CaratHunter
Plans
Round|Lab Grown|GIA

4.20ct D IF Round Lab Grown Diamond

EX • D/IF • GIA 3515707720

Certificate GIA 3515707720

Diamond specifications and retailer prices

From $6,754 AUD
$4,744 USD
As of October 29, 2026
Save $40,567 AUD (86%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $47,320 AUD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

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 GIA 3515707720. Listed at 15 retailers as of October 29, 2026, with prices from $6,754 to $47,320, a $40,567 spread on the same certified stone. Do Amore Diamonds lists it at $47,320. 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°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 3515707720
Dimensions10.38 × 10.41 × 6.35 mm
L/W Ratio1.00
Top View
10.38 mm10.41 mm4.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3515707720
Side View
Table 57.0%Crown 34°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.1%

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 29
Current: $47,320 AUD|Low: $6,754 AUD|High: $47,520 AUD|Avg: $17,102 AUD
Do Amore Diamonds
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
October 31, 2026
Retailer 12$6,754 AUD
Retailer 2$7,078 AUD
Retailer 9$7,669 AUD
Retailer 11$8,579 AUD
Retailer 4$8,784 AUD
Retailer 8$9,942 AUD
Retailer 3$10,453 AUD
Retailer 15$12,334 AUD
Retailer 7$12,855 AUD
Retailer 13$14,988 AUD
Retailer 10$16,467 AUD
Retailer 14$17,942 AUD
Retailer 6$19,994 AUD
Retailer 5$33,568 AUD
Do Amore Diamonds$47,320 AUD

34 data points across 15 retailers

15 retailers$6,754 AUD to $47,320 AUD

A
Cheapest Retailer
-
$6,754 AUD
$4,744 USD
A
Retailer 2
-
$7,078 AUD
$4,972 USD
View
A
Retailer 3
-
$7,669 AUD
$5,387 USD
View
A
Retailer 4
-
$8,579 AUD
$6,026 USD
View
Final sale: no returns
A
Retailer 5
-
$8,784 AUD
$6,170 USD
View
B+
Retailer 6
-
$9,942 AUD
$6,984 USD
View
B+
Retailer 7
-
$10,453 AUD
$7,343 USD
View
B+
Retailer 8
-
$12,334 AUD
$8,664 USD
View
B+
Retailer 9
-
$12,855 AUD
$9,030 USD
View
B+
Retailer 10
-
$14,988 AUD
€10,027 EUR
View
B+
Retailer 11
-
$16,467 AUD
$11,567 USD
View
B+
Retailer 12
-
$17,942 AUD
£9,924 GBP
View
B+
Retailer 13
-
$19,994 AUD
$14,045 USD
View
B
Retailer 14
-
$33,568 AUD
$23,580 USD
View
Most Expensive
B
Do Amore Diamonds
27-583E6BE5B · Oct 30
$47,320 AUD
$33,240 USD
View
14 more retailers have this diamond
Prices start from $6,754 AUDSave up to $40,567 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
$6,754 AUD