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Radiant|Lab Grown|IGI

1.28ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG816602405

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG816602405

Diamond specifications and retailer prices

From €301 EUR
£265 GBP
As of November 1, 2026
Save €1,748 EUR (85%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €2,215 EUR at Rare Carat · As of October 18, 2026
View at Rare Carat

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816602405 or 816602405. Listed at 9 retailers as of October 31, 2026, with a 580% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816602405
Dimensions7.74 × 5.26 × 3.72 mm
L/W Ratio1.47
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
7.74 mm5.26 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816602405
Side View
Table 62.0%Crown 38.8°Girdle: MediumPavilion 39.4°Culet: NoneDepth 70.7%

Caratlytics Score

How it works →
A+
Exceptional
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €2,215 EUR|Low: €243 EUR|High: €2,945 EUR|Avg: €1,022 EUR|+5.4%
Rare Carat
Retailer 2
Retailer 3
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Retailer 6
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Retailer 8
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Retailer 10
Retailer 11
Retailer 12
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Retailer 18
November 1, 2026
Retailer 5€243 EUR
Retailer 10€274 EUR
Retailer 11€301 EUR
Retailer 15€447 EUR
Retailer 3€611 EUR
Retailer 7€688 EUR
Retailer 4€704 EUR
Retailer 18€747 EUR
Retailer 8€801 EUR
Retailer 14€856 EUR
Retailer 17€859 EUR
Retailer 16€985 EUR
Retailer 6€1,159 EUR
Retailer 2€1,173 EUR
Retailer 9€1,403 EUR
Retailer 12€1,799 EUR
Retailer 13€2,050 EUR
Rare Carat€2,215 EUR

21 data points across 18 retailers

9 retailers€301 EUR to €2,050 EUR

A+
Cheapest Retailer
-
€301 EUR
£265 GBP
A
Retailer 2
-
€447 EUR
$499 USD
View
B+
Retailer 3
-
€856 EUR
$956 USD
View
Retailer 4
-
€859 EUR
$960 USD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
€985 EUR
$1,100 USD
View
B+
Retailer 6
-
€1,173 EUR
£1,032 GBP
View
B
Retailer 7
-
€1,799 EUR
$2,010 USD
View
B
Retailer 8
-
€2,050 EUR
$2,290 USD
View
Most Expensive
Rare Carat
PD-217234 · Oct 18
€2,215 EUR
$2,475 USD
View
Price last confirmed 13 days ago
8 more retailers have this diamond
Prices start from €301 EURSave up to €1,748 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.

A+
1.28ct Radiant
€301 EUR