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Marquise|Lab Grown|IGI

4.00ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG754508871

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754508871

Diamond specifications and retailer prices

From $22,740 USD
As of October 31, 2026
3 retailers carry this diamond
Most expensive: $31,296 USD at Novita Diamonds · As of July 4, 2026
View at Novita Diamonds

About this 4ct lab-grown marquise diamond

This 4ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754508871 or 754508871. Listed at 3 retailers as of October 31, 2026. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.00
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508871
Dimensions16.40 × 8.12 mm
L/W Ratio2.02
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
16.40 mm8.12 mm4.00 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508871
Side View
Table 59.0%Crown 36.6°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 63.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $31,296 USD|Low: $9,105 USD|High: $46,218 USD|Avg: $23,214 USD|-26.2%
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
September 9, 2026
Retailer 6$9,382 USD
Retailer 10$12,371 USD
Retailer 3$16,260 USD
Retailer 9$16,606 USD
Retailer 13$16,768 USD
Retailer 5$19,912 USD
Retailer 2$21,269 USD
Retailer 4$22,740 USD
Retailer 7$24,674 USD
Retailer 8$30,981 USD
Novita Diamonds$31,296 USD
Retailer 11$44,244 USD
Retailer 12$46,218 USD

69 data points across 13 retailers

3 retailers

Retailer 1
-
$9,382 USD
Price last confirmed 53 days ago
B
Retailer 2
-
$22,740 USD
View
Most Expensive
Novita Diamonds
cert_754508871 · Jul 4
$31,296 USD
A$48,147 AUD
View
Price last confirmed 121 days ago
2 more retailers have this diamond
Prices start from $22,740 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
4.00ct Marquise
$22,740 USD