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Cushion|Lab Grown|IGI

4.51ct I VVS2 Cushion Lab Grown Diamond

ID • I/VVS2 • IGI LG500144718

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG500144718

Diamond specifications and retailer prices

From $3,750 USD
As of October 30, 2026
Save $12,242 USD (77%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $35,259 USD at Cape Diamonds · As of October 29, 2026
View at Cape Diamonds

About this 4.51ct lab-grown cushion diamond

This 4.51ct lab-grown cushion sits in the three to five carat band, graded I colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG500144718 or 500144718. Listed at 8 retailers as of October 29, 2026, with a 326% 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

4.51
Carat
I
Color
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle31.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500144718
Dimensions9.35 × 9.02 × 5.88 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.35 mm9.02 mm4.51 ctI / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500144718
Side View
Table 64.0%Crown 40.6°Girdle: STK-VTKPavilion 31.4°Culet: NoneDepth 65.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $35,259 USD|Low: $3,750 USD|High: $39,512 USD|Avg: $18,951 USD|-10.8%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2$3,750 USD
Retailer 8$15,226 USD
Retailer 6$15,992 USD
Retailer 9$16,054 USD
Retailer 5$16,395 USD
Retailer 4$16,564 USD
Retailer 10$17,784 USD
Retailer 7$23,729 USD
Retailer 3$26,158 USD
Cape Diamonds$35,259 USD

19 data points across 10 retailers

8 retailers$3,750 USD to $15,992 USD

B+
Cheapest Retailer
-
$3,750 USD
B
Retailer 2
-
$15,226 USD
View
B
Retailer 3
-
$15,992 USD
View
Final sale: no returns
Retailer 4
-
$16,395 USD
View
Price under review
Retailer 5
-
$16,564 USD
View
Price under review
Most Expensive
Cape Diamonds
cert_500144718 · Oct 29
$35,259 USD
ZAR 569,608 ZAR
View
Price under review
5 more retailers have this diamond
Prices start from $3,750 USDSave up to $12,242 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.

B+
4.51ct Cushion
$3,750 USD