CaratHunter
Plans
Cushion|Lab Grown|IGI

3.51ct F VVS1 Cushion Lab Grown Diamond

EX • F/VVS1 • IGI LG813654337

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG813654337

Diamond specifications and retailer prices

From $889 USD
As of November 1, 2026
Save $4,712 USD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,601 USD at Queensmith · As of October 27, 2026
View at Queensmith

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion 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 LG813654337 or 813654337. Listed at 21 retailers as of October 27, 2026, with prices from $889 to $5,601, a $4,712 spread on the same certified stone. Queensmith lists it at $5,601. 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
F
Color
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813654337
Dimensions8.90 × 8.68 × 5.56 mm
L/W Ratio1.03
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.90 mm8.68 mm3.51 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813654337
Side View
Table 62.0%Crown 32.9°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 64.1%

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: Nov 1
Current: $2,140 USD|Low: $889 USD|High: $5,240 USD|Avg: $2,316 USD|-3.7%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 3, 2026
Retailer 8$889 USD
Retailer 13$1,068 USD
Retailer 3$1,110 USD
Retailer 6$1,310 USD
Retailer 9$1,318 USD
Retailer 17$1,397 USD
Retailer 14$1,401 USD
Retailer 12$2,015 USD
Retailer 19$2,079 USD
Retailer 1$2,140 USD
Retailer 7$2,264 USD
Retailer 4$2,681 USD
Retailer 5$2,865 USD
Retailer 10$3,088 USD
Retailer 11$3,184 USD
Retailer 15$3,452 USD
Retailer 18$3,790 USD
Retailer 2$3,985 USD
Retailer 16$5,240 USD

27 data points across 19 retailers

21 retailers$889 USD to $5,601 USD

A
Cheapest Retailer
-
$889 USD
Final sale: no returns
Retailer 2
-
$957 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$1,068 USD
£841 GBP
View
A
Retailer 4
-
$1,110 USD
View
A
Retailer 5
-
$1,310 USD
View
A
Retailer 6
-
$1,318 USD
View
A
Retailer 7
-
$1,397 USD
€1,330 EUR
View
A
Retailer 8
-
$1,401 USD
£1,103 GBP
View
B+
Retailer 9
-
$2,015 USD
View
B+
Retailer 10
-
$2,079 USD
A$3,199 AUD
View
B+
Retailer 11
-
$2,140 USD
ZAR 34,571 ZAR
View
B+
Retailer 12
-
$2,264 USD
View
B+
Retailer 13
-
$2,681 USD
View
B
Retailer 14
-
$2,865 USD
£2,256 GBP
View
B
Retailer 15
-
$3,088 USD
View
B
Retailer 16
-
$3,184 USD
View
B
Retailer 17
-
$3,452 USD
£2,718 GBP
View
B
Retailer 18
-
$3,790 USD
A$5,830 AUD
View
B
Retailer 19
-
$3,985 USD
View
B
Retailer 20
-
$5,240 USD
View
Most Expensive
B
Queensmith
LG813654337 · Oct 27
$5,601 USD
£4,410 GBP
View
20 more retailers have this diamond
Prices start from $889 USDSave up to $4,712 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
$889 USD