CaratHunter
Plans
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 $1,200 AUD
$843 USD
As of October 29, 2026
Save $3,709 AUD (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,979 AUD 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,780 AUD|Low: $1,200 AUD|High: $4,909 AUD|Avg: $2,836 AUD|-15.7%
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 12$1,200 AUD
Retailer 14$1,495 AUD
Retailer 1$1,780 AUD
Retailer 5$1,798 AUD
Retailer 8$1,904 AUD
Retailer 13$2,283 AUD
Retailer 10$2,829 AUD
Retailer 7$2,858 AUD
Retailer 2$2,886 AUD
Retailer 6$2,994 AUD
Retailer 4$4,063 AUD
Retailer 3$4,181 AUD
Retailer 11$4,289 AUD
Retailer 9$4,442 AUD
Retailer 15$4,909 AUD

20 data points across 15 retailers

17 retailers$1,200 AUD to $4,909 AUD

A
Cheapest Retailer
-
$1,200 AUD
$843 USD
Final sale: no returns
A
Retailer 2
-
$1,495 AUD
$1,050 USD
View
A
Retailer 3
-
$1,780 AUD
$1,250 USD
View
A
Retailer 4
-
$1,798 AUD
$1,263 USD
View
A
Retailer 5
-
$1,904 AUD
£1,053 GBP
View
A
Retailer 6
-
$2,283 AUD
€1,527 EUR
View
B+
Retailer 7
-
$2,829 AUD
$1,987 USD
View
Retailer 8
-
$2,858 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$2,886 AUD
ZAR 32,754 ZAR
View
B+
Retailer 10
-
$2,994 AUD
$2,103 USD
View
B+
Retailer 11
-
$4,063 AUD
$2,854 USD
View
B+
Retailer 12
-
$4,181 AUD
SGD 3,969 SGD
View
B+
Retailer 13
-
$4,289 AUD
$3,013 USD
View
B+
Retailer 14
-
$4,442 AUD
$3,120 USD
View
B
Retailer 15
-
$4,909 AUD
£2,715 GBP
View
Retailer 16
-
$5,283 AUD
View
Price last confirmed 22 days ago
Most Expensive
Rare Carat
CN169-74A · Oct 7
$7,979 AUD
$5,605 USD
View
Price last confirmed 18 days ago
16 more retailers have this diamond
Prices start from $1,200 AUDSave up to $3,709 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
3.18ct Marquise
$1,200 AUD