10.61 × 5.73 × 3.69 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.61 mm5.73 mm1.31 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623423017
Side View
Table 60.0%Crown 38°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 64.4%

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: Nov 2
Current: $1,405 USD|Low: $270 USD|High: $1,414 USD|Avg: $730 USD|-0.5%
MOH London
Retailer 2
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Retailer 21
November 2, 2026
Retailer 21$281 USD
Retailer 5$326 USD
Retailer 3$349 USD
Retailer 6$349 USD
Retailer 18$419 USD
Retailer 9$461 USD
Retailer 13$505 USD
Retailer 10$531 USD
Retailer 20$575 USD
Retailer 7$601 USD
Retailer 2$601 USD
Retailer 11$625 USD
Retailer 15$629 USD
Retailer 16$787 USD
Retailer 17$795 USD
Retailer 19$1,071 USD
Retailer 4$1,121 USD
Retailer 14$1,137 USD
Retailer 8$1,265 USD
Retailer 12$1,326 USD
MOH London$1,405 USD

31 data points across 21 retailers

19 retailers$281 USD to $1,405 USD

A
Cheapest Retailer
-
$281 USD
A
Retailer 2
-
$326 USD
View
Retailer 3
-
$349 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$349 USD
View
Retailer 5
-
$419 USD
£330 GBP
View
Price last confirmed 16 days ago
Retailer 6
-
$461 USD
HK$3,600 HKD
View
Price last confirmed 27 days ago
A
Retailer 7
-
$505 USD
View
B+
Retailer 8
-
$531 USD
View
B+
Retailer 9
-
$575 USD
View
B+
Retailer 10
-
$601 USD
View
B+
Retailer 11
-
$601 USD
ZAR 9,711 ZAR
View
B+
Retailer 12
-
$629 USD
A$968 AUD
View
B
Retailer 13
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$787 USD
A$1,210 AUD
View
B
Retailer 14
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$795 USD
View
B
Retailer 15
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$1,071 USD
View
B
Retailer 16
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$1,121 USD
View
B
Retailer 17
-
$1,137 USD
View
Retailer 18
-
$1,326 USD
SGD 1,792 SGD
View
Price last confirmed 26 days ago
Most Expensive
B
MOH London
LG623423017 · Oct 29
$1,405 USD
£1,106 GBP
View
18 more retailers have this diamond
Prices start from $281 USDSave up to $1,124 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
1.31ct Marquise
$281 USD