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Marquise|Lab Grown|IGI

3.18ct E VVS1 Marquise Lab Grown Diamond

EX • E/VVS1 • IGI LG818696663

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818696663

Diamond specifications and retailer prices

From $843 USD
As of October 29, 2026
Save $2,605 USD (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,605 USD at Rare Carat · As of October 12, 2026
View at Rare Carat

About this 3.18ct lab-grown marquise diamond

This 3.18ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG818696663 or 818696663. Listed at 17 retailers as of October 29, 2026, with a 309% 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

3.18
Carat
E
Color
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818696663
Dimensions14.66 × 7.52 × 4.72 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.66 mm7.52 mm3.18 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818696663
Side View
Table 60.0%Crown 38.4°Girdle: STK-THKPavilion 39.5°Culet: NoneDepth 62.8%

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: Oct 29
Current: $1,252 USD|Low: $843 USD|High: $3,448 USD|Avg: $1,994 USD|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 13$843 USD
Retailer 15$1,050 USD
Retailer 8$1,250 USD
Retailer 1$1,252 USD
Retailer 9$1,337 USD
Retailer 14$1,603 USD
Retailer 11$1,987 USD
Retailer 7$2,008 USD
Retailer 3$2,027 USD
Retailer 6$2,103 USD
Retailer 5$2,854 USD
Retailer 4$2,937 USD
Retailer 12$3,013 USD
Retailer 10$3,120 USD
Retailer 2$3,448 USD

19 data points across 15 retailers

17 retailers$843 USD to $3,448 USD

A
Cheapest Retailer
-
$843 USD
Final sale: no returns
A
Retailer 2
-
$1,050 USD
View
A
Retailer 3
-
$1,250 USD
View
A
Retailer 4
-
$1,252 USD
View
A
Retailer 5
-
$1,337 USD
£1,053 GBP
View
A
Retailer 6
-
$1,603 USD
€1,527 EUR
View
B+
Retailer 7
-
$1,987 USD
View
Retailer 8
-
$2,008 USD
A$3,089 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$2,027 USD
ZAR 32,754 ZAR
View
B+
Retailer 10
-
$2,103 USD
View
B+
Retailer 11
-
$2,854 USD
View
B+
Retailer 12
-
$2,937 USD
SGD 3,969 SGD
View
B+
Retailer 13
-
$3,013 USD
View
B+
Retailer 14
-
$3,120 USD
View
B
Retailer 15
-
$3,448 USD
£2,715 GBP
View
Retailer 16
-
$3,711 USD
A$5,709 AUD
View
Price last confirmed 22 days ago
Most Expensive
Rare Carat
CN169-74A · Oct 7
$5,605 USD
View
Price last confirmed 18 days ago
16 more retailers have this diamond
Prices start from $843 USDSave up to $2,605 USD

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
3.18ct Marquise
$843 USD