CaratHunter
Plans
Oval|Lab Grown|IGI

1.83ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG514270728

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG514270728

Diamond specifications and retailer prices

From $469 NZD
$263 USD
As of October 28, 2026
Save $2,489 NZD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,957 NZD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.83ct lab-grown oval diamond

This 1.83ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG514270728 or 514270728. Listed at 18 retailers as of October 28, 2026, with prices from $469 to $2,957, a $2,489 spread on the same certified stone. Brilliant Earth lists it at $2,957. 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

1.83
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514270728
Dimensions9.77 × 6.91 × 4.33 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.77 mm6.91 mm1.83 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514270728
Side View
Table 57.0%Crown 35.8°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.7%

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 28
Current: $2,957 NZD|Low: $526 NZD|High: $3,046 NZD|Avg: $1,445 NZD|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 8$526 NZD
Retailer 4$864 NZD
Retailer 5$958 NZD
Retailer 7$969 NZD
Retailer 9$1,072 NZD
Retailer 3$1,108 NZD
Retailer 6$1,787 NZD
Retailer 10$1,875 NZD
Retailer 2$2,342 NZD
Brilliant Earth$2,957 NZD

42 data points across 10 retailers

18 retailers$469 NZD to $2,957 NZD

A
Cheapest Retailer
-
$469 NZD
$263 USD
A
Retailer 2
-
$526 NZD
$295 USD
View
Final sale: no returns
A
Retailer 3
-
$543 NZD
$305 USD
View
A
Retailer 4
-
$581 NZD
$326 USD
View
A
Retailer 5
-
$581 NZD
$326 USD
View
A
Retailer 6
-
$638 NZD
HK$2,800 HKD
View
A
Retailer 7
-
$864 NZD
$485 USD
View
A
Retailer 8
-
$958 NZD
€512 EUR
View
B+
Retailer 9
-
$969 NZD
$544 USD
View
B+
Retailer 10
-
$1,072 NZD
$602 USD
View
A
Retailer 11
-
$1,108 NZD
£490 GBP
View
B+
Retailer 12
-
$1,158 NZD
$650 USD
View
B
Retailer 13
-
$1,787 NZD
$1,003 USD
View
B
Retailer 14
-
$1,869 NZD
$1,049 USD
View
B
Retailer 15
-
$1,875 NZD
SGD 1,422 SGD
View
B
Retailer 16
-
$1,941 NZD
$1,089 USD
View
Price last confirmed 72 days ago
B
Retailer 17
-
$2,342 NZD
£1,035 GBP
View
Most Expensive
B
Brilliant Earth
19055812A · Oct 28
$2,957 NZD
$1,660 USD
View
17 more retailers have this diamond
Prices start from $469 NZDSave up to $2,489 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
1.83ct Oval
$469 NZD