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Oval|Lab Grown|IGI

0.99ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG770686327

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG770686327

Diamond specifications and retailer prices

From £101 GBP
$134 USD
As of October 26, 2026
Save £944 GBP (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,044 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.99ct lab-grown oval diamond

This 0.99ct lab-grown oval sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770686327 or 770686327. Listed at 17 retailers as of October 26, 2026, with prices from £101 to £1,044, a £944 spread on the same certified stone. MOH London lists it at £1,044. 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

0.99
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.4°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770686327
Dimensions7.87 × 5.50 × 3.41 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.87 mm5.50 mm0.99 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG770686327
Side View
Table 63.0%Crown 36.4°Girdle: MED-STKPavilion 40°Culet: NoneDepth 62.0%

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 26
Current: £1,044 GBP|Low: £97 GBP|High: £1,056 GBP|Avg: £289 GBP|-1.1%
MOH London
Retailer 2
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Retailer 18
October 27, 2026
Retailer 16£101 GBP
Retailer 6£113 GBP
Retailer 13£117 GBP
Retailer 15£125 GBP
Retailer 12£144 GBP
Retailer 4£166 GBP
Retailer 10£194 GBP
Retailer 2£210 GBP
Retailer 18£216 GBP
Retailer 5£235 GBP
Retailer 11£268 GBP
Retailer 8£309 GBP
Retailer 14£314 GBP
Retailer 17£334 GBP
Retailer 9£346 GBP
Retailer 3£402 GBP
Retailer 7£436 GBP
MOH London£1,044 GBP

31 data points across 18 retailers

17 retailers£101 GBP to £1,044 GBP

A
Cheapest Retailer
-
£101 GBP
$134 USD
A
Retailer 2
-
£113 GBP
$150 USD
View
Final sale: no returns
A
Retailer 3
-
£117 GBP
$156 USD
View
A
Retailer 4
-
£125 GBP
$166 USD
View
A
Retailer 5
-
£144 GBP
HK$1,500 HKD
View
A
Retailer 6
-
£166 GBP
View
Price last confirmed 12 days ago
A
Retailer 7
-
£194 GBP
$258 USD
View
A
Retailer 8
-
£210 GBP
View
B+
Retailer 9
-
£235 GBP
$313 USD
View
A
Retailer 10
-
£268 GBP
View
A
Retailer 11
-
£309 GBP
$412 USD
View
A
Retailer 12
-
£314 GBP
$418 USD
View
B+
Retailer 13
-
£334 GBP
$445 USD
View
B+
Retailer 14
-
£346 GBP
SGD 622 SGD
View
B+
Retailer 15
-
£402 GBP
$535 USD
View
B+
Retailer 16
-
£436 GBP
$580 USD
View
Most Expensive
B
MOH London
LG770686327 · Oct 26
£1,044 GBP
View
16 more retailers have this diamond
Prices start from £101 GBPSave up to £944 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
0.99ct Oval
£101 GBP