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Round|Lab Grown|IGI

1.28ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG805668631

Shape and cutting style on the report: Round brilliant

Certificate IGI LG805668631

Diamond specifications and retailer prices

From €323 EUR
$362 USD
As of November 1, 2026
2 retailers carry this diamond
Most expensive: €1,118 EUR at Rare Carat · As of August 16, 2026
View at Rare Carat

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round 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 LG805668631 or 805668631. Listed at 2 retailers as of November 1, 2026. 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 angle35.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805668631
Dimensions6.99 × 6.99 × 6.99 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.99 mm6.99 mm1.28 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805668631
Side View
Table 57.0%Crown 35.8°Girdle: MediumPavilion 40.7°CuletDepth 61.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: €1,118 EUR|Low: €251 EUR|High: €17,974 EUR|Avg: €1,678 EUR|-3.1%
Rare Carat
Retailer 2
Retailer 3
September 15, 2026
Retailer 3€251 EUR
Retailer 2€323 EUR
Rare Carat€1,118 EUR

6 data points across 3 retailers

2 retailers

B+
Cheapest Retailer
-
€323 EUR
$362 USD
Most Expensive
Rare Carat
PM714-298A · Aug 16
€1,118 EUR
$1,254 USD
View
Price last confirmed 78 days ago
1 more retailer has this diamond
Prices start from €323 EUR

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.

B+
1.28ct Round
€323 EUR