Round|Lab Grown|GIA

4.50ct D IF Round Lab Grown Diamond

EX • D/IF • GIA 6462603452

Certificate GIA 6462603452

Diamond specifications and retailer prices

From $20,769 NZD
£9,217 GBP
As of October 29, 2026
Save $36,062 NZD (63%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $75,096 NZD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 GIA 6462603452. Listed at 20 retailers as of October 29, 2026, with a 174% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.6°
OriginLab Grown
Grading LabGIA
CertificateGIA 6462603452
Dimensions10.63 × 10.68 × 6.54 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
10.63 mm10.68 mm4.50 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6462603452
Side View
Table 55.0%Crown 35°GirdlePavilion 40.6°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $26,700 NZD|Low: $15,770 NZD|High: $75,104 NZD|Avg: $35,217 NZD
Retailer 1
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
Retailer 18
Retailer 19
Retailer 20
Taylor and Hart
October 31, 2026
Retailer 18$20,769 NZD
Retailer 4$22,692 NZD
Retailer 2$23,016 NZD
Retailer 11$23,536 NZD
Retailer 14$23,568 NZD
Retailer 12$25,023 NZD
Retailer 5$25,777 NZD
Retailer 20$25,883 NZD
Retailer 1$26,700 NZD
Retailer 3$27,090 NZD
Retailer 7$27,899 NZD
Retailer 10$28,014 NZD
Retailer 15$30,942 NZD
Retailer 13$35,737 NZD
Retailer 8$38,262 NZD
Retailer 17$39,287 NZD
Retailer 19$48,247 NZD
Retailer 16$56,832 NZD
Retailer 9$61,043 NZD
Retailer 6$68,974 NZD
Taylor and Hart$75,096 NZD

25 data points across 21 retailers

20 retailers$20,769 NZD to $56,832 NZD

B+
Cheapest Retailer
-
$20,769 NZD
£9,217 GBP
B+
Retailer 2
-
$22,692 NZD
$12,789 USD
View
B+
Retailer 3
-
$23,016 NZD
$12,972 USD
View
B
Retailer 4
-
$23,568 NZD
$13,283 USD
View
B+
Retailer 5
-
$25,023 NZD
$14,103 USD
View
B+
Retailer 6
-
$25,777 NZD
$14,528 USD
View
Final sale: no returns
B
Retailer 7
-
$25,883 NZD
$14,588 USD
View
B+
Retailer 8
-
$26,700 NZD
$15,048 USD
View
B+
Retailer 9
-
$27,090 NZD
$15,268 USD
View
B+
Retailer 10
-
$27,899 NZD
$15,724 USD
View
Retailer 11
-
$28,014 NZD
$15,789 USD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$30,942 NZD
£13,732 GBP
View
Retailer 13
-
$35,737 NZD
A$30,987 AUD
View
Price last confirmed 23 days ago
B
Retailer 14
-
$38,262 NZD
£16,980 GBP
View
B
Retailer 15
-
$39,287 NZD
£17,435 GBP
View
B
Retailer 16
-
$48,247 NZD
$27,192 USD
View
B
Retailer 17
-
$56,832 NZD
ZAR 517,454 ZAR
View
Retailer 18
-
$61,043 NZD
A$52,929 AUD
View
Price last confirmed 9 days ago
Retailer 19
-
$68,974 NZD
$38,874 USD
View
Price under review
Most Expensive
Taylor and Hart
TNKOKZ2 · Oct 31
$75,096 NZD
$42,325 USD
View
Price under review
19 more retailers have this diamond
Prices start from $20,769 NZDSave up to $36,062 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.

B+
4.50ct Round
$20,769 NZD