Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG818653105

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818653105

Diamond specifications and retailer prices

From $5,051 AUD

$3,540 USD

As of November 2, 2026

12 retailers carry this diamond

Most expensive: $6,706 AUD at Do Amore Diamonds · As of October 26, 2026

View at Do Amore Diamonds

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise 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 LG818653105 or 818653105. Listed at 12 retailers as of November 2, 2026. 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

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.4°

Pavilion angle40.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG818653105

Dimensions15.32 × 7.91 × 4.99 mm

L/W Ratio1.94

Girdle conditionFaceted

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG818653105

Side View

Caratlytics Score

How it works →

Good

Decent quality, room for better deals

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2

Current: $6,706 AUD|Low: $1,127 AUD|High: $6,706 AUD|Avg: $2,905 AUD

Do Amore Diamonds

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

October 27, 2026

Retailer 7$1,127 AUD

Retailer 13$1,150 AUD

Retailer 4$1,358 AUD

Retailer 3$1,448 AUD

Retailer 8$1,546 AUD

Retailer 6$1,596 AUD

Retailer 10$2,225 AUD

Retailer 11$2,417 AUD

Retailer 12$3,472 AUD

Retailer 5$3,513 AUD

Retailer 9$3,681 AUD

Retailer 2$5,051 AUD

Do Amore Diamonds$6,706 AUD

20 data points across 13 retailers

12 retailers

Retailer 1

$1,127 AUD

$790 USD

Price last confirmed 8 days ago

Retailer 2

$1,358 AUD

$952 USD

View

Price last confirmed 7 days ago

Retailer 3

$1,448 AUD

$1,015 USD

View

Price last confirmed 10 days ago

Retailer 4

$1,546 AUD

€1,032 EUR

View

Price last confirmed 8 days ago

Retailer 5

$1,596 AUD

£881 GBP

View

Price last confirmed 7 days ago

Retailer 6

$2,225 AUD

ZAR 25,186 ZAR

View

Price last confirmed 9 days ago

Retailer 7

$2,417 AUD

$1,694 USD

View

Price last confirmed 7 days ago

Retailer 8

$3,472 AUD

$2,433 USD

View

Price last confirmed 7 days ago

Retailer 9

$3,513 AUD

$2,462 USD

View

Price last confirmed 7 days ago

Retailer 10

$3,681 AUD

$2,580 USD

View

Price last confirmed 8 days ago

Retailer 11

$5,051 AUD

$3,540 USD

View

Most Expensive

Do Amore Diamonds

27-8E1241D7A · Oct 26

$6,706 AUD

$4,700 USD

View

Price last confirmed 7 days ago

11 more retailers have this diamond

Prices start from $5,051 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.

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3.51ct Marquise

$5,051 AUD