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Radiant|Lab Grown|IGI

5.38ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG551208000

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG551208000

Diamond specifications and retailer prices

From $912 AUD
$641 USD
As of October 30, 2026
Save $4,219 AUD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,131 AUD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 5.38ct lab-grown radiant diamond

This 5.38ct lab-grown radiant sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG551208000 or 551208000. Listed at 13 retailers as of October 28, 2026, with prices from $912 to $5,131, a $4,219 spread on the same certified stone. Rare Carat lists it at $5,131. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

5.38
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.5°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551208000
Dimensions12.55 × 8.51 × 5.69 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
12.55 mm8.51 mm5.38 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551208000
Side View
Table 65.0%Crown 44.5°Girdle: ThickPavilion 34.5°Culet: NoneDepth 66.9%

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 30
Current: $5,131 AUD|Low: $912 AUD|High: $12,725 AUD|Avg: $3,841 AUD
Rare Carat
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
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 5$912 AUD
Retailer 3$992 AUD
Retailer 10$1,058 AUD
Retailer 14$1,257 AUD
Retailer 11$1,310 AUD
Retailer 13$1,643 AUD
Retailer 2$1,690 AUD
Retailer 17$1,729 AUD
Retailer 6$2,323 AUD
Retailer 15$2,975 AUD
Retailer 16$3,245 AUD
Retailer 4$3,651 AUD
Retailer 12$4,481 AUD
Rare Carat$5,131 AUD
Retailer 8$6,341 AUD
Retailer 7$9,040 AUD
Retailer 9$12,725 AUD

4 data points across 17 retailers

13 retailers$912 AUD to $5,131 AUD

A
Cheapest Retailer
-
$912 AUD
$641 USD
A
Retailer 2
-
$992 AUD
$697 USD
View
A
Retailer 3
-
$1,058 AUD
$743 USD
View
A
Retailer 4
-
$1,257 AUD
HK$6,900 HKD
View
A
Retailer 5
-
$1,310 AUD
$920 USD
View
A
Retailer 6
-
$1,643 AUD
$1,154 USD
View
A
Retailer 7
-
$1,690 AUD
£935 GBP
View
B+
Retailer 8
-
$1,729 AUD
$1,215 USD
View
B+
Retailer 9
-
$2,975 AUD
$2,090 USD
View
B
Retailer 10
-
$3,245 AUD
$2,280 USD
View
B
Retailer 11
-
$3,651 AUD
$2,565 USD
View
B
Retailer 12
-
$4,481 AUD
£2,479 GBP
View
Most Expensive
B
Rare Carat
KI0002080KF551 · Oct 28
$5,131 AUD
$3,605 USD
View
12 more retailers have this diamond
Prices start from $912 AUDSave up to $4,219 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
5.38ct Radiant
$912 AUD