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Marquise|Lab Grown|IGI

3.92ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG816671786

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG816671786

Diamond specifications and retailer prices

From $808 AUD
$566 USD
As of November 1, 2026
Save $4,416 AUD (85%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $5,408 AUD at Brilliant Earth · As of October 1, 2026
View at Brilliant Earth

About this 3.92ct lab-grown marquise diamond

This 3.92ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG816671786 or 816671786. Listed at 6 retailers as of November 1, 2026, with a 547% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.92
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816671786
Dimensions15.75 × 8.39 × 5.14 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
15.75 mm8.39 mm3.92 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816671786
Side View
Table 62.0%Crown 35°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.3%

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: Nov 1
Current: $5,224 AUD|Low: $808 AUD|High: $5,224 AUD|Avg: $2,177 AUD|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 28, 2026
Retailer 2$808 AUD
Retailer 4$1,124 AUD
Retailer 6$1,372 AUD
Retailer 5$2,935 AUD
Retailer 3$3,717 AUD
Retailer 1$5,224 AUD

15 data points across 6 retailers

6 retailers$808 AUD to $5,224 AUD

A
Cheapest Retailer
-
$808 AUD
$566 USD
Final sale: no returns
B+
Retailer 2
-
$1,124 AUD
$788 USD
View
B+
Retailer 3
-
$2,935 AUD
$2,057 USD
View
B+
Retailer 4
-
$3,717 AUD
$2,605 USD
View
B
Retailer 5
-
$5,224 AUD
$3,661 USD
View
Most Expensive
Brilliant Earth
21236985A · Oct 1
$5,408 AUD
$3,790 USD
View
Price last confirmed 32 days ago
5 more retailers have this diamond
Prices start from $808 AUDSave up to $4,416 AUD

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
3.92ct Marquise
$808 AUD