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Marquise|Lab Grown|IGI

3.80ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG812633618

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812633618

Diamond specifications and retailer prices

From $695 AUD
$488 USD
As of November 1, 2026
Save $4,373 AUD (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $5,068 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.8ct lab-grown marquise diamond

This 3.8ct 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 LG812633618 or 812633618. Listed at 4 retailers as of October 31, 2026, with prices from $695 to $5,068, a $4,373 spread on the same certified stone. Brilliant Earth lists it at $5,068. 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

3.80
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812633618
Dimensions17.12 × 8.19 × 4.91 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.12 mm8.19 mm3.80 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812633618
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $5,068 AUD|Low: $686 AUD|High: $5,225 AUD|Avg: $2,172 AUD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5$690 AUD
Retailer 3$695 AUD
Retailer 7$1,068 AUD
Retailer 2$1,303 AUD
Retailer 8$1,437 AUD
Retailer 9$1,758 AUD
Retailer 6$1,888 AUD
Retailer 10$2,790 AUD
Retailer 4$3,901 AUD
Brilliant Earth$5,068 AUD

37 data points across 10 retailers

4 retailers$695 AUD to $5,068 AUD

A
Cheapest Retailer
-
$695 AUD
$488 USD
Final sale: no returns
A
Retailer 2
-
$1,303 AUD
£721 GBP
View
Retailer 3
-
$3,901 AUD
$2,740 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
20331184A · Oct 31
$5,068 AUD
$3,560 USD
View
3 more retailers have this diamond
Prices start from $695 AUDSave up to $4,373 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
3.80ct Marquise
$695 AUD