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Radiant|Lab Grown|IGI

1.28ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG800678621

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

Certificate IGI LG800678621

Diamond specifications and retailer prices

From €481 EUR
HK$4,200 HKD
As of October 31, 2026
Save €2,490 EUR (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €2,972 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG800678621 or 800678621. Listed at 13 retailers as of October 31, 2026, with prices from €481 to €2,972, a €2,490 spread on the same certified stone. Brilliant Earth lists it at €2,972. 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 angle40.2°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800678621
Dimensions8.14 × 5.39 × 3.46 mm
L/W Ratio1.51
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
8.14 mm5.39 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800678621
Side View
Table 63.0%Crown 40.2°Girdle: MediumPavilion 33.9°Culet: NoneDepth 64.2%

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: Oct 31
Current: €2,972 EUR|Low: €481 EUR|High: €2,972 EUR|Avg: €1,084 EUR
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 4€481 EUR
Retailer 12€589 EUR
Retailer 8€627 EUR
Retailer 5€672 EUR
Retailer 7€716 EUR
Retailer 2€753 EUR
Retailer 10€798 EUR
Retailer 9€958 EUR
Retailer 11€1,374 EUR
Retailer 3€1,607 EUR
Retailer 6€1,636 EUR
Brilliant Earth€2,972 EUR

44 data points across 12 retailers

13 retailers€481 EUR to €2,972 EUR

A
Cheapest Retailer
-
€481 EUR
HK$4,200 HKD
A
Retailer 2
-
€589 EUR
$658 USD
View
A
Retailer 3
-
€627 EUR
$701 USD
View
A
Retailer 4
-
€672 EUR
View
A
Retailer 5
-
€716 EUR
ZAR 12,919 ZAR
View
B+
Retailer 6
-
€753 EUR
£662 GBP
View
A
Retailer 7
-
€798 EUR
$891 USD
View
B+
Retailer 8
-
€958 EUR
$1,070 USD
View
B+
Retailer 9
-
€1,374 EUR
$1,535 USD
View
B+
Retailer 10
-
€1,607 EUR
$1,795 USD
View
B+
Retailer 11
-
€1,636 EUR
£1,439 GBP
View
Retailer 12
-
€2,104 EUR
$2,350 USD
View
Price last confirmed 73 days ago
Most Expensive
B
Brilliant Earth
20634873A · Oct 31
€2,972 EUR
$3,320 USD
View
12 more retailers have this diamond
Prices start from €481 EURSave up to €2,490 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
€481 EUR