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 $374 AUD
$263 USD
As of October 28, 2026
Save $1,986 AUD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,360 AUD 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 $374 to $2,360, a $1,986 spread on the same certified stone. Brilliant Earth lists it at $2,360. 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: $2,360 AUD|Low: $419 AUD|High: $2,431 AUD|Avg: $1,154 AUD|-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$419 AUD
Retailer 4$690 AUD
Retailer 5$764 AUD
Retailer 7$774 AUD
Retailer 9$856 AUD
Retailer 3$884 AUD
Retailer 6$1,426 AUD
Retailer 10$1,496 AUD
Retailer 2$1,869 AUD
Brilliant Earth$2,360 AUD

42 data points across 10 retailers

18 retailers$374 AUD to $2,360 AUD

A
Cheapest Retailer
-
$374 AUD
$263 USD
A
Retailer 2
-
$419 AUD
$295 USD
View
Final sale: no returns
A
Retailer 3
-
$434 AUD
$305 USD
View
A
Retailer 4
-
$464 AUD
$326 USD
View
A
Retailer 5
-
$464 AUD
$326 USD
View
A
Retailer 6
-
$510 AUD
HK$2,800 HKD
View
A
Retailer 7
-
$690 AUD
$485 USD
View
A
Retailer 8
-
$764 AUD
€512 EUR
View
B+
Retailer 9
-
$774 AUD
$544 USD
View
B+
Retailer 10
-
$856 AUD
$602 USD
View
A
Retailer 11
-
$884 AUD
£490 GBP
View
B+
Retailer 12
-
$924 AUD
$650 USD
View
B
Retailer 13
-
$1,426 AUD
$1,003 USD
View
B
Retailer 14
-
$1,492 AUD
$1,049 USD
View
B
Retailer 15
-
$1,496 AUD
SGD 1,422 SGD
View
B
Retailer 16
-
$1,549 AUD
$1,089 USD
View
Price last confirmed 72 days ago
B
Retailer 17
-
$1,869 AUD
£1,035 GBP
View
Most Expensive
B
Brilliant Earth
19055812A · Oct 28
$2,360 AUD
$1,660 USD
View
17 more retailers have this diamond
Prices start from $374 AUDSave up to $1,986 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
1.83ct Oval
$374 AUD