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 $16,664 AUD
£9,217 GBP
As of October 29, 2026
Save $28,935 AUD (63%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $60,253 AUD at Taylor and Hart · As of October 30, 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: $20,077 AUD|Low: $12,611 AUD|High: $60,260 AUD|Avg: $28,222 AUD
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 17$16,664 AUD
Retailer 4$18,206 AUD
Retailer 2$18,467 AUD
Retailer 11$18,884 AUD
Retailer 12$18,910 AUD
Retailer 1$20,077 AUD
Retailer 5$20,682 AUD
Retailer 20$20,767 AUD
Retailer 18$21,422 AUD
Retailer 3$21,736 AUD
Retailer 7$22,385 AUD
Retailer 10$22,477 AUD
Retailer 14$24,827 AUD
Retailer 13$28,674 AUD
Retailer 8$30,699 AUD
Retailer 16$31,522 AUD
Retailer 19$38,711 AUD
Retailer 15$45,598 AUD
Retailer 9$48,977 AUD
Retailer 6$55,341 AUD
Taylor and Hart$60,253 AUD

25 data points across 21 retailers

20 retailers$16,664 AUD to $45,598 AUD

B+
Cheapest Retailer
-
$16,664 AUD
£9,217 GBP
B+
Retailer 2
-
$18,206 AUD
$12,789 USD
View
B+
Retailer 3
-
$18,467 AUD
$12,972 USD
View
B
Retailer 4
-
$18,910 AUD
$13,283 USD
View
B+
Retailer 5
-
$20,077 AUD
$14,103 USD
View
B+
Retailer 6
-
$20,682 AUD
$14,528 USD
View
Final sale: no returns
B
Retailer 7
-
$20,767 AUD
$14,588 USD
View
B+
Retailer 8
-
$21,422 AUD
$15,048 USD
View
B+
Retailer 9
-
$21,736 AUD
$15,268 USD
View
B+
Retailer 10
-
$22,385 AUD
$15,724 USD
View
Retailer 11
-
$22,477 AUD
$15,789 USD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$24,827 AUD
£13,732 GBP
View
Retailer 13
-
$28,674 AUD
View
Price last confirmed 22 days ago
B
Retailer 14
-
$30,699 AUD
£16,980 GBP
View
B
Retailer 15
-
$31,522 AUD
£17,435 GBP
View
B
Retailer 16
-
$38,711 AUD
$27,192 USD
View
B
Retailer 17
-
$45,598 AUD
ZAR 517,454 ZAR
View
Retailer 18
-
$48,977 AUD
View
Price last confirmed 8 days ago
Retailer 19
-
$55,341 AUD
$38,874 USD
View
Price under review
Most Expensive
Taylor and Hart
TNKOKZ2 · Oct 30
$60,253 AUD
$42,325 USD
View
Price under review
19 more retailers have this diamond
Prices start from $16,664 AUDSave up to $28,935 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.

B+
4.50ct Round
$16,664 AUD