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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 $6,253 NZD
$3,524 USD
As of October 30, 2026
Save $19,067 NZD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $25,319 NZD 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 $6,253 to $25,319, a $19,067 spread on the same certified stone. Brilliant Earth lists it at $25,319. 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: $25,319 NZD|Low: $6,253 NZD|High: $49,272 NZD|Avg: $17,398 NZD|-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 31, 2026
Retailer 10$6,253 NZD
Retailer 7$7,828 NZD
Retailer 11$8,539 NZD
Retailer 5$9,070 NZD
Retailer 9$10,335 NZD
Retailer 2$10,969 NZD
Retailer 6$17,418 NZD
Retailer 12$18,036 NZD
Retailer 8$22,163 NZD
Retailer 4$23,960 NZD
Brilliant Earth$25,319 NZD
Retailer 3$26,104 NZD

39 data points across 12 retailers

11 retailers$6,253 NZD to $25,319 NZD

A
Cheapest Retailer
-
$6,253 NZD
$3,524 USD
A
Retailer 2
-
$7,828 NZD
$4,412 USD
View
A
Retailer 3
-
$8,539 NZD
HK$37,600 HKD
View
A
Retailer 4
-
$9,070 NZD
£4,025 GBP
View
A
Retailer 5
-
$10,335 NZD
$5,825 USD
View
A
Retailer 6
-
$10,969 NZD
€5,888 EUR
View
B+
Retailer 7
-
$17,418 NZD
£7,730 GBP
View
B+
Retailer 8
-
$18,036 NZD
$10,165 USD
View
Retailer 9
-
$22,163 NZD
A$19,217 AUD
View
Price last confirmed 22 days ago
B
Retailer 10
-
$23,960 NZD
$13,504 USD
View
Most Expensive
B
Brilliant Earth
21475909Y · Oct 30
$25,319 NZD
$14,270 USD
View
10 more retailers have this diamond
Prices start from $6,253 NZDSave up to $19,067 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
4.53ct Round
$6,253 NZD