Marquise|Lab Grown|IGI

3.10ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG737560142

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG737560142

Diamond specifications and retailer prices

From $2,472 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: $2,472 USD at Blue Nile
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Blue Nile

About this 3.1ct lab-grown marquise diamond

This 3.1ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG737560142 or 737560142. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

3.10
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737560142
Dimensions15.17 × 7.58 × 4.80 mm
L/W Ratio2.00
Girdle conditionFaceted
Culet sizePointed
Top View
15.17 mm7.58 mm3.10 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737560142
Side View
Table 61.0%Crown 35.1°Girdle: MED-STKPavilion 41.2°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: $2,472 USD|Low: $281 USD|High: $3,223 USD|Avg: $1,203 USD
Blue Nile
Retailer 2
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Retailer 11
September 26, 2026
Retailer 10$609 USD
Retailer 8$645 USD
Retailer 3$665 USD
Retailer 2$782 USD
Retailer 6$886 USD
Retailer 7$942 USD
Retailer 5$1,097 USD
Retailer 4$1,279 USD
Retailer 9$1,567 USD
Blue Nile$2,472 USD
Retailer 11$2,931 USD

66 data points across 11 retailers

1 retailer

B
Blue Nile
28730592 · Oct 31
$2,472 USD
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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
3.10ct Marquise
$2,472 USD