Princess|Lab Grown|IGI

1.28ct E IF Princess Lab Grown Diamond

ID • E/IF • IGI LG739529587

Shape and cutting style on the report: Princess cut

Certificate IGI LG739529587

Diamond specifications and retailer prices

From $364 USD
As of October 27, 2026
Save $2,866 USD (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,230 USD at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown princess diamond

This 1.28ct lab-grown princess sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG739529587 or 739529587. Listed at 22 retailers as of October 27, 2026, with prices from $364 to $3,230, a $2,866 spread on the same certified stone. Do Amore Diamonds lists it at $3,230. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.7°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739529587
Dimensions5.95 × 5.91 × 4.17 mm
L/W Ratio1.01
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
5.95 mm5.91 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739529587
Side View
Table 69.0%Crown 44.7°Girdle: MediumPavilion 37.6°Culet: NoneDepth 70.6%

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 27
Current: $3,230 USD|Low: $359 USD|High: $3,320 USD|Avg: $1,056 USD|-2.7%
Do Amore Diamonds
Retailer 2
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Retailer 22
October 29, 2026
Retailer 9$364 USD
Retailer 10$407 USD
Retailer 22$422 USD
Retailer 5$452 USD
Retailer 21$452 USD
Retailer 17$530 USD
Retailer 20$600 USD
Retailer 15$614 USD
Retailer 6$696 USD
Retailer 7$704 USD
Retailer 11$722 USD
Retailer 13$816 USD
Retailer 18$856 USD
Retailer 2$1,215 USD
Retailer 3$1,324 USD
Retailer 19$1,475 USD
Retailer 4$1,602 USD
Retailer 12$1,710 USD
Retailer 8$1,755 USD
Retailer 14$1,791 USD
Retailer 16$1,958 USD
Do Amore Diamonds$3,230 USD

30 data points across 22 retailers

22 retailers$364 USD to $3,230 USD

A
Cheapest Retailer
-
$364 USD
A
Retailer 2
-
$407 USD
View
Final sale: no returns
A
Retailer 3
-
$422 USD
View
A
Retailer 4
-
$452 USD
View
A
Retailer 5
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$452 USD
View
A
Retailer 6
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$530 USD
£417 GBP
View
A
Retailer 7
-
$600 USD
View
A
Retailer 8
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$614 USD
HK$4,800 HKD
View
A
Retailer 9
-
$696 USD
View
A
Retailer 10
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$704 USD
View
A
Retailer 11
-
$722 USD
View
A
Retailer 12
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$816 USD
£643 GBP
View
A
Retailer 13
-
$856 USD
ZAR 13,836 ZAR
View
B+
Retailer 14
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$1,215 USD
A$1,869 AUD
View
B+
Retailer 15
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$1,324 USD
View
B+
Retailer 16
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$1,475 USD
View
B+
Retailer 17
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$1,602 USD
View
B+
Retailer 18
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$1,710 USD
View
B+
Retailer 19
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$1,755 USD
View
B+
Retailer 20
-
$1,791 USD
SGD 2,420 SGD
View
B+
Retailer 21
-
$1,958 USD
£1,542 GBP
View
Most Expensive
B
Do Amore Diamonds
27-B405995DF · Oct 28
$3,230 USD
View
21 more retailers have this diamond
Prices start from $364 USDSave up to $2,866 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
1.28ct Princess
$364 USD