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Round|Lab Grown|IGI

4.53ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG821640744

Shape and cutting style on the report: Round brilliant

Certificate IGI LG821640744

Diamond specifications and retailer prices

From $5,017 AUD
$3,524 USD
As of October 30, 2026
Save $15,298 AUD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $20,315 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.53ct lab-grown round diamond

This 4.53ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821640744 or 821640744. Listed at 11 retailers as of October 30, 2026, with prices from $5,017 to $20,315, a $15,298 spread on the same certified stone. Brilliant Earth lists it at $20,315. 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

4.53
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821640744
Dimensions10.58 × 10.64 × 6.50 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.58 mm10.64 mm4.53 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821640744
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.3%

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: $20,315 AUD|Low: $5,017 AUD|High: $39,533 AUD|Avg: $14,001 AUD|-48.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10$5,017 AUD
Retailer 7$6,281 AUD
Retailer 11$6,852 AUD
Retailer 2$7,277 AUD
Retailer 9$8,292 AUD
Retailer 6$8,828 AUD
Retailer 5$13,976 AUD
Retailer 12$14,471 AUD
Retailer 8$17,782 AUD
Retailer 4$19,224 AUD
Brilliant Earth$20,315 AUD
Retailer 3$20,944 AUD

38 data points across 12 retailers

11 retailers$5,017 AUD to $20,315 AUD

A
Cheapest Retailer
-
$5,017 AUD
$3,524 USD
A
Retailer 2
-
$6,281 AUD
$4,412 USD
View
A
Retailer 3
-
$6,852 AUD
HK$37,600 HKD
View
A
Retailer 4
-
$7,277 AUD
£4,025 GBP
View
A
Retailer 5
-
$8,292 AUD
$5,825 USD
View
A
Retailer 6
-
$8,828 AUD
€5,906 EUR
View
B+
Retailer 7
-
$13,976 AUD
£7,730 GBP
View
B+
Retailer 8
-
$14,471 AUD
$10,165 USD
View
Retailer 9
-
$17,782 AUD
View
Price last confirmed 22 days ago
B
Retailer 10
-
$19,224 AUD
$13,504 USD
View
Most Expensive
B
Brilliant Earth
21475909Y · Oct 30
$20,315 AUD
$14,270 USD
View
10 more retailers have this diamond
Prices start from $5,017 AUDSave up to $15,298 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
4.53ct Round
$5,017 AUD