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Round|Lab Grown|IGI

2.56ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG799669520

Shape and cutting style on the report: Round brilliant

Certificate IGI LG799669520

Diamond specifications and retailer prices

From €345 EUR
$387 USD
As of November 1, 2026
Save €2,588 EUR (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €2,933 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 2.56ct lab-grown round diamond

This 2.56ct lab-grown round sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG799669520 or 799669520. Listed at 13 retailers as of October 31, 2026, with prices from €345 to €2,933, a €2,588 spread on the same certified stone. Brilliant Earth lists it at €2,933. 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

2.56
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799669520
Dimensions8.85 × 8.79 × 5.39 mm
L/W Ratio1.01
Girdle conditionFaceted
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
8.85 mm8.79 mm2.56 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799669520
Side View
Table 56.0%Crown 34°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €2,933 EUR|Low: €345 EUR|High: €3,022 EUR|Avg: €960 EUR|-2.9%
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
November 2, 2026
Retailer 11€345 EUR
Retailer 12€387 EUR
Retailer 4€428 EUR
Retailer 2€679 EUR
Retailer 3€681 EUR
Retailer 8€682 EUR
Retailer 13€683 EUR
Retailer 5€715 EUR
Retailer 6€774 EUR
Retailer 10€1,058 EUR
Retailer 9€1,382 EUR
Retailer 7€1,674 EUR
Brilliant Earth€2,933 EUR

34 data points across 13 retailers

13 retailers€345 EUR to €2,933 EUR

A
Cheapest Retailer
-
€345 EUR
$387 USD
A
Retailer 2
-
€387 EUR
$434 USD
View
Final sale: no returns
Retailer 3
-
€428 EUR
$480 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
€679 EUR
View
B+
Retailer 5
-
€681 EUR
$764 USD
View
A
Retailer 6
-
€682 EUR
$765 USD
View
A
Retailer 7
-
€683 EUR
$766 USD
View
B+
Retailer 8
-
€715 EUR
$802 USD
View
A
Retailer 9
-
€774 EUR
£683 GBP
View
B+
Retailer 10
-
€1,058 EUR
$1,187 USD
View
B
Retailer 11
-
€1,382 EUR
$1,550 USD
View
B
Retailer 12
-
€1,674 EUR
£1,478 GBP
View
Most Expensive
B
Brilliant Earth
20554768A · Oct 31
€2,933 EUR
$3,290 USD
View
12 more retailers have this diamond
Prices start from €345 EURSave up to €2,588 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
2.56ct Round
€345 EUR