Oval|Lab Grown|IGI

2.57ct F SI1 Oval Lab Grown Diamond

EX • F/SI1 • IGI LG635451492

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG635451492

Diamond specifications and retailer prices

From €1,276 EUR
£1,127 GBP
As of October 26, 2026
15 retailers carry this diamond
Most expensive: €2,175 EUR at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 2.57ct lab-grown oval diamond

This 2.57ct lab-grown oval sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG635451492 or 635451492. Listed at 15 retailers as of October 26, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.57
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG635451492
Dimensions10.88 × 7.80 × 4.86 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.88 mm7.80 mm2.57 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG635451492
Side View
Table 60.0%Crown 35.1°Girdle: MediumPavilion 41.1°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: €2,175 EUR|Low: €257 EUR|High: €2,381 EUR|Avg: €774 EUR|-8.6%
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
October 26, 2026
Retailer 6€257 EUR
Retailer 4€298 EUR
Retailer 7€314 EUR
Retailer 9€318 EUR
Retailer 15€395 EUR
Retailer 11€459 EUR
Retailer 16€522 EUR
Retailer 2€551 EUR
Retailer 14€579 EUR
Retailer 5€654 EUR
Retailer 8€719 EUR
Retailer 12€977 EUR
Retailer 3€1,023 EUR
Retailer 10€1,276 EUR
Retailer 13€1,591 EUR
Brilliant Earth€2,175 EUR

31 data points across 16 retailers

15 retailers

Retailer 1
-
€257 EUR
$288 USD
Price last confirmed 40 days ago
Retailer 2
-
€298 EUR
$334 USD
View
Price last confirmed 37 days ago
Retailer 3
-
€314 EUR
$352 USD
View
Price last confirmed 36 days ago
Retailer 4
-
€318 EUR
$357 USD
View
Price last confirmed 21 days ago
Retailer 5
-
€318 EUR
$357 USD
View
Price last confirmed 8 days ago
Retailer 6
-
€459 EUR
$515 USD
View
Price last confirmed 6 days ago
Retailer 7
-
€522 EUR
$586 USD
View
Price last confirmed 7 days ago
Retailer 8
-
€551 EUR
£487 GBP
View
Price last confirmed 7 days ago
Retailer 9
-
€654 EUR
$734 USD
View
Price last confirmed 7 days ago
Retailer 10
-
€719 EUR
$806 USD
View
Price last confirmed 7 days ago
Retailer 11
-
€977 EUR
$1,096 USD
View
Price last confirmed 7 days ago
Retailer 12
-
€1,023 EUR
$1,147 USD
View
Price last confirmed 35 days ago
B
Retailer 13
-
€1,276 EUR
£1,127 GBP
View
Retailer 14
-
€1,591 EUR
$1,785 USD
View
Price last confirmed 12 days ago
Most Expensive
Brilliant Earth
10435716A · Oct 26
€2,175 EUR
$2,440 USD
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from €1,276 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.

B
2.57ct Oval
€1,276 EUR