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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 $994 NZD
$560 USD
As of October 31, 2026
Save $3,726 NZD (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $4,720 NZD at Brilliant Earth · As of October 31, 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 18 retailers as of October 31, 2026, with prices from $994 to $4,720, a $3,726 spread on the same certified stone. Brilliant Earth lists it at $4,720. 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $4,720 NZD|Low: $529 NZD|High: $5,287 NZD|Avg: $1,578 NZD|-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
November 1, 2026
Retailer 6$529 NZD
Retailer 4$614 NZD
Retailer 7$648 NZD
Retailer 12$655 NZD
Retailer 14$825 NZD
Retailer 15$994 NZD
Retailer 16$1,072 NZD
Retailer 9$1,127 NZD
Retailer 2$1,153 NZD
Retailer 5$1,324 NZD
Retailer 8$1,448 NZD
Retailer 13$2,014 NZD
Retailer 3$2,108 NZD
Retailer 10$2,641 NZD
Retailer 11$3,070 NZD
Brilliant Earth$4,720 NZD

39 data points across 16 retailers

18 retailers$994 NZD to $4,720 NZD

Retailer 1
-
$529 NZD
$298 USD
Price last confirmed 38 days ago
Retailer 2
-
$614 NZD
$346 USD
View
Price last confirmed 36 days ago
Retailer 3
-
$648 NZD
$365 USD
View
Price last confirmed 34 days ago
Retailer 4
-
$655 NZD
$369 USD
View
Price last confirmed 20 days ago
Retailer 5
-
$655 NZD
$369 USD
View
Price last confirmed 7 days ago
Retailer 6
-
$825 NZD
£366 GBP
View
Price last confirmed 15 days ago
A
Retailer 7
-
$994 NZD
$560 USD
View
B+
Retailer 8
-
$1,072 NZD
$604 USD
View
A
Retailer 9
-
$1,127 NZD
€605 EUR
View
A
Retailer 10
-
$1,153 NZD
£512 GBP
View
A
Retailer 11
-
$1,324 NZD
$746 USD
View
B+
Retailer 12
-
$1,448 NZD
$816 USD
View
B+
Retailer 13
-
$2,014 NZD
$1,135 USD
View
Retailer 14
-
$2,108 NZD
$1,188 USD
View
Price last confirmed 34 days ago
B
Retailer 15
-
$2,641 NZD
£1,172 GBP
View
B
Retailer 16
-
$3,070 NZD
$1,730 USD
View
Retailer 17
-
$3,132 NZD
$1,765 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
11455940A · Oct 31
$4,720 NZD
$2,660 USD
View
17 more retailers have this diamond
Prices start from $994 NZDSave up to $3,726 NZD

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
$994 NZD