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Marquise|Lab Grown|IGI

1.51ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG830616655

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG830616655

Diamond specifications and retailer prices

From $619 USD
As of November 6, 2026
Save $2,343 USD (79%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,432 USD at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG830616655 or 830616655. Listed at 25 retailers as of November 5, 2026, with a 379% 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

1.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830616655
Dimensions11.38 × 6.22 × 3.75 mm
L/W Ratio1.83
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.38 mm6.22 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830616655
Side View
Table 58.0%Crown 33.2°Girdle: MED-STKPavilion 38.8°Culet: NoneDepth 60.3%

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: Nov 6
Current: $3,432 USD|Low: $552 USD|High: $3,560 USD|Avg: $1,603 USD
Novita Diamonds
Retailer 2
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Retailer 22
November 6, 2026
Retailer 19$619 USD
Retailer 12$684 USD
Retailer 17$693 USD
Retailer 22$694 USD
Retailer 11$820 USD
Retailer 13$832 USD
Retailer 20$1,030 USD
Retailer 14$1,096 USD
Retailer 16$1,161 USD
Retailer 9$1,180 USD
Retailer 6$1,187 USD
Retailer 10$1,509 USD
Retailer 7$1,597 USD
Retailer 18$2,020 USD
Retailer 15$2,219 USD
Retailer 5$2,240 USD
Retailer 4$2,424 USD
Retailer 21$2,451 USD
Retailer 3$2,531 USD
Retailer 2$2,730 USD
Retailer 8$2,962 USD
Novita Diamonds$3,432 USD

30 data points across 22 retailers

25 retailers$619 USD to $2,962 USD

A
Cheapest Retailer
-
$619 USD
Retailer 2
-
$684 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
$684 USD
View
A
Retailer 4
-
$693 USD
View
Final sale: no returns
A
Retailer 5
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$694 USD
View
A
Retailer 6
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$820 USD
View
A
Retailer 7
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$832 USD
View
A
Retailer 8
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$1,030 USD
View
A
Retailer 9
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$1,064 USD
View
A
Retailer 10
-
$1,096 USD
View
A
Retailer 11
-
$1,161 USD
View
A
Retailer 12
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$1,180 USD
View
A
Retailer 13
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$1,187 USD
View
A
Retailer 14
-
$1,509 USD
View
A
Retailer 15
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$1,597 USD
View
B+
Retailer 16
-
$2,020 USD
View
B+
Retailer 17
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$2,219 USD
View
B+
Retailer 18
-
$2,240 USD
View
B
Retailer 19
-
$2,424 USD
View
B+
Retailer 20
-
$2,451 USD
View
Retailer 21
-
$2,501 USD
View
Price last confirmed 10 days ago
B
Retailer 22
-
$2,531 USD
View
B+
Retailer 23
-
$2,730 USD
View
B+
Retailer 24
-
$2,962 USD
View
Most Expensive
Novita Diamonds
cert_830616655 · Oct 8
$3,432 USD
A$5,280 AUD
View
Price last confirmed 28 days ago
24 more retailers have this diamond
Prices start from $619 USDSave up to $2,343 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
1.51ct Marquise
$619 USD