CaratHunter
Plans
Marquise|Lab Grown|IGI

3.09ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG837653972

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG837653972

Diamond specifications and retailer prices

From $687 NZD
$387 USD
As of October 31, 2026
Save $729 NZD (51%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,877 NZD at Rare Carat · As of October 14, 2026
View at Rare Carat

About this 3.09ct lab-grown marquise diamond

This 3.09ct 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 LG837653972 or 837653972. Listed at 3 retailers as of October 31, 2026, with a 106% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.09
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837653972
Dimensions14.69 × 7.83 × 4.78 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.69 mm7.83 mm3.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837653972
Side View
Table 62.0%Crown 36.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.0%

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: Oct 31
Current: $1,415 NZD|Low: $687 NZD|High: $1,488 NZD|Avg: $1,248 NZD|-3.5%
Retailer 1
Retailer 2
November 1, 2026
Retailer 2$687 NZD
Retailer 1$1,415 NZD

35 data points across 2 retailers

3 retailers$687 NZD to $1,415 NZD

A
Cheapest Retailer
-
$687 NZD
$387 USD
Final sale: no returns
A
Retailer 2
-
$1,415 NZD
£628 GBP
View
Most Expensive
Rare Carat
837653972 · Oct 14
$3,877 NZD
$2,185 USD
View
Price last confirmed 17 days ago
2 more retailers have this diamond
Prices start from $687 NZDSave up to $729 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
3.09ct Marquise
$687 NZD