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Oval|Lab Grown|IGI

2.55ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG843606127

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG843606127

Diamond specifications and retailer prices

From $914 NZD
$515 USD
As of October 29, 2026
Save $4,711 NZD (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,387 NZD at Brilliant Earth · As of October 20, 2026
View at Brilliant Earth

About this 2.55ct lab-grown oval diamond

This 2.55ct lab-grown oval sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG843606127 or 843606127. Listed at 14 retailers as of October 29, 2026, with a 516% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.55
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843606127
Dimensions11.28 × 7.67 × 4.78 mm
L/W Ratio1.47
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.28 mm7.67 mm2.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843606127
Side View
Table 58.0%Crown 36.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

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: $1,064 NZD|Low: $719 NZD|High: $5,625 NZD|Avg: $1,849 NZD|+13.2%
Retailer 1
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 30, 2026
Retailer 4$719 NZD
Retailer 7$914 NZD
Retailer 10$1,043 NZD
Retailer 1$1,064 NZD
Retailer 3$1,209 NZD
Retailer 2$1,350 NZD
Retailer 12$1,379 NZD
Retailer 9$2,301 NZD
Retailer 8$2,381 NZD
Retailer 13$2,573 NZD
Retailer 5$3,008 NZD
Retailer 6$3,912 NZD
Retailer 11$5,625 NZD

23 data points across 13 retailers

14 retailers$914 NZD to $5,625 NZD

A
Cheapest Retailer
-
$914 NZD
$515 USD
B+
Retailer 2
-
$1,043 NZD
$588 USD
View
A
Retailer 3
-
$1,064 NZD
£472 GBP
View
Retailer 4
-
$1,350 NZD
£599 GBP
View
Price last confirmed 14 days ago
A
Retailer 5
-
$1,379 NZD
$777 USD
View
B
Retailer 6
-
$2,301 NZD
$1,297 USD
View
B
Retailer 7
-
$2,381 NZD
$1,342 USD
View
B
Retailer 8
-
$2,573 NZD
$1,450 USD
View
Retailer 9
-
$3,008 NZD
£1,335 GBP
View
Price last confirmed 20 days ago
B
Retailer 10
-
$3,912 NZD
$2,205 USD
View
Retailer 11
-
$4,471 NZD
$2,520 USD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$4,844 NZD
$2,730 USD
View
B
Retailer 13
-
$5,625 NZD
$3,170 USD
View
Most Expensive
Brilliant Earth
21795752A · Oct 20
$6,387 NZD
$3,600 USD
View
Price last confirmed 11 days ago
13 more retailers have this diamond
Prices start from $914 NZDSave up to $4,711 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
2.55ct Oval
$914 NZD