Cushion|Lab Grown|IGI

3.51ct G VS1 Cushion Lab Grown Diamond

EX • G/VS1 • IGI LG681504480

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG681504480

Diamond specifications and retailer prices

From $518 USD

As of October 31, 2026

Save $2,882 USD (85%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: $3,400 USD at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG681504480 or 681504480. Listed at 14 retailers as of October 31, 2026, with prices from $518 to $3,400, a $2,882 spread on the same certified stone. Brilliant Earth lists it at $3,400. 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

Color

VS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle32.2°

Pavilion angle35.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG681504480

Dimensions9.03 × 8.51 × 5.42 mm

L/W Ratio1.06

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG681504480

Side View

Caratlytics Score

How it works →

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: $3,400 USD|Low: $518 USD|High: $3,680 USD|Avg: $1,436 USD|-7.6%

Brilliant Earth

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

November 1, 2026

Retailer 6$518 USD

Retailer 9$889 USD

Retailer 11$897 USD

Retailer 5$910 USD

Retailer 2$942 USD

Retailer 7$960 USD

Retailer 8$1,208 USD

Retailer 14$1,211 USD

Retailer 3$1,259 USD

Retailer 13$1,676 USD

Retailer 12$1,874 USD

Retailer 4$2,134 USD

Retailer 10$2,146 USD

Brilliant Earth$3,400 USD

45 data points across 14 retailers

14 retailers$518 USD to $3,400 USD

Cheapest Retailer

$518 USD

Final sale: no returns

Retailer 2

$889 USD

View

B+

Retailer 3

$897 USD

View

Retailer 4

$910 USD

View

Retailer 5

$942 USD

£742 GBP

View

Retailer 6

$960 USD

€914 EUR

View

Retailer 7

$1,208 USD

View

Retailer 8

$1,211 USD

A$1,863 AUD

View

Retailer 9

$1,259 USD

ZAR 20,341 ZAR

View

B+

Retailer 10

$1,676 USD

£1,320 GBP

View

B+

Retailer 11

$1,874 USD

View

B+

Retailer 12

$2,134 USD

£1,680 GBP

View

B+

Retailer 13

$2,146 USD

View

Most Expensive

Brilliant Earth

13986947A · Oct 31

$3,400 USD

View

13 more retailers have this diamond

Prices start from $518 USDSave up to $2,882 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.

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