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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 $6,109 NZD
$3,443 USD
As of October 29, 2026
Save $25,899 NZD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $32,008 NZD 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 $6,109 to $32,008, a $25,899 spread on the same certified stone. Brilliant Earth lists it at $32,008. 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: $32,008 NZD|Low: $6,109 NZD|High: $32,008 NZD|Avg: $10,804 NZD
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$6,109 NZD
Retailer 7$6,647 NZD
Retailer 6$6,842 NZD
Retailer 4$7,087 NZD
Retailer 12$7,088 NZD
Retailer 13$8,267 NZD
Retailer 5$8,856 NZD
Retailer 9$9,424 NZD
Retailer 16$9,775 NZD
Retailer 14$10,188 NZD
Retailer 2$11,318 NZD
Retailer 10$15,081 NZD
Retailer 3$15,199 NZD
Retailer 8$15,391 NZD
Retailer 11$23,921 NZD
Brilliant Earth$32,008 NZD

22 data points across 16 retailers

18 retailers$6,109 NZD to $32,008 NZD

A
Cheapest Retailer
-
$6,109 NZD
$3,443 USD
A
Retailer 2
-
$6,647 NZD
$3,746 USD
View
A
Retailer 3
-
$6,842 NZD
$3,856 USD
View
Final sale: no returns
A
Retailer 4
-
$7,087 NZD
$3,994 USD
View
A
Retailer 5
-
$7,088 NZD
$3,995 USD
View
Retailer 6
-
$7,282 NZD
$4,104 USD
View
Price last confirmed 18 days ago
A
Retailer 7
-
$8,267 NZD
HK$36,400 HKD
View
A
Retailer 8
-
$8,856 NZD
$4,991 USD
View
A
Retailer 9
-
$9,424 NZD
£4,182 GBP
View
A
Retailer 10
-
$9,775 NZD
$5,509 USD
View
A
Retailer 11
-
$10,188 NZD
$5,742 USD
View
A
Retailer 12
-
$11,318 NZD
€6,075 EUR
View
B+
Retailer 13
-
$15,081 NZD
ZAR 137,313 ZAR
View
B+
Retailer 14
-
$15,199 NZD
£6,745 GBP
View
Retailer 15
-
$15,391 NZD
A$13,345 AUD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
$17,743 NZD
$10,000 USD
View
B+
Retailer 17
-
$23,921 NZD
SGD 18,219 SGD
View
Most Expensive
B
Brilliant Earth
21360248A · Oct 30
$32,008 NZD
$18,040 USD
View
17 more retailers have this diamond
Prices start from $6,109 NZDSave up to $25,899 NZD

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
$6,109 NZD