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Oval|Lab Grown|IGI

1.78ct E FL Oval Lab Grown Diamond

ID • E/FL • IGI LG836620561

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG836620561

Diamond specifications and retailer prices

From £288 GBP
$383 USD
As of October 26, 2026
Save £3,095 GBP (91%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,383 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.78ct lab-grown oval diamond

This 1.78ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836620561 or 836620561. Listed at 20 retailers as of October 26, 2026, with prices from £288 to £3,383, a £3,095 spread on the same certified stone. Rare Carat lists it at £3,383. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836620561
Dimensions10.00 × 6.65 × 4.24 mm
L/W Ratio1.50
Girdle conditionFaceted
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
10.00 mm6.65 mm1.78 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836620561
Side View
Table 58.0%Crown 34.9°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.8%

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 26
Current: £3,383 GBP|Low: £288 GBP|High: £3,420 GBP|Avg: £1,046 GBP|-1.1%
Rare Carat
Retailer 2
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Retailer 20
October 29, 2026
Retailer 20£288 GBP
Retailer 17£322 GBP
Retailer 4£327 GBP
Retailer 8£357 GBP
Retailer 16£357 GBP
Retailer 14£469 GBP
Retailer 18£567 GBP
Retailer 13£612 GBP
Retailer 9£613 GBP
Retailer 2£645 GBP
Retailer 19£999 GBP
Retailer 3£1,047 GBP
Retailer 7£1,145 GBP
Retailer 5£1,174 GBP
Retailer 11£1,227 GBP
Retailer 6£1,237 GBP
Retailer 15£1,394 GBP
Retailer 10£1,668 GBP
Retailer 12£2,816 GBP
Rare Carat£3,383 GBP

28 data points across 20 retailers

20 retailers£288 GBP to £3,383 GBP

A
Cheapest Retailer
-
£288 GBP
$383 USD
A
Retailer 2
-
£322 GBP
$429 USD
View
A
Retailer 3
-
£327 GBP
$436 USD
View
Final sale: no returns
A
Retailer 4
-
£357 GBP
$475 USD
View
A
Retailer 5
-
£357 GBP
$475 USD
View
A
Retailer 6
-
£469 GBP
$625 USD
View
A
Retailer 7
-
£567 GBP
$755 USD
View
A
Retailer 8
-
£612 GBP
ZAR 13,174 ZAR
View
A
Retailer 9
-
£613 GBP
€778 EUR
View
A
Retailer 10
-
£645 GBP
View
B+
Retailer 11
-
£999 GBP
$1,331 USD
View
B+
Retailer 12
-
£1,047 GBP
$1,394 USD
View
B+
Retailer 13
-
£1,145 GBP
$1,525 USD
View
B+
Retailer 14
-
£1,174 GBP
$1,563 USD
View
B+
Retailer 15
-
£1,227 GBP
SGD 2,208 SGD
View
B+
Retailer 16
-
£1,237 GBP
$1,647 USD
View
B+
Retailer 17
-
£1,394 GBP
View
B+
Retailer 18
-
£1,668 GBP
$2,221 USD
View
B
Retailer 19
-
£2,816 GBP
$3,750 USD
View
Most Expensive
B
Rare Carat
PD-241524 · Oct 28
£3,383 GBP
$4,505 USD
View
19 more retailers have this diamond
Prices start from £288 GBPSave up to £3,095 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
1.78ct Oval
£288 GBP