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Cushion|Lab Grown|IGI

3.18ct E VS2 Cushion Lab Grown Diamond

ID • E/VS2 • IGI LG831615121

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831615121

Diamond specifications and retailer prices

From $1,185 AUD
€793 EUR
As of October 31, 2026
Save $2,164 AUD (65%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,350 AUD at With Clarity · As of October 31, 2026
View at With Clarity

About this 3.18ct lab-grown cushion diamond

This 3.18ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831615121 or 831615121. Listed at 8 retailers as of October 31, 2026, with prices from $1,185 to $3,350, a $2,164 spread on the same certified stone. With Clarity lists it at $3,350. 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
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831615121
Dimensions10.57 × 7.48 × 5.09 mm
L/W Ratio1.41
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.57 mm7.48 mm3.18 ctE / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831615121
Side View
Table 62.0%Crown 34.4°Girdle: MED-STKPavilion 36.1°Culet: NoneDepth 68.0%

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 31
Current: $1,185 AUD|Low: $900 AUD|High: $3,283 AUD|Avg: $2,147 AUD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
With Clarity
October 31, 2026
Retailer 4$900 AUD
Retailer 1$1,185 AUD
Retailer 7$1,293 AUD
Retailer 2$2,264 AUD
Retailer 5$2,598 AUD
Retailer 3$2,764 AUD
Retailer 6$3,014 AUD
With Clarity$3,283 AUD

27 data points across 8 retailers

8 retailers$1,185 AUD to $3,350 AUD

Retailer 1
-
$900 AUD
£498 GBP
Price last confirmed 14 days ago
A
Retailer 2
-
$1,185 AUD
€793 EUR
View
A
Retailer 3
-
$1,293 AUD
$908 USD
View
B+
Retailer 4
-
$2,264 AUD
$1,590 USD
View
B+
Retailer 5
-
$2,598 AUD
$1,825 USD
View
B+
Retailer 6
-
$2,764 AUD
£1,529 GBP
View
Retailer 7
-
$3,014 AUD
SGD 2,861 SGD
View
Price last confirmed 18 days ago
Most Expensive
B+
With Clarity
831615121 · Oct 31
$3,350 AUD
$2,353 USD
View
7 more retailers have this diamond
Prices start from $1,185 AUDSave up to $2,164 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 Cushion
$1,185 AUD