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Marquise|Lab Grown|IGI

3.89ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG811661440

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG811661440

Diamond specifications and retailer prices

From $802 AUD
$562 USD
As of November 1, 2026
Save $4,382 AUD (85%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $5,365 AUD at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 3.89ct lab-grown marquise diamond

This 3.89ct 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 LG811661440 or 811661440. Listed at 6 retailers as of November 1, 2026, with a 546% 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

3.89
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811661440
Dimensions16.52 × 7.99 × 5.14 mm
L/W Ratio2.07
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.52 mm7.99 mm3.89 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811661440
Side View
Table 61.0%Crown 36.1°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 64.3%

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: $5,184 AUD|Low: $802 AUD|High: $5,184 AUD|Avg: $2,309 AUD|+0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 27, 2026
Retailer 3$802 AUD
Retailer 2$1,114 AUD
Retailer 6$1,360 AUD
Retailer 5$2,911 AUD
Retailer 4$3,931 AUD
Retailer 1$5,184 AUD

16 data points across 6 retailers

6 retailers$802 AUD to $5,184 AUD

A
Cheapest Retailer
-
$802 AUD
$562 USD
Final sale: no returns
B+
Retailer 2
-
$1,114 AUD
$781 USD
View
B+
Retailer 3
-
$2,911 AUD
$2,040 USD
View
B+
Retailer 4
-
$3,931 AUD
$2,755 USD
View
B
Retailer 5
-
$5,184 AUD
$3,633 USD
View
Most Expensive
Brilliant Earth
21267168A · Sep 28
$5,365 AUD
$3,760 USD
View
Price last confirmed 35 days ago
5 more retailers have this diamond
Prices start from $802 AUDSave up to $4,382 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
3.89ct Marquise
$802 AUD