Radiant|Lab Grown|IGI

1.28ct D FL Radiant Lab Grown Diamond

VG • D/FL • IGI LG815697866

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

Certificate IGI LG815697866

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: €2,605 EUR at Rare Carat · As of October 21, 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 very-good cut grade and certified by IGI LG815697866 or 815697866. 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. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
D
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815697866
Dimensions7.50 × 5.23 × 3.65 mm
L/W Ratio1.43
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
7.50 mm5.23 mm1.28 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815697866
Side View
Table 70.0%Crown 46°Girdle: MED-STKPavilion 36.8°Culet: NoneDepth 69.8%

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 1
Current: €2,605 EUR|Low: €243 EUR|High: €2,945 EUR|Avg: €1,030 EUR|+23.9%
Rare Carat
Retailer 2
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Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 17
November 1, 2026
Retailer 5€243 EUR
Retailer 6€274 EUR
Retailer 2€301 EUR
Retailer 14€447 EUR
Retailer 3€611 EUR
Retailer 7€688 EUR
Retailer 4€704 EUR
Retailer 17€747 EUR
Retailer 8€801 EUR
Retailer 13€856 EUR
Retailer 16€859 EUR
Retailer 15€985 EUR
Retailer 11€1,180 EUR
Retailer 9€1,403 EUR
Retailer 10€1,799 EUR
Retailer 12€2,050 EUR
Rare Carat€2,605 EUR

20 data points across 17 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
-
€1,180 EUR
£1,038 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
PE1710_l_831604041 · Oct 21
€2,605 EUR
$2,910 USD
View
Price last confirmed 11 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