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Oval|Lab Grown|IGI

2.56ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG647470400

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG647470400

Diamond specifications and retailer prices

From $525 AUD
$369 USD
As of October 25, 2026
Save $3,261 AUD (86%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,787 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.56ct lab-grown oval diamond

This 2.56ct lab-grown oval 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 LG647470400 or 647470400. Listed at 17 retailers as of October 25, 2026, with prices from $525 to $3,787, a $3,261 spread on the same certified stone. Brilliant Earth lists it at $3,787. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647470400
Dimensions10.95 × 7.79 × 4.83 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.95 mm7.79 mm2.56 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647470400
Side View
Table 61.0%Crown 35.3°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 25
Current: $3,787 AUD|Low: $424 AUD|High: $4,242 AUD|Avg: $1,274 AUD|-10.7%
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 6$424 AUD
Retailer 4$493 AUD
Retailer 7$520 AUD
Retailer 11$525 AUD
Retailer 14$662 AUD
Retailer 15$797 AUD
Retailer 16$860 AUD
Retailer 2$933 AUD
Retailer 13$949 AUD
Retailer 5$1,062 AUD
Retailer 8$1,162 AUD
Retailer 12$1,616 AUD
Retailer 3$1,691 AUD
Retailer 9$2,119 AUD
Retailer 10$2,463 AUD
Brilliant Earth$3,787 AUD

39 data points across 16 retailers

17 retailers$525 AUD to $3,787 AUD

Retailer 1
-
$424 AUD
$298 USD
Price last confirmed 37 days ago
Retailer 2
-
$493 AUD
$346 USD
View
Price last confirmed 34 days ago
Retailer 3
-
$520 AUD
$365 USD
View
Price last confirmed 33 days ago
Retailer 4
-
$525 AUD
$369 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
$525 AUD
$369 USD
View
Retailer 6
-
$662 AUD
£366 GBP
View
Price last confirmed 13 days ago
A
Retailer 7
-
$797 AUD
$560 USD
View
B+
Retailer 8
-
$860 AUD
$604 USD
View
A
Retailer 9
-
$933 AUD
£516 GBP
View
A
Retailer 10
-
$1,062 AUD
$746 USD
View
B+
Retailer 11
-
$1,162 AUD
$816 USD
View
B+
Retailer 12
-
$1,616 AUD
$1,135 USD
View
Retailer 13
-
$1,691 AUD
$1,188 USD
View
Price last confirmed 32 days ago
B
Retailer 14
-
$2,119 AUD
£1,172 GBP
View
B
Retailer 15
-
$2,463 AUD
$1,730 USD
View
Retailer 16
-
$2,513 AUD
$1,765 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
11455940A · Oct 29
$3,787 AUD
$2,660 USD
View
16 more retailers have this diamond
Prices start from $525 AUDSave up to $3,261 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
2.56ct Oval
$525 AUD