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Marquise|Lab Grown|IGI

5.51ct E VS1 Marquise Lab Grown Diamond

ID • E/VS1 • IGI LG841640042

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG841640042

Diamond specifications and retailer prices

From $1,932 AUD
HK$10,600 HKD
As of October 31, 2026
Save $6,119 AUD (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,050 AUD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 5.51ct lab-grown marquise diamond

This 5.51ct lab-grown marquise sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG841640042 or 841640042. Listed at 11 retailers as of October 28, 2026, with prices from $1,932 to $8,050, a $6,119 spread on the same certified stone. Rare Carat lists it at $8,050. 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

5.51
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841640042
Dimensions18.31 × 9.05 × 5.58 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.31 mm9.05 mm5.51 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841640042
Side View
Table 65.0%Crown 33.7°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 61.7%

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: Oct 31
Current: $8,050 AUD|Low: $1,932 AUD|High: $8,050 AUD|Avg: $3,794 AUD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 7$1,932 AUD
Retailer 11$2,178 AUD
Retailer 4$2,522 AUD
Retailer 3$2,612 AUD
Retailer 6$2,650 AUD
Retailer 8$3,717 AUD
Retailer 5$5,572 AUD
Retailer 10$5,696 AUD
Retailer 9$6,015 AUD
Retailer 2$6,138 AUD
Rare Carat$8,050 AUD

20 data points across 11 retailers

11 retailers$1,932 AUD to $8,050 AUD

A
Cheapest Retailer
-
$1,932 AUD
HK$10,600 HKD
A
Retailer 2
-
$2,178 AUD
$1,530 USD
View
A
Retailer 3
-
$2,522 AUD
£1,395 GBP
View
A
Retailer 4
-
$2,612 AUD
$1,835 USD
View
A
Retailer 5
-
$2,650 AUD
€1,773 EUR
View
B+
Retailer 6
-
$3,717 AUD
$2,611 USD
View
B+
Retailer 7
-
$5,572 AUD
£3,082 GBP
View
B
Retailer 8
-
$5,696 AUD
$4,001 USD
View
B
Retailer 9
-
$6,015 AUD
$4,225 USD
View
B
Retailer 10
-
$6,138 AUD
View
Most Expensive
B
Rare Carat
KI0426400KF841 · Oct 28
$8,050 AUD
$5,655 USD
View
10 more retailers have this diamond
Prices start from $1,932 AUDSave up to $6,119 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.

A
5.51ct Marquise
$1,932 AUD