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Marquise|Lab Grown|IGI

3.40ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG809650188

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG809650188

Diamond specifications and retailer prices

From $591 SGD
$462 USD
As of November 1, 2026
Save $3,468 SGD (85%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,206 SGD at Brilliant Earth · As of October 1, 2026
View at Brilliant Earth

About this 3.4ct lab-grown marquise diamond

This 3.4ct 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 LG809650188 or 809650188. Listed at 6 retailers as of October 31, 2026, with a 587% 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

3.40
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809650188
Dimensions16.18 × 7.69 × 4.71 mm
L/W Ratio2.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.18 mm7.69 mm3.40 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG809650188
Side View
Table 62.0%Crown 35.9°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,206 SGD|Low: $591 SGD|High: $4,206 SGD|Avg: $1,971 SGD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 6$591 SGD
Retailer 8$836 SGD
Retailer 12$978 SGD
Retailer 10$1,077 SGD
Retailer 11$1,227 SGD
Retailer 5$1,547 SGD
Retailer 13$1,598 SGD
Retailer 3$1,934 SGD
Retailer 4$2,085 SGD
Retailer 2$2,164 SGD
Retailer 9$3,292 SGD
Retailer 7$4,059 SGD
Brilliant Earth$4,206 SGD

18 data points across 13 retailers

6 retailers$591 SGD to $4,059 SGD

A
Cheapest Retailer
-
$591 SGD
$462 USD
Final sale: no returns
B+
Retailer 2
-
$836 SGD
$654 USD
View
B+
Retailer 3
-
$2,164 SGD
$1,693 USD
View
B
Retailer 4
-
$3,292 SGD
$2,575 USD
View
B
Retailer 5
-
$4,059 SGD
$3,175 USD
View
Most Expensive
Brilliant Earth
20335210A · Oct 1
$4,206 SGD
$3,290 USD
View
Price last confirmed 31 days ago
5 more retailers have this diamond
Prices start from $591 SGDSave up to $3,468 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
3.40ct Marquise
$591 SGD