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Cushion|Lab Grown|IGI

3.51ct D VS2 Cushion Lab Grown Diamond

ID • D/VS2 • IGI LG821699152

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG821699152

Diamond specifications and retailer prices

From $1,321 AUD
€884 EUR
As of October 29, 2026
Save $2,323 AUD (64%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,234 AUD at Rare Carat · As of September 9, 2026
View at Rare Carat

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG821699152 or 821699152. Listed at 11 retailers as of October 29, 2026, with a 176% 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

3.51
Carat
D
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle26.6°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821699152
Dimensions11.44 × 7.82 × 5.03 mm
L/W Ratio1.46
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.44 mm7.82 mm3.51 ctD / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821699152
Side View
Table 68.0%Crown 26.6°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 64.3%

Caratlytics Score

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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: $4,234 AUD|Low: $878 AUD|High: $4,234 AUD|Avg: $2,530 AUD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 9$878 AUD
Retailer 3$1,321 AUD
Retailer 5$1,354 AUD
Retailer 2$1,444 AUD
Retailer 6$2,129 AUD
Retailer 7$2,830 AUD
Retailer 8$3,295 AUD
Retailer 4$3,644 AUD
Retailer 10$3,674 AUD
Rare Carat$4,234 AUD

41 data points across 10 retailers

11 retailers$1,321 AUD to $3,644 AUD

Retailer 1
-
$878 AUD
$617 USD
Price last confirmed 13 days ago
A
Retailer 2
-
$1,321 AUD
€884 EUR
View
B+
Retailer 3
-
$1,354 AUD
$951 USD
View
A
Retailer 4
-
$1,444 AUD
£799 GBP
View
A
Retailer 5
-
$2,129 AUD
$1,496 USD
View
B+
Retailer 6
-
$2,830 AUD
$1,988 USD
View
B+
Retailer 7
-
$3,248 AUD
$2,282 USD
View
B+
Retailer 8
-
$3,295 AUD
$2,315 USD
View
B+
Retailer 9
-
$3,644 AUD
£2,016 GBP
View
Retailer 10
-
$3,674 AUD
View
Price last confirmed 25 days ago
Most Expensive
Rare Carat
30R821699152 · Sep 9
$4,234 AUD
$2,974 USD
View
Price last confirmed 50 days ago
10 more retailers have this diamond
Prices start from $1,321 AUDSave up to $2,323 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
3.51ct Cushion
$1,321 AUD