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Princess|Lab Grown|IGI

4.20ct D FL Princess Lab Grown Diamond

ID • D/FL • IGI LG780662054

Shape and cutting style on the report: Princess cut

Certificate IGI LG780662054

Diamond specifications and retailer prices

From $7,522 AUD
$5,284 USD
As of October 30, 2026
Save $44,240 AUD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $51,762 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.2ct lab-grown princess diamond

This 4.2ct lab-grown princess sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780662054 or 780662054. Listed at 15 retailers as of October 30, 2026, with prices from $7,522 to $51,762, a $44,240 spread on the same certified stone. Do Amore Diamonds lists it at $51,762. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662054
Dimensions9.00 × 8.80 × 6.16 mm
L/W Ratio1.02
Culet sizePointed
Cert comments
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
9.00 mm8.80 mm4.20 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662054
Side View
Table 66.0%Crown 42.1°Girdle: MED-STKPavilion 37.3°Culet: NoneDepth 70.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $51,762 AUD|Low: $7,522 AUD|High: $62,724 AUD|Avg: $16,992 AUD|-17.5%
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
November 1, 2026
Retailer 13$7,522 AUD
Retailer 11$7,880 AUD
Retailer 9$7,884 AUD
Retailer 14$8,023 AUD
Retailer 15$8,748 AUD
Retailer 10$10,747 AUD
Retailer 5$11,434 AUD
Retailer 7$11,861 AUD
Retailer 6$13,318 AUD
Retailer 8$13,483 AUD
Retailer 3$16,833 AUD
Retailer 12$19,147 AUD
Retailer 2$19,600 AUD
Retailer 4$24,157 AUD
Do Amore Diamonds$51,762 AUD

36 data points across 15 retailers

15 retailers$7,522 AUD to $51,762 AUD

A
Cheapest Retailer
-
$7,522 AUD
$5,284 USD
A
Retailer 2
-
$7,880 AUD
$5,535 USD
View
A
Retailer 3
-
$7,884 AUD
$5,538 USD
View
A
Retailer 4
-
$8,023 AUD
$5,636 USD
View
A
Retailer 5
-
$8,748 AUD
$6,145 USD
View
A
Retailer 6
-
$10,747 AUD
$7,549 USD
View
A
Retailer 7
-
$11,434 AUD
$8,032 USD
View
A
Retailer 8
-
$11,861 AUD
$8,332 USD
View
Final sale: no returns
A
Retailer 9
-
$13,318 AUD
$9,355 USD
View
A
Retailer 10
-
$13,483 AUD
$9,471 USD
View
B+
Retailer 11
-
$16,833 AUD
€11,261 EUR
View
B+
Retailer 12
-
$19,147 AUD
$13,450 USD
View
B+
Retailer 13
-
$19,600 AUD
£10,841 GBP
View
B+
Retailer 14
-
$24,157 AUD
$16,969 USD
View
Most Expensive
B
Do Amore Diamonds
27-1A18A5279 · Oct 31
$51,762 AUD
$36,360 USD
View
14 more retailers have this diamond
Prices start from $7,522 AUDSave up to $44,240 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 Princess
$7,522 AUD