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Radiant|Lab Grown|IGI

2.57ct E IF Radiant Lab Grown Diamond

EX • E/IF • IGI LG685528891

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

Certificate IGI LG685528891

Diamond specifications and retailer prices

From €783 EUR
$878 USD
As of November 2, 2026
Save €4,638 EUR (86%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €5,421 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 2.57ct lab-grown radiant diamond

This 2.57ct lab-grown radiant sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG685528891 or 685528891. Listed at 14 retailers as of November 2, 2026, with prices from €783 to €5,421, a €4,638 spread on the same certified stone. Brilliant Earth lists it at €5,421. 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
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685528891
Dimensions9.98 × 6.61 × 4.39 mm
L/W Ratio1.51
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.98 mm6.61 mm2.57 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685528891
Side View
Table 63.0%Crown 42.6°Girdle: MediumPavilion 34.5°Culet: NoneDepth 66.4%

Caratlytics Score

How it works →
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 2
Current: €5,421 EUR|Low: €528 EUR|High: €5,555 EUR|Avg: €2,211 EUR|-2.4%
Brilliant Earth
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
Retailer 17
November 2, 2026
Retailer 7€528 EUR
Retailer 17€783 EUR
Retailer 11€851 EUR
Retailer 16€876 EUR
Retailer 5€908 EUR
Retailer 10€918 EUR
Retailer 2€1,390 EUR
Retailer 15€1,458 EUR
Retailer 14€2,155 EUR
Retailer 9€2,297 EUR
Retailer 4€2,527 EUR
Retailer 13€2,552 EUR
Retailer 8€2,908 EUR
Retailer 3€3,180 EUR
Retailer 6€3,226 EUR
Retailer 12€3,403 EUR
Brilliant Earth€5,421 EUR

27 data points across 17 retailers

14 retailers€783 EUR to €5,421 EUR

A
Cheapest Retailer
-
€783 EUR
$878 USD
A
Retailer 2
-
€851 EUR
$955 USD
View
A
Retailer 3
-
€876 EUR
$983 USD
View
Final sale: no returns
A
Retailer 4
-
€908 EUR
$1,018 USD
View
A
Retailer 5
-
€918 EUR
£811 GBP
View
A
Retailer 6
-
€1,390 EUR
View
A
Retailer 7
-
€1,458 EUR
$1,635 USD
View
A
Retailer 8
-
€2,155 EUR
A$3,718 AUD
View
B+
Retailer 9
-
€2,527 EUR
£2,232 GBP
View
B+
Retailer 10
-
€2,552 EUR
$2,862 USD
View
B+
Retailer 11
-
€3,180 EUR
$3,567 USD
View
Retailer 12
-
€3,226 EUR
A$5,566 AUD
View
Price last confirmed 25 days ago
B+
Retailer 13
-
€3,403 EUR
£3,005 GBP
View
Most Expensive
B
Brilliant Earth
21535490A · Nov 2
€5,421 EUR
$6,080 USD
View
13 more retailers have this diamond
Prices start from €783 EURSave up to €4,638 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
€783 EUR