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Round|Lab Grown|GCAL

4.20ct D IF Round Lab Grown Diamond

EX • D/IF • GCAL 361266140

Shape and cutting style on the report: Round brilliant

Certificate GCAL 361266140

Diamond specifications and retailer prices

From $5,938 AUD
$4,171 USD
As of October 31, 2026
Save $40,984 AUD (87%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $46,922 AUD at Kay Jewelers · As of November 1, 2026
View at Kay Jewelers

About this 4.2ct lab-grown round diamond

This 4.2ct 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 GCAL 361266140. Listed at 17 retailers as of October 31, 2026, with prices from $5,938 to $46,922, a $40,984 spread on the same certified stone. Kay Jewelers lists it at $46,922. 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

4.20
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabGCAL
CertificateGCAL 361266140
Dimensions10.36 × 10.32 × 6.40 mm
L/W Ratio1.00
Culet sizeNone
Top View
10.36 mm10.32 mm4.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGCAL 361266140
Side View
Table 56.0%Crown 34.5°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 61.9%

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 31
Current: $46,922 AUD|Low: $5,938 AUD|High: $46,922 AUD|Avg: $15,397 AUD|+78.5%
Kay Jewelers
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
November 1, 2026
Retailer 16$5,938 AUD
Retailer 13$6,466 AUD
Retailer 14$6,776 AUD
Retailer 7$7,240 AUD
Retailer 6$7,501 AUD
Retailer 15$7,501 AUD
Retailer 11$9,579 AUD
Retailer 8$9,829 AUD
Retailer 2$10,029 AUD
Retailer 4$10,787 AUD
Retailer 9$16,937 AUD
Retailer 12$19,014 AUD
Retailer 5$29,727 AUD
Retailer 3$44,488 AUD
Kay Jewelers$46,922 AUD
Retailer 10$46,922 AUD

43 data points across 16 retailers

17 retailers$5,938 AUD to $46,922 AUD

A
Cheapest Retailer
-
$5,938 AUD
$4,171 USD
A
Retailer 2
-
$6,466 AUD
$4,542 USD
View
A
Retailer 3
-
$6,776 AUD
$4,760 USD
View
A
Retailer 4
-
$7,240 AUD
$5,086 USD
View
Final sale: no returns
A
Retailer 5
-
$7,501 AUD
$5,269 USD
View
Retailer 6
-
$7,501 AUD
$5,269 USD
View
Price last confirmed 15 days ago
B+
Retailer 7
-
$9,579 AUD
$6,729 USD
View
B+
Retailer 8
-
$9,829 AUD
$6,904 USD
View
B+
Retailer 9
-
$10,029 AUD
£5,547 GBP
View
B+
Retailer 10
-
$13,980 AUD
$9,820 USD
View
B+
Retailer 11
-
$16,937 AUD
£9,368 GBP
View
B+
Retailer 12
-
$19,014 AUD
$13,356 USD
View
B
Retailer 13
-
$23,787 AUD
$16,709 USD
View
B
Retailer 14
-
$29,727 AUD
$20,882 USD
View
B
Retailer 15
-
$44,488 AUD
$31,250 USD
View
B
Retailer 16
-
$46,922 AUD
$32,960 USD
View
Most Expensive
B
Kay Jewelers
259115251 · Nov 1
$46,922 AUD
$32,960 USD
View
16 more retailers have this diamond
Prices start from $5,938 AUDSave up to $40,984 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
4.20ct Round
$5,938 AUD