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Marquise|Lab Grown|IGI

3.00ct F SI1 Marquise Lab Grown Diamond

VG • F/SI1 • IGI LG838620373

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG838620373

Diamond specifications and retailer prices

From $372 USD
As of November 1, 2026
Save $394 USD (51%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $766 USD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 3ct lab-grown marquise diamond

This 3ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG838620373 or 838620373. Listed at 2 retailers as of November 1, 2026, with prices from $372 to $766, a $394 spread on the same certified stone. 77 Diamonds lists it at $766. 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

3.00
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838620373
Dimensions15.14 × 7.65 × 4.64 mm
L/W Ratio1.98
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.14 mm7.65 mm3.00 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838620373
Side View
Table 60.0%Crown 34.2°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 60.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $766 USD|Low: $372 USD|High: $854 USD|Avg: $730 USD|-8.1%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2$372 USD
77 Diamonds$766 USD

33 data points across 2 retailers

2 retailers$372 USD to $766 USD

A
Cheapest Retailer
-
$372 USD
Final sale: no returns
Most Expensive
B+
77 Diamonds
MQTVSDRMUKXBR · Nov 2
$766 USD
£603 GBP
View
1 more retailer has this diamond
Prices start from $372 USDSave up to $394 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
3.00ct Marquise
$372 USD