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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 £197 GBP
$263 USD
As of October 29, 2026
Save £1,049 GBP (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,247 GBP at Brilliant Earth · As of October 29, 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 29, 2026, with prices from £197 to £1,247, a £1,049 spread on the same certified stone. Brilliant Earth lists it at £1,247. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,247 GBP|Low: £222 GBP|High: £1,284 GBP|Avg: £609 GBP|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8£222 GBP
Retailer 4£364 GBP
Retailer 5£404 GBP
Retailer 7£409 GBP
Retailer 9£452 GBP
Retailer 2£469 GBP
Retailer 6£753 GBP
Retailer 10£790 GBP
Retailer 3£987 GBP
Brilliant Earth£1,247 GBP

43 data points across 10 retailers

18 retailers£197 GBP to £1,247 GBP

A
Cheapest Retailer
-
£197 GBP
$263 USD
A
Retailer 2
-
£222 GBP
$295 USD
View
Final sale: no returns
A
Retailer 3
-
£229 GBP
$305 USD
View
A
Retailer 4
-
£245 GBP
$326 USD
View
A
Retailer 5
-
£245 GBP
$326 USD
View
A
Retailer 6
-
£269 GBP
HK$2,800 HKD
View
A
Retailer 7
-
£364 GBP
$485 USD
View
A
Retailer 8
-
£404 GBP
€512 EUR
View
B+
Retailer 9
-
£409 GBP
$544 USD
View
B+
Retailer 10
-
£452 GBP
$602 USD
View
A
Retailer 11
-
£469 GBP
View
B+
Retailer 12
-
£488 GBP
$650 USD
View
B
Retailer 13
-
£753 GBP
$1,003 USD
View
B
Retailer 14
-
£788 GBP
$1,049 USD
View
B
Retailer 15
-
£790 GBP
SGD 1,422 SGD
View
Retailer 16
-
£818 GBP
$1,089 USD
View
Price last confirmed 73 days ago
B
Retailer 17
-
£987 GBP
View
Most Expensive
B
Brilliant Earth
19055812A · Oct 29
£1,247 GBP
$1,660 USD
View
17 more retailers have this diamond
Prices start from £197 GBPSave up to £1,049 GBP

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
£197 GBP