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Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG749521296

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG749521296

Diamond specifications and retailer prices

From $2,166 AUD
CA$2,108 CAD
As of November 2, 2026
Save $959 AUD (31%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,051 AUD at Rare Carat · As of July 27, 2026
View at Rare Carat

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 LG749521296 or 749521296. Listed at 3 retailers as of November 1, 2026, with a 44% 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
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG749521296
Dimensions14.83 × 8.03 × 5.14 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizePointed
Top View
14.83 mm8.03 mm3.51 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG749521296
Side View
Table 58.0%Crown 35.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 64.0%

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: Nov 2
Current: $4,051 AUD|Low: $749 AUD|High: $5,145 AUD|Avg: $2,099 AUD|-5.8%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
August 30, 2026
Retailer 7$836 AUD
Retailer 3$953 AUD
Retailer 11$1,014 AUD
Retailer 5$1,093 AUD
Retailer 4$1,174 AUD
Retailer 2$1,313 AUD
Retailer 10$2,166 AUD
Retailer 6$2,590 AUD
Retailer 8$3,125 AUD
Rare Carat$4,051 AUD
Retailer 9$4,677 AUD

62 data points across 11 retailers

3 retailers$2,166 AUD to $3,125 AUD

B+
Cheapest Retailer
-
$2,166 AUD
CA$2,108 CAD
B+
Retailer 2
-
$3,125 AUD
$2,190 USD
View
Most Expensive
Rare Carat
749521296 · Jul 27
$4,051 AUD
$2,839 USD
View
Price last confirmed 98 days ago
2 more retailers have this diamond
Prices start from $2,166 AUDSave up to $959 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.

B+
3.51ct Marquise
$2,166 AUD