CaratHunter
Plans
Marquise|Lab Grown|IGI

3.10ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG844601584

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844601584

Diamond specifications and retailer prices

From $681 NZD
$384 USD
As of October 31, 2026
Save $5,138 NZD (88%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $5,820 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG844601584 or 844601584. Listed at 4 retailers as of October 31, 2026, with prices from $681 to $5,820, a $5,138 spread on the same certified stone. Brilliant Earth lists it at $5,820. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844601584
Dimensions15.00 × 7.51 × 4.80 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.00 mm7.51 mm3.10 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844601584
Side View
Table 62.0%Crown 37.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.9%

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: Oct 31
Current: $5,820 NZD|Low: $681 NZD|High: $8,304 NZD|Avg: $3,759 NZD|-29.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 4$681 NZD
Retailer 2$1,406 NZD
Retailer 3$4,933 NZD
Brilliant Earth$5,820 NZD

20 data points across 4 retailers

4 retailers$681 NZD to $5,820 NZD

A
Cheapest Retailer
-
$681 NZD
$384 USD
Final sale: no returns
A
Retailer 2
-
$1,406 NZD
£624 GBP
View
B
Retailer 3
-
$4,933 NZD
$2,780 USD
View
Most Expensive
B
Brilliant Earth
21816124A · Oct 31
$5,820 NZD
$3,280 USD
View
3 more retailers have this diamond
Prices start from $681 NZDSave up to $5,138 NZD

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
3.10ct Marquise
$681 NZD