Princess|Lab Grown|IGI

4.28ct D FL Princess Lab Grown Diamond

EX • D/FL • IGI LG813651576

Shape and cutting style on the report: Princess cut

Certificate IGI LG813651576

Diamond specifications and retailer prices

From $7,487 USD
As of October 30, 2026
Save $21,464 USD (74%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $28,951 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.28ct lab-grown princess diamond

This 4.28ct 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 LG813651576 or 813651576. Listed at 19 retailers as of October 30, 2026, with prices from $7,487 to $28,951, a $21,464 spread on the same certified stone. Taylor and Hart lists it at $28,951. 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

4.28
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813651576
Dimensions8.95 × 8.70 × 6.29 mm
L/W Ratio1.03
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
8.95 mm8.70 mm4.28 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813651576
Side View
Table 69.0%Crown 38.5°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 72.3%

Caratlytics Score

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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: $10,610 USD|Low: $7,487 USD|High: $34,136 USD|Avg: $13,906 USD|-19.2%
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
Taylor and Hart
October 31, 2026
Retailer 8$7,487 USD
Retailer 5$7,776 USD
Retailer 13$7,787 USD
Retailer 15$7,982 USD
Retailer 6$8,385 USD
Retailer 12$8,630 USD
Retailer 3$8,685 USD
Retailer 9$9,767 USD
Retailer 14$9,819 USD
Retailer 16$10,058 USD
Retailer 17$10,530 USD
Retailer 1$10,610 USD
Retailer 7$12,436 USD
Retailer 10$13,772 USD
Retailer 4$15,881 USD
Retailer 11$17,144 USD
Retailer 2$24,180 USD
Taylor and Hart$28,951 USD

38 data points across 18 retailers

19 retailers$7,487 USD to $28,951 USD

A
Cheapest Retailer
-
$7,487 USD
A
Retailer 2
-
$7,776 USD
View
A
Retailer 3
-
$7,787 USD
View
A
Retailer 4
-
$7,982 USD
View
A
Retailer 5
-
$8,385 USD
View
Final sale: no returns
A
Retailer 6
-
$8,630 USD
View
A
Retailer 7
-
$8,685 USD
View
Retailer 8
-
$8,685 USD
View
Price last confirmed 15 days ago
A
Retailer 9
-
$9,767 USD
View
A
Retailer 10
-
$9,819 USD
View
A
Retailer 11
-
$10,058 USD
View
A
Retailer 12
-
$10,530 USD
View
A
Retailer 13
-
$10,610 USD
£8,355 GBP
View
B+
Retailer 14
-
$12,436 USD
£9,792 GBP
View
B+
Retailer 15
-
$13,772 USD
€13,116 EUR
View
B+
Retailer 16
-
$15,881 USD
View
B+
Retailer 17
-
$17,144 USD
£13,499 GBP
View
B
Retailer 18
-
$24,180 USD
View
Most Expensive
B
Taylor and Hart
UNPJEEV · Oct 31
$28,951 USD
View
18 more retailers have this diamond
Prices start from $7,487 USDSave up to $21,464 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
4.28ct Princess
$7,487 USD