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Round|Lab Grown|IGI

4.50ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG833644315

Shape and cutting style on the report: Round brilliant

Certificate IGI LG833644315

Diamond specifications and retailer prices

From $4,901 AUD
$3,443 USD
As of October 29, 2026
Save $20,780 AUD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $25,682 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.5ct lab-grown round diamond

This 4.5ct 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 LG833644315 or 833644315. Listed at 18 retailers as of October 29, 2026, with prices from $4,901 to $25,682, a $20,780 spread on the same certified stone. Brilliant Earth lists it at $25,682. 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

4.50
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG833644315
Dimensions10.51 × 10.56 × 6.55 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
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
10.51 mm10.56 mm4.50 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG833644315
Side View
Table 56.0%Crown 34.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
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 29
Current: $25,682 AUD|Low: $4,901 AUD|High: $25,682 AUD|Avg: $8,669 AUD
Brilliant Earth
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
October 31, 2026
Retailer 15$4,901 AUD
Retailer 7$5,333 AUD
Retailer 6$5,489 AUD
Retailer 4$5,686 AUD
Retailer 12$5,687 AUD
Retailer 13$6,633 AUD
Retailer 5$7,105 AUD
Retailer 9$7,562 AUD
Retailer 16$7,843 AUD
Retailer 14$8,174 AUD
Retailer 2$9,081 AUD
Retailer 10$12,100 AUD
Retailer 3$12,195 AUD
Retailer 8$12,349 AUD
Retailer 11$19,193 AUD
Brilliant Earth$25,682 AUD

22 data points across 16 retailers

18 retailers$4,901 AUD to $25,682 AUD

A
Cheapest Retailer
-
$4,901 AUD
$3,443 USD
A
Retailer 2
-
$5,333 AUD
$3,746 USD
View
A
Retailer 3
-
$5,489 AUD
$3,856 USD
View
Final sale: no returns
A
Retailer 4
-
$5,686 AUD
$3,994 USD
View
A
Retailer 5
-
$5,687 AUD
$3,995 USD
View
Retailer 6
-
$5,842 AUD
$4,104 USD
View
Price last confirmed 18 days ago
A
Retailer 7
-
$6,633 AUD
HK$36,400 HKD
View
A
Retailer 8
-
$7,105 AUD
$4,991 USD
View
A
Retailer 9
-
$7,562 AUD
£4,182 GBP
View
A
Retailer 10
-
$7,843 AUD
$5,509 USD
View
A
Retailer 11
-
$8,174 AUD
$5,742 USD
View
A
Retailer 12
-
$9,081 AUD
€6,075 EUR
View
B+
Retailer 13
-
$12,100 AUD
ZAR 137,313 ZAR
View
B+
Retailer 14
-
$12,195 AUD
£6,745 GBP
View
Retailer 15
-
$12,349 AUD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
$14,236 AUD
$10,000 USD
View
B+
Retailer 17
-
$19,193 AUD
SGD 18,219 SGD
View
Most Expensive
B
Brilliant Earth
21360248A · Oct 30
$25,682 AUD
$18,040 USD
View
17 more retailers have this diamond
Prices start from $4,901 AUDSave up to $20,780 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
4.50ct Round
$4,901 AUD