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Round|Lab Grown|IGI

2.55ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG756510880

Shape and cutting style on the report: Round brilliant

Certificate IGI LG756510880

Diamond specifications and retailer prices

From $294 USD
As of October 29, 2026
Save $1,666 USD (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $1,960 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.55ct lab-grown round diamond

This 2.55ct 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 LG756510880 or 756510880. Listed at 18 retailers as of October 29, 2026, with prices from $294 to $1,960, a $1,666 spread on the same certified stone. Brilliant Earth lists it at $1,960. 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

2.55
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG756510880
Dimensions8.67 × 8.70 × 5.45 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.67 mm8.70 mm2.55 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG756510880
Side View
Table 58.0%Crown 35.8°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.8%

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: Oct 29
Current: $1,960 USD|Low: $206 USD|High: $2,020 USD|Avg: $736 USD|-3.0%
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 30, 2026
Retailer 8$206 USD
Retailer 13$294 USD
Retailer 4$328 USD
Retailer 5$364 USD
Retailer 6$364 USD
Retailer 7$441 USD
Retailer 11$520 USD
Retailer 2$642 USD
Retailer 10$656 USD
Retailer 14$764 USD
Retailer 12$880 USD
Retailer 15$1,170 USD
Retailer 3$1,219 USD
Retailer 9$1,467 USD
Retailer 16$1,492 USD
Brilliant Earth$1,960 USD

34 data points across 16 retailers

18 retailers$294 USD to $1,960 USD

A
Cheapest Retailer
-
$294 USD
A
Retailer 2
-
$328 USD
View
Final sale: no returns
A
Retailer 3
-
$364 USD
View
Retailer 4
-
$364 USD
View
Price last confirmed 60 days ago
A
Retailer 5
-
$364 USD
View
B+
Retailer 6
-
$441 USD
View
A
Retailer 7
-
$520 USD
View
A
Retailer 8
-
$642 USD
£505 GBP
View
A
Retailer 9
-
$656 USD
€625 EUR
View
A
Retailer 10
-
$764 USD
View
B+
Retailer 11
-
$880 USD
View
Retailer 12
-
$931 USD
View
Price last confirmed 9 days ago
B
Retailer 13
-
$1,170 USD
View
B+
Retailer 14
-
$1,219 USD
View
B
Retailer 15
-
$1,467 USD
£1,155 GBP
View
B
Retailer 16
-
$1,492 USD
View
Retailer 17
-
$1,633 USD
View
Price last confirmed 75 days ago
Most Expensive
B
Brilliant Earth
20960836A · Oct 29
$1,960 USD
View
17 more retailers have this diamond
Prices start from $294 USDSave up to $1,666 USD

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
2.55ct Round
$294 USD