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Oval|Lab Grown|IGI

1.00ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG758584900

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG758584900

Diamond specifications and retailer prices

From £240 GBP
$322 USD
As of October 29, 2026
Save £486 GBP (67%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £726 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown oval diamond

This 1ct lab-grown oval sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG758584900 or 758584900. Listed at 12 retailers as of October 29, 2026, with prices from £240 to £726, a £486 spread on the same certified stone. MOH London lists it at £726. 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

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758584900
Dimensions10.37 × 7.13 × 4.39 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.37 mm7.13 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758584900
Side View
Table 63.0%Crown 34.2°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.8%

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: £726 GBP|Low: £128 GBP|High: £780 GBP|Avg: £329 GBP|-5.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 13£128 GBP
Retailer 3£154 GBP
Retailer 5£165 GBP
Retailer 12£165 GBP
Retailer 11£187 GBP
Retailer 6£240 GBP
Retailer 2£274 GBP
Retailer 9£278 GBP
Retailer 7£390 GBP
Retailer 8£463 GBP
Retailer 10£525 GBP
Retailer 4£530 GBP
MOH London£726 GBP

43 data points across 13 retailers

12 retailers£240 GBP to £726 GBP

Retailer 1
-
£128 GBP
$171 USD
Price last confirmed 28 days ago
Retailer 2
-
£154 GBP
$207 USD
View
Price last confirmed 35 days ago
Retailer 3
-
£165 GBP
$221 USD
View
Price last confirmed 28 days ago
Retailer 4
-
£187 GBP
View
Price last confirmed 14 days ago
A
Retailer 5
-
£240 GBP
$322 USD
View
A
Retailer 6
-
£274 GBP
View
A
Retailer 7
-
£278 GBP
$373 USD
View
B+
Retailer 8
-
£390 GBP
$523 USD
View
B+
Retailer 9
-
£463 GBP
$620 USD
View
B
Retailer 10
-
£525 GBP
$703 USD
View
Retailer 11
-
£530 GBP
$710 USD
View
Price last confirmed 23 days ago
Most Expensive
B
MOH London
LG758584900 · Oct 29
£726 GBP
View
11 more retailers have this diamond
Prices start from £240 GBPSave up to £486 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
1.00ct Oval
£240 GBP