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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 $5,284 USD
As of October 30, 2026
Save $31,076 USD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $36,360 USD 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 $5,284 to $36,360, a $31,076 spread on the same certified stone. Do Amore Diamonds lists it at $36,360. 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
Color
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: $36,360 USD|Low: $5,284 USD|High: $44,120 USD|Avg: $12,680 USD|-17.6%
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 11$5,284 USD
Retailer 9$5,535 USD
Retailer 2$5,538 USD
Retailer 12$5,636 USD
Retailer 13$6,145 USD
Retailer 8$7,549 USD
Retailer 4$8,032 USD
Retailer 7$8,332 USD
Retailer 5$9,355 USD
Retailer 6$9,497 USD
Retailer 14$11,824 USD
Retailer 10$13,450 USD
Retailer 15$13,842 USD
Retailer 3$16,969 USD
Do Amore Diamonds$36,360 USD

35 data points across 15 retailers

15 retailers$5,284 USD to $36,360 USD

A
Cheapest Retailer
-
$5,284 USD
A
Retailer 2
-
$5,535 USD
View
A
Retailer 3
-
$5,538 USD
View
A
Retailer 4
-
$5,636 USD
View
A
Retailer 5
-
$6,145 USD
View
A
Retailer 6
-
$7,549 USD
View
A
Retailer 7
-
$8,032 USD
View
A
Retailer 8
-
$8,332 USD
View
Final sale: no returns
A
Retailer 9
-
$9,355 USD
View
A
Retailer 10
-
$9,497 USD
View
B+
Retailer 11
-
$11,824 USD
€11,261 EUR
View
B+
Retailer 12
-
$13,450 USD
View
B+
Retailer 13
-
$13,842 USD
£10,899 GBP
View
B+
Retailer 14
-
$16,969 USD
View
Most Expensive
B
Do Amore Diamonds
27-1A18A5279 · Oct 31
$36,360 USD
View
14 more retailers have this diamond
Prices start from $5,284 USDSave up to $31,076 USD

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
$5,284 USD