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 $928 USD
€884 EUR
As of October 29, 2026
Save $1,632 USD (64%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,974 USD 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
Color
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

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: $2,974 USD|Low: $617 USD|High: $2,974 USD|Avg: $1,778 USD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 9$617 USD
Retailer 2$928 USD
Retailer 5$951 USD
Retailer 4$1,008 USD
Retailer 6$1,496 USD
Retailer 7$1,988 USD
Retailer 8$2,315 USD
Retailer 3$2,560 USD
Retailer 10$2,581 USD
Rare Carat$2,974 USD

40 data points across 10 retailers

11 retailers$928 USD to $2,560 USD

A
Retailer 1
-
$617 USD
Price last confirmed 13 days ago
A
Retailer 2
-
$928 USD
€884 EUR
View
B+
Retailer 3
-
$951 USD
View
A
Retailer 4
-
$1,008 USD
£794 GBP
View
A
Retailer 5
-
$1,496 USD
View
B+
Retailer 6
-
$1,988 USD
View
B+
Retailer 7
-
$2,282 USD
View
B+
Retailer 8
-
$2,315 USD
View
B+
Retailer 9
-
$2,560 USD
£2,016 GBP
View
B+
Retailer 10
-
$2,581 USD
A$3,971 AUD
View
Price last confirmed 24 days ago
Most Expensive
B
Rare Carat
30R821699152 · Sep 9
$2,974 USD
View
Price last confirmed 50 days ago
10 more retailers have this diamond
Prices start from $928 USDSave up to $1,632 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
3.51ct Cushion
$928 USD