Marquise|Lab Grown|IGI

2.55ct E SI1 Marquise Lab Grown Diamond

VG • E/SI1 • IGI LG831648740

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG831648740

Diamond specifications and retailer prices

From $486 USD
HK$3,800 HKD
As of October 30, 2026
Save $1,874 USD (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,360 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.55ct lab-grown marquise diamond

This 2.55ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG831648740 or 831648740. Listed at 16 retailers as of October 30, 2026, with prices from $486 to $2,360, a $1,874 spread on the same certified stone. Brilliant Earth lists it at $2,360. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.55
Carat
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831648740
Dimensions13.93 × 7.15 × 4.59 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.93 mm7.15 mm2.55 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831648740
Side View
Table 57.0%Crown 34.6°Girdle: MED-STKPavilion 41°Culet: NoneDepth 64.2%

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: Oct 30
Current: $2,360 USD|Low: $398 USD|High: $3,880 USD|Avg: $1,250 USD|-39.2%
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
October 31, 2026
Retailer 3$398 USD
Retailer 5$486 USD
Retailer 8$553 USD
Retailer 7$665 USD
Retailer 10$679 USD
Retailer 13$706 USD
Retailer 9$788 USD
Retailer 4$845 USD
Retailer 6$1,069 USD
Retailer 2$1,378 USD
Retailer 11$1,723 USD
Retailer 12$2,065 USD
Brilliant Earth$2,360 USD

41 data points across 13 retailers

16 retailers$486 USD to $2,360 USD

Retailer 1
-
$355 USD
Price last confirmed 14 days ago
Retailer 2
-
$412 USD
View
Price last confirmed 16 days ago
Retailer 3
-
$440 USD
View
Price last confirmed 28 days ago
A
Retailer 4
-
$486 USD
HK$3,800 HKD
View
A
Retailer 5
-
$553 USD
£436 GBP
View
B+
Retailer 6
-
$665 USD
View
A
Retailer 7
-
$679 USD
€647 EUR
View
B
Retailer 8
-
$706 USD
View
B+
Retailer 9
-
$788 USD
£621 GBP
View
B+
Retailer 10
-
$845 USD
View
B
Retailer 11
-
$1,069 USD
View
B
Retailer 12
-
$1,378 USD
SGD 1,862 SGD
View
Retailer 13
-
$1,416 USD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$1,723 USD
£1,357 GBP
View
B
Retailer 15
-
$2,065 USD
View
Most Expensive
B
Brilliant Earth
21273875A · Oct 30
$2,360 USD
View
15 more retailers have this diamond
Prices start from $486 USDSave up to $1,874 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 Marquise
$486 USD