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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 $674 AUD
HK$3,700 HKD
As of October 31, 2026
Save $2,586 AUD (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,260 AUD at Brilliant Earth · As of October 31, 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 31, 2026, with prices from $674 to $3,260, a $2,586 spread on the same certified stone. Brilliant Earth lists it at $3,260. 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
Colour
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

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 31
Current: $3,260 AUD|Low: $567 AUD|High: $5,524 AUD|Avg: $1,788 AUD|-41.0%
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
October 31, 2026
Retailer 4$567 AUD
Retailer 2$674 AUD
Retailer 9$788 AUD
Retailer 8$947 AUD
Retailer 11$967 AUD
Retailer 3$1,005 AUD
Retailer 10$1,122 AUD
Retailer 5$1,203 AUD
Retailer 7$1,522 AUD
Retailer 6$1,962 AUD
Retailer 12$2,453 AUD
Retailer 13$2,940 AUD
Brilliant Earth$3,260 AUD

40 data points across 13 retailers

16 retailers$674 AUD to $3,260 AUD

Retailer 1
-
$505 AUD
$355 USD
Price last confirmed 15 days ago
Retailer 2
-
$587 AUD
$412 USD
View
Price last confirmed 17 days ago
Retailer 3
-
$626 AUD
$440 USD
View
Price last confirmed 29 days ago
A
Retailer 4
-
$674 AUD
HK$3,700 HKD
View
A
Retailer 5
-
$788 AUD
£436 GBP
View
B+
Retailer 6
-
$947 AUD
$665 USD
View
A
Retailer 7
-
$967 AUD
€647 EUR
View
B
Retailer 8
-
$1,005 AUD
$706 USD
View
B+
Retailer 9
-
$1,122 AUD
£621 GBP
View
B+
Retailer 10
-
$1,203 AUD
$845 USD
View
B
Retailer 11
-
$1,522 AUD
$1,069 USD
View
B
Retailer 12
-
$1,962 AUD
SGD 1,862 SGD
View
Retailer 13
-
$2,016 AUD
$1,416 USD
View
Price last confirmed 16 days ago
B
Retailer 14
-
$2,453 AUD
£1,357 GBP
View
B
Retailer 15
-
$2,940 AUD
$2,065 USD
View
Most Expensive
B
Brilliant Earth
21273875A · Oct 31
$3,260 AUD
$2,290 USD
View
15 more retailers have this diamond
Prices start from $674 AUDSave up to $2,586 AUD

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
$674 AUD