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Marquise|Lab Grown|IGI

3.20ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG647476974

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG647476974

Diamond specifications and retailer prices

From $781 USD
HK$6,100 HKD
As of October 30, 2026
Save $4,299 USD (85%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,080 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.2ct lab-grown marquise diamond

This 3.2ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG647476974 or 647476974. Listed at 5 retailers as of October 28, 2026, with prices from $781 to $5,080, a $4,299 spread on the same certified stone. Brilliant Earth lists it at $5,080. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.20
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647476974
Dimensions15.69 × 7.77 × 4.67 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.69 mm7.77 mm3.20 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647476974
Side View
Table 62.0%Crown 34.7°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,080 USD|Low: $781 USD|High: $5,080 USD|Avg: $3,019 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 27, 2026
Retailer 2$781 USD
Retailer 3$992 USD
Retailer 4$2,244 USD
Retailer 5$2,595 USD
Brilliant Earth$5,080 USD

5 data points across 5 retailers

5 retailers$781 USD to $5,080 USD

A
Cheapest Retailer
-
$781 USD
HK$6,100 HKD
A
Retailer 2
-
$992 USD
View
B
Retailer 3
-
$2,244 USD
SGD 3,033 SGD
View
B
Retailer 4
-
$2,595 USD
View
Most Expensive
B
Brilliant Earth
22156194Y · Oct 28
$5,080 USD
View
4 more retailers have this diamond
Prices start from $781 USDSave up to $4,299 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
3.20ct Marquise
$781 USD