CaratHunter
Plans
Marquise|Lab Grown|IGI

1.51ct D IF Marquise Lab Grown Diamond

VG • D/IF • IGI LG754594512

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754594512

Diamond specifications and retailer prices

From $642 USD
As of November 6, 2026
Save $2,833 USD (82%) vs most expensive(unlock to see where)
28 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 LG754594512 or 754594512. Listed at 28 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 angle33.1°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594512
Dimensions12.43 × 5.91 × 3.59 mm
L/W Ratio2.10
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
12.43 mm5.91 mm1.51 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594512
Side View
Table 59.0%Crown 33.1°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 60.7%

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: $3,475 USD|Low: $642 USD|High: $3,920 USD|Avg: $1,859 USD
Novita Diamonds
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
Retailer 27
Retailer 28
November 6, 2026
Retailer 23$642 USD
Retailer 25$698 USD
Retailer 4$744 USD
Retailer 13$802 USD
Retailer 5$830 USD
Retailer 24$837 USD
Retailer 6$908 USD
Retailer 19$1,066 USD
Retailer 10$1,122 USD
Retailer 3$1,126 USD
Retailer 27$1,177 USD
Retailer 2$1,210 USD
Retailer 20$1,357 USD
Retailer 17$1,518 USD
Retailer 28$1,879 USD
Retailer 16$1,886 USD
Retailer 11$1,902 USD
Retailer 22$2,093 USD
Retailer 26$2,316 USD
Retailer 9$2,539 USD
Retailer 8$2,569 USD
Retailer 12$2,603 USD
Retailer 21$2,605 USD
Retailer 14$2,640 USD
Retailer 7$2,720 USD
Retailer 15$2,786 USD
Retailer 18$3,246 USD
Novita Diamonds$3,475 USD

21 data points across 28 retailers

28 retailers$642 USD to $3,475 USD

A
Cheapest Retailer
-
$642 USD
A
Retailer 2
-
$698 USD
View
A
Retailer 3
-
$744 USD
View
A
Retailer 4
-
$802 USD
View
Final sale: no returns
A
Retailer 5
-
$830 USD
View
A
Retailer 6
-
$837 USD
View
A
Retailer 7
-
$908 USD
View
A
Retailer 8
-
$1,066 USD
View
A
Retailer 9
-
$1,122 USD
View
A
Retailer 10
-
$1,126 USD
View
A
Retailer 11
-
$1,177 USD
View
A
Retailer 12
-
$1,210 USD
View
A
Retailer 13
-
$1,357 USD
View
A
Retailer 14
-
$1,518 USD
View
B+
Retailer 15
-
$1,879 USD
View
B+
Retailer 16
-
$1,886 USD
View
B+
Retailer 17
-
$1,902 USD
View
B+
Retailer 18
-
$2,093 USD
View
B+
Retailer 19
-
$2,316 USD
View
B
Retailer 20
-
$2,539 USD
View
B
Retailer 21
-
$2,569 USD
View
B
Retailer 22
-
$2,603 USD
View
Retailer 23
-
$2,605 USD
View
Price last confirmed 9 days ago
B
Retailer 24
-
$2,640 USD
View
B
Retailer 25
-
$2,720 USD
View
B
Retailer 26
-
$2,786 USD
View
B
Retailer 27
-
$3,246 USD
View
Most Expensive
B
Novita Diamonds
cert_754594512 · Oct 31
$3,475 USD
A$5,346 AUD
View
27 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