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Marquise|Lab Grown|IGI

3.18ct F VVS1 Marquise Lab Grown Diamond

EX • F/VVS1 • IGI LG844681268

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844681268

Diamond specifications and retailer prices

From $917 AUD
$643 USD
As of November 2, 2026
Save $9,199 AUD (91%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,117 AUD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 3.18ct lab-grown marquise diamond

This 3.18ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG844681268 or 844681268. Listed at 11 retailers as of November 1, 2026, with prices from $917 to $10,117, a $9,199 spread on the same certified stone. Brilliant Earth lists it at $10,117. 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
F
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844681268
Dimensions14.67 × 7.77 × 4.81 mm
L/W Ratio1.89
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.67 mm7.77 mm3.18 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844681268
Side View
Table 60.0%Crown 34.1°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.9%

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 2
Current: $3,698 AUD|Low: $917 AUD|High: $9,072 AUD|Avg: $3,170 AUD|+5.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 22, 2026
Retailer 2$917 AUD
Retailer 8$997 AUD
Retailer 12$1,063 AUD
Retailer 5$1,303 AUD
Retailer 7$1,738 AUD
Retailer 10$2,556 AUD
Retailer 3$2,745 AUD
Retailer 11$2,991 AUD
Retailer 1$3,698 AUD
Retailer 4$4,796 AUD
Retailer 9$5,130 AUD
Retailer 6$9,072 AUD

6 data points across 12 retailers

11 retailers$917 AUD to $10,117 AUD

A
Cheapest Retailer
-
$917 AUD
$643 USD
A
Retailer 2
-
$997 AUD
$699 USD
View
A
Retailer 3
-
$1,063 AUD
$745 USD
View
A
Retailer 4
-
$1,303 AUD
$913 USD
View
A
Retailer 5
-
$1,738 AUD
$1,218 USD
View
Retailer 6
-
$2,556 AUD
$1,791 USD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$2,991 AUD
$2,096 USD
View
B
Retailer 8
-
$3,698 AUD
CA$3,599 CAD
View
B
Retailer 9
-
$5,130 AUD
$3,595 USD
View
B
Retailer 10
-
$9,072 AUD
$6,358 USD
View
Most Expensive
B
Brilliant Earth
22433571A · Nov 1
$10,117 AUD
$7,090 USD
View
10 more retailers have this diamond
Prices start from $917 AUDSave up to $9,199 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
$917 AUD