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Oval|Lab Grown|IGI

1.09ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG770640922

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG770640922

Diamond specifications and retailer prices

From £133 GBP
$178 USD
As of October 29, 2026
Save £705 GBP (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £838 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.09ct lab-grown oval diamond

This 1.09ct lab-grown oval sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770640922 or 770640922. Listed at 19 retailers as of October 29, 2026, with prices from £133 to £838, a £705 spread on the same certified stone. Reve Diamonds lists it at £838. 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

1.09
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770640922
Dimensions8.51 × 5.85 × 3.52 mm
L/W Ratio1.45
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
8.51 mm5.85 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770640922
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 60.2%

Caratlytics Score

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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: £373 GBP|Low: £104 GBP|High: £838 GBP|Avg: £385 GBP
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
Retailer 14
Retailer 15
Retailer 16
Reve Diamonds
October 31, 2026
Retailer 5£133 GBP
Retailer 3£149 GBP
Retailer 12£154 GBP
Retailer 7£164 GBP
Retailer 16£164 GBP
Retailer 13£253 GBP
Retailer 15£292 GBP
Retailer 9£295 GBP
Retailer 11£315 GBP
Retailer 14£346 GBP
Retailer 1£373 GBP
Retailer 2£432 GBP
Retailer 8£440 GBP
Retailer 4£528 GBP
Retailer 6£569 GBP
Retailer 10£772 GBP
Reve Diamonds£838 GBP

45 data points across 17 retailers

19 retailers£133 GBP to £838 GBP

Retailer 1
-
£131 GBP
$176 USD
Price last confirmed 39 days ago
A
Retailer 2
-
£133 GBP
$178 USD
View
A
Retailer 3
-
£149 GBP
$199 USD
View
Final sale: no returns
A
Retailer 4
-
£154 GBP
$206 USD
View
Retailer 5
-
£161 GBP
$216 USD
View
Price last confirmed 39 days ago
A
Retailer 6
-
£164 GBP
$220 USD
View
A
Retailer 7
-
£164 GBP
$220 USD
View
A
Retailer 8
-
£253 GBP
$339 USD
View
A
Retailer 9
-
£292 GBP
$391 USD
View
A
Retailer 10
-
£295 GBP
View
B+
Retailer 11
-
£315 GBP
€402 EUR
View
B+
Retailer 12
-
£346 GBP
$463 USD
View
B+
Retailer 13
-
£373 GBP
A$768 AUD
View
B
Retailer 14
-
£432 GBP
$579 USD
View
B+
Retailer 15
-
£440 GBP
$590 USD
View
B
Retailer 16
-
£528 GBP
$708 USD
View
B
Retailer 17
-
£569 GBP
$762 USD
View
B
Retailer 18
-
£772 GBP
View
Most Expensive
B
Reve Diamonds
050915544 · Oct 30
£838 GBP
$1,122 USD
View
18 more retailers have this diamond
Prices start from £133 GBPSave up to £705 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
1.09ct Oval
£133 GBP