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Marquise|Lab Grown|IGI

3.03ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG754508874

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754508874

Diamond specifications and retailer prices

From $5,318 USD
As of November 3, 2026
Save $12,878 USD (71%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $25,899 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.03ct lab-grown marquise diamond

This 3.03ct 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 LG754508874 or 754508874. Listed at 13 retailers as of November 1, 2026, with a 242% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.03
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508874
Dimensions15.80 × 7.37 × 4.57 mm
L/W Ratio2.14
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
15.80 mm7.37 mm3.03 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508874
Side View
Table 59.0%Crown 33.3°Girdle: MED-STKPavilion 40°Culet: NoneDepth 62.0%

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 3
Current: $16,384 USD|Low: $5,318 USD|High: $27,889 USD|Avg: $12,848 USD|-41.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 4, 2026
Retailer 4$5,318 USD
Retailer 11$5,755 USD
Retailer 5$5,832 USD
Retailer 2$6,152 USD
Retailer 10$11,670 USD
Retailer 12$11,715 USD
Retailer 6$11,998 USD
Retailer 9$12,523 USD
Retailer 3$12,816 USD
Retailer 7$15,008 USD
Retailer 1$16,384 USD
Retailer 8$18,196 USD

34 data points across 12 retailers

13 retailers$5,318 USD to $18,196 USD

A
Cheapest Retailer
-
$5,318 USD
A
Retailer 2
-
$5,755 USD
View
A
Retailer 3
-
$5,832 USD
View
B+
Retailer 4
-
$6,152 USD
View
B
Retailer 5
-
$9,638 USD
View
B
Retailer 6
-
$11,670 USD
View
B
Retailer 7
-
$11,715 USD
View
B
Retailer 8
-
$11,998 USD
View
B
Retailer 9
-
$12,523 USD
View
B
Retailer 10
-
$15,008 USD
View
Retailer 11
-
$16,384 USD
View
Price under review
B
Retailer 12
-
$18,196 USD
View
Most Expensive
Taylor and Hart
RJ31EZ5 · Oct 31
$25,899 USD
View
Price under review
12 more retailers have this diamond
Prices start from $5,318 USDSave up to $12,878 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
3.03ct Marquise
$5,318 USD