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Marquise|Lab Grown|IGI

1.51ct D IF Marquise Lab Grown Diamond

VG • D/IF • IGI LG754595342

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754595342

Diamond specifications and retailer prices

From $642 USD
As of November 4, 2026
Save $2,833 USD (82%) vs most expensive(unlock to see where)
34 retailers carry this diamond
Most expensive: $3,475 USD at Novita Diamonds · As of October 31, 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 very-good cut grade and certified by IGI LG754595342 or 754595342. Listed at 34 retailers as of October 31, 2026, with prices from $642 to $3,475, a $2,833 spread on the same certified stone. Novita Diamonds lists it at $3,475. 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

1.51
Carat
D
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754595342
Dimensions11.74 × 6.02 × 3.76 mm
L/W Ratio1.95
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
11.74 mm6.02 mm1.51 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754595342
Side View
Table 58.0%Crown 34.9°Girdle: MediumPavilion 39.8°Culet: NoneDepth 62.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $3,475 USD|Low: $642 USD|High: $3,920 USD|Avg: $1,938 USD
Novita Diamonds
Retailer 2
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Retailer 26
November 6, 2026
Retailer 7$642 USD
Retailer 6$802 USD
Retailer 25$830 USD
Retailer 13$837 USD
Retailer 26$908 USD
Retailer 17$1,066 USD
Retailer 8$1,122 USD
Retailer 23$1,126 USD
Retailer 21$1,177 USD
Retailer 2$1,210 USD
Retailer 18$1,357 USD
Retailer 16$1,518 USD
Retailer 22$1,879 USD
Retailer 15$1,886 USD
Retailer 10$1,902 USD
Retailer 9$2,093 USD
Retailer 20$2,316 USD
Retailer 5$2,539 USD
Retailer 4$2,569 USD
Retailer 11$2,603 USD
Retailer 19$2,605 USD
Retailer 12$2,640 USD
Retailer 3$2,720 USD
Retailer 14$2,786 USD
Retailer 24$3,128 USD
Novita Diamonds$3,475 USD

24 data points across 26 retailers

34 retailers$642 USD to $3,475 USD

A
Cheapest Retailer
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$642 USD
Retailer 2
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$722 USD
View
Price last confirmed 29 days ago
Retailer 3
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$722 USD
View
Price last confirmed 37 days ago
Retailer 4
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$786 USD
View
Price last confirmed 38 days ago
A
Retailer 5
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$802 USD
View
Final sale: no returns
Retailer 6
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$826 USD
View
Price last confirmed 38 days ago
A
Retailer 7
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$830 USD
View
A
Retailer 8
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$837 USD
View
Retailer 9
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$838 USD
View
Price last confirmed 34 days ago
Retailer 10
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$838 USD
View
Price last confirmed 27 days ago
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Retailer 11
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$908 USD
View
A
Retailer 12
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$1,066 USD
View
A
Retailer 13
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$1,122 USD
View
A
Retailer 14
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$1,126 USD
View
A
Retailer 15
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$1,177 USD
View
A
Retailer 16
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$1,210 USD
View
A
Retailer 17
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$1,357 USD
View
A
Retailer 18
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$1,518 USD
View
B+
Retailer 19
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$1,879 USD
View
B+
Retailer 20
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$1,886 USD
View
B+
Retailer 21
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$1,902 USD
View
B+
Retailer 22
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$2,093 USD
View
B+
Retailer 23
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$2,316 USD
View
Retailer 24
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$2,356 USD
View
Price last confirmed 27 days ago
Retailer 25
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$2,356 USD
View
Price last confirmed 37 days ago
B
Retailer 26
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$2,539 USD
View
B
Retailer 27
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$2,569 USD
View
B
Retailer 28
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$2,603 USD
View
Retailer 29
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$2,605 USD
View
Price last confirmed 9 days ago
B
Retailer 30
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$2,640 USD
View
B
Retailer 31
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$2,720 USD
View
B
Retailer 32
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$2,786 USD
View
B
Retailer 33
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$3,128 USD
View
Most Expensive
B
Novita Diamonds
cert_754595342 · Oct 31
$3,475 USD
A$5,346 AUD
View
33 more retailers have this diamond
Prices start from $642 USDSave up to $2,833 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
$642 USD