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Radiant|Lab Grown|IGI

2.57ct F IF Radiant Lab Grown Diamond

EX • F/IF • IGI LG840652908

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

Certificate IGI LG840652908

Diamond specifications and retailer prices

From €448 EUR
$501 USD
As of November 1, 2026
Save €3,114 EUR (87%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €3,733 EUR at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 2.57ct lab-grown radiant diamond

This 2.57ct lab-grown radiant sits in the two to three carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840652908 or 840652908. Listed at 16 retailers as of November 1, 2026, with a 694% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.57
Carat
F
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840652908
Dimensions8.94 × 7.22 × 4.75 mm
L/W Ratio1.24
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
8.94 mm7.22 mm2.57 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840652908
Side View
Table 64.0%Crown 40.3°Girdle: MED-STKPavilion 36.8°Culet: NoneDepth 65.8%

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: €3,733 EUR|Low: €448 EUR|High: €3,733 EUR|Avg: €1,624 EUR
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 3€448 EUR
Retailer 10€580 EUR
Retailer 4€660 EUR
Retailer 12€667 EUR
Retailer 2€913 EUR
Retailer 14€1,218 EUR
Retailer 13€1,260 EUR
Retailer 15€1,324 EUR
Retailer 7€1,405 EUR
Retailer 5€1,861 EUR
Retailer 8€1,893 EUR
Retailer 6€1,921 EUR
Retailer 9€2,292 EUR
Retailer 11€2,803 EUR
Retailer 16€3,562 EUR
Rare Carat€3,733 EUR

13 data points across 16 retailers

16 retailers€448 EUR to €3,562 EUR

A
Cheapest Retailer
-
€448 EUR
$501 USD
Final sale: no returns
A
Retailer 2
-
€580 EUR
£511 GBP
View
B+
Retailer 3
-
€660 EUR
$737 USD
View
A
Retailer 4
-
€667 EUR
$745 USD
View
A
Retailer 5
-
€913 EUR
£803 GBP
View
A
Retailer 6
-
€1,218 EUR
A$2,094 AUD
View
A
Retailer 7
-
€1,260 EUR
$1,408 USD
View
A
Retailer 8
-
€1,324 EUR
ZAR 23,904 ZAR
View
A
Retailer 9
-
€1,405 EUR
$1,570 USD
View
A
Retailer 10
-
€1,861 EUR
$2,079 USD
View
A
Retailer 11
-
€1,893 EUR
$2,115 USD
View
A
Retailer 12
-
€1,921 EUR
SGD 2,900 SGD
View
B+
Retailer 13
-
€2,292 EUR
£2,016 GBP
View
B+
Retailer 14
-
€2,803 EUR
A$4,818 AUD
View
B
Retailer 15
-
€3,562 EUR
$3,980 USD
View
Most Expensive
Rare Carat
LA2653 · Oct 21
€3,733 EUR
$4,170 USD
View
Price last confirmed 11 days ago
15 more retailers have this diamond
Prices start from €448 EURSave up to €3,114 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
2.57ct Radiant
€448 EUR