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Marquise|Lab Grown|IGI

5.21ct E VS1 Marquise Lab Grown Diamond

VG • E/VS1 • IGI LG818688971

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818688971

Diamond specifications and retailer prices

From $1,384 AUD
$972 USD
As of October 30, 2026
Save $7,386 AUD (84%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $8,769 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 5.21ct lab-grown marquise diamond

This 5.21ct lab-grown marquise sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG818688971 or 818688971. Listed at 24 retailers as of October 30, 2026, with prices from $1,384 to $8,769, a $7,386 spread on the same certified stone. Brilliant Earth lists it at $8,769. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

5.21
Carat
E
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818688971
Dimensions19.95 × 8.70 × 5.05 mm
L/W Ratio2.29
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
19.95 mm8.70 mm5.21 ctE / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818688971
Side View
Table 63.0%Crown 34.8°Girdle: MED-THKPavilion 38.3°Culet: NoneDepth 58.0%

Caratlytics Score

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A
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 30
Current: $8,769 AUD|Low: $1,384 AUD|High: $16,884 AUD|Avg: $3,847 AUD|-48.1%
Brilliant Earth
Retailer 2
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Retailer 24
October 31, 2026
Retailer 5$1,384 AUD
Retailer 4$1,505 AUD
Retailer 16$1,549 AUD
Retailer 7$1,604 AUD
Retailer 10$1,604 AUD
Retailer 18$1,743 AUD
Retailer 23$1,851 AUD
Retailer 3$1,859 AUD
Retailer 11$2,108 AUD
Retailer 21$2,295 AUD
Retailer 13$2,475 AUD
Retailer 19$2,562 AUD
Retailer 12$3,008 AUD
Retailer 24$3,165 AUD
Retailer 2$3,252 AUD
Retailer 20$3,260 AUD
Retailer 9$3,569 AUD
Retailer 14$4,426 AUD
Retailer 6$4,963 AUD
Retailer 8$4,975 AUD
Retailer 22$5,449 AUD
Retailer 15$5,588 AUD
Retailer 17$8,015 AUD
Brilliant Earth$8,769 AUD

29 data points across 24 retailers

24 retailers$1,384 AUD to $8,769 AUD

A
Cheapest Retailer
-
$1,384 AUD
$972 USD
A
Retailer 2
-
$1,505 AUD
$1,057 USD
View
A
Retailer 3
-
$1,549 AUD
$1,088 USD
View
Final sale: no returns
Retailer 4
-
$1,604 AUD
$1,127 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
$1,604 AUD
$1,127 USD
View
A
Retailer 6
-
$1,743 AUD
£964 GBP
View
A
Retailer 7
-
$1,851 AUD
$1,300 USD
View
A
Retailer 8
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$1,859 AUD
HK$10,200 HKD
View
A
Retailer 9
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$2,108 AUD
$1,481 USD
View
A
Retailer 10
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$2,295 AUD
$1,612 USD
View
A
Retailer 11
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$2,475 AUD
£1,369 GBP
View
A
Retailer 12
-
$2,562 AUD
€1,714 EUR
View
B+
Retailer 13
-
$3,008 AUD
$2,113 USD
View
B+
Retailer 14
-
$3,165 AUD
$2,223 USD
View
B+
Retailer 15
-
$3,252 AUD
View
B+
Retailer 16
-
$3,260 AUD
ZAR 36,994 ZAR
View
B+
Retailer 17
-
$3,569 AUD
$2,507 USD
View
B+
Retailer 18
-
$4,426 AUD
£2,448 GBP
View
B
Retailer 19
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$4,963 AUD
$3,486 USD
View
B
Retailer 20
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$4,975 AUD
$3,495 USD
View
B
Retailer 21
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$5,449 AUD
£3,014 GBP
View
B
Retailer 22
-
$5,588 AUD
$3,926 USD
View
Retailer 23
-
$8,015 AUD
$5,630 USD
View
Price last confirmed 23 days ago
Most Expensive
B
Brilliant Earth
20974196A · Oct 30
$8,769 AUD
$6,160 USD
View
23 more retailers have this diamond
Prices start from $1,384 AUDSave up to $7,386 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
5.21ct Marquise
$1,384 AUD