CaratHunter
Plans
Oval|Lab Grown|IGI

2.56ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG645404808

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG645404808

Diamond specifications and retailer prices

From $529 NZD
$298 USD
As of October 29, 2026
Save $4,191 NZD (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,720 NZD 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 LG645404808 or 645404808. Listed at 16 retailers as of October 29, 2026, with prices from $529 to $4,720, a $4,191 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645404808
Dimensions11.08 × 7.78 × 4.82 mm
L/W Ratio1.42
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.08 mm7.78 mm2.56 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645404808
Side View
Table 61.0%Crown 35.4°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $4,720 NZD|Low: $507 NZD|High: $5,287 NZD|Avg: $1,571 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
October 31, 2026
Retailer 5$529 NZD
Retailer 10$614 NZD
Retailer 15$655 NZD
Retailer 16$655 NZD
Retailer 14$825 NZD
Retailer 3$994 NZD
Retailer 6$1,072 NZD
Retailer 2$1,163 NZD
Retailer 13$1,183 NZD
Retailer 7$1,324 NZD
Retailer 8$1,448 NZD
Retailer 11$2,014 NZD
Retailer 4$2,108 NZD
Retailer 9$2,630 NZD
Retailer 12$3,070 NZD
Brilliant Earth$4,720 NZD

41 data points across 16 retailers

16 retailers$529 NZD to $4,720 NZD

A
Cheapest Retailer
-
$529 NZD
$298 USD
A
Retailer 2
-
$614 NZD
$346 USD
View
A
Retailer 3
-
$655 NZD
$369 USD
View
A
Retailer 4
-
$655 NZD
$369 USD
View
Retailer 5
-
$825 NZD
£366 GBP
View
Price last confirmed 14 days ago
A
Retailer 6
-
$994 NZD
$560 USD
View
B+
Retailer 7
-
$1,072 NZD
$604 USD
View
A
Retailer 8
-
$1,163 NZD
£516 GBP
View
Retailer 9
-
$1,183 NZD
€635 EUR
View
Price last confirmed 7 days ago
B+
Retailer 10
-
$1,324 NZD
$746 USD
View
B+
Retailer 11
-
$1,448 NZD
$816 USD
View
B
Retailer 12
-
$2,014 NZD
$1,135 USD
View
B+
Retailer 13
-
$2,108 NZD
$1,188 USD
View
B
Retailer 14
-
$2,630 NZD
£1,167 GBP
View
B
Retailer 15
-
$3,070 NZD
$1,730 USD
View
Most Expensive
B
Brilliant Earth
11363332A · Oct 29
$4,720 NZD
$2,660 USD
View
15 more retailers have this diamond
Prices start from $529 NZDSave up to $4,191 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
$529 NZD