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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 $624 SGD
$488 USD
As of October 31, 2026
Save $3,927 SGD (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $4,551 SGD 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 $624 to $4,551, a $3,927 spread on the same certified stone. Brilliant Earth lists it at $4,551. 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: Oct 31
Current: $4,551 SGD|Low: $616 SGD|High: $4,692 SGD|Avg: $1,953 SGD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$620 SGD
Retailer 3$624 SGD
Retailer 7$959 SGD
Retailer 2$1,180 SGD
Retailer 8$1,290 SGD
Retailer 9$1,579 SGD
Retailer 6$1,695 SGD
Retailer 10$2,506 SGD
Retailer 4$3,503 SGD
Brilliant Earth$4,551 SGD

36 data points across 10 retailers

4 retailers$624 SGD to $4,551 SGD

A
Cheapest Retailer
-
$624 SGD
$488 USD
Final sale: no returns
A
Retailer 2
-
$1,180 SGD
£727 GBP
View
Retailer 3
-
$3,503 SGD
$2,740 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
20331184A · Oct 31
$4,551 SGD
$3,560 USD
View
3 more retailers have this diamond
Prices start from $624 SGDSave up to $3,927 SGD

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
$624 SGD