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Princess|Lab Grown|IGI

1.28ct F IF Princess Lab Grown Diamond

ID • F/IF • IGI LG683544256

Shape and cutting style on the report: Princess cut

Certificate IGI LG683544256

Diamond specifications and retailer prices

From $434 USD
As of November 4, 2026
Save $1,786 USD (80%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,220 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG683544256 or 683544256. Listed at 23 retailers as of November 4, 2026, with prices from $434 to $2,220, a $1,786 spread on the same certified stone. Brilliant Earth lists it at $2,220. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG683544256
Dimensions5.92 × 5.90 × 4.14 mm
L/W Ratio1.00
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
5.92 mm5.90 mm1.28 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG683544256
Side View
Table 67.0%Crown 41.7°Girdle: THN-MEDPavilion 37.9°Culet: NoneDepth 70.2%

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: Nov 4
Current: $2,220 USD|Low: $430 USD|High: $2,220 USD|Avg: $1,122 USD|+0.5%
Brilliant Earth
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 21
November 5, 2026
Retailer 10$434 USD
Retailer 20$486 USD
Retailer 21$487 USD
Retailer 6$539 USD
Retailer 11$539 USD
Retailer 17$685 USD
Retailer 5$768 USD
Retailer 7$848 USD
Retailer 15$880 USD
Retailer 18$929 USD
Retailer 19$947 USD
Retailer 4$957 USD
Retailer 14$1,308 USD
Retailer 2$1,316 USD
Retailer 3$1,440 USD
Retailer 16$1,511 USD
Retailer 9$1,732 USD
Retailer 12$1,763 USD
Retailer 8$1,941 USD
Retailer 13$1,973 USD
Brilliant Earth$2,220 USD

36 data points across 21 retailers

23 retailers$434 USD to $2,220 USD

A
Cheapest Retailer
-
$434 USD
A
Retailer 2
-
$486 USD
View
Final sale: no returns
A
Retailer 3
-
$487 USD
View
A
Retailer 4
-
$539 USD
View
Retailer 5
-
$539 USD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$685 USD
View
A
Retailer 7
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$768 USD
View
A
Retailer 8
-
$848 USD
View
A
Retailer 9
-
$880 USD
View
B+
Retailer 10
-
$929 USD
View
B+
Retailer 11
-
$947 USD
View
B+
Retailer 12
-
$957 USD
View
Retailer 13
-
$1,308 USD
View
Price last confirmed 28 days ago
B+
Retailer 14
-
$1,316 USD
View
B+
Retailer 15
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$1,319 USD
View
Retailer 16
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$1,440 USD
View
Price last confirmed 18 days ago
B
Retailer 17
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$1,511 USD
View
B
Retailer 18
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$1,732 USD
View
B
Retailer 19
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$1,763 USD
View
B
Retailer 20
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$1,941 USD
View
B
Retailer 21
-
$1,973 USD
View
B
Retailer 22
-
$2,086 USD
View
Most Expensive
B
Brilliant Earth
14844749A · Nov 4
$2,220 USD
View
22 more retailers have this diamond
Prices start from $434 USDSave up to $1,786 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
$434 USD