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Oval|Lab Grown|IGI

1.00ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG823616787

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG823616787

Diamond specifications and retailer prices

From £115 GBP
$154 USD
As of October 29, 2026
Save £666 GBP (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £781 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

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 LG823616787 or 823616787. Listed at 16 retailers as of October 29, 2026, with prices from £115 to £781, a £666 spread on the same certified stone. Reve Diamonds lists it at £781. 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 angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823616787
Dimensions7.79 × 5.66 × 3.51 mm
L/W Ratio1.38
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
7.79 mm5.66 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823616787
Side View
Table 61.0%Crown 34.2°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 62.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £142 GBP|Low: £88 GBP|High: £781 GBP|Avg: £332 GBP|+59.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Reve Diamonds
October 30, 2026
Retailer 5£115 GBP
Retailer 1£142 GBP
Retailer 7£239 GBP
Retailer 4£249 GBP
Retailer 3£260 GBP
Retailer 9£343 GBP
Retailer 10£360 GBP
Retailer 2£440 GBP
Retailer 6£499 GBP
Retailer 8£646 GBP
Reve Diamonds£781 GBP

43 data points across 11 retailers

16 retailers£115 GBP to £781 GBP

A
Cheapest Retailer
-
£115 GBP
$154 USD
A
Retailer 2
-
£129 GBP
$173 USD
View
A
Retailer 3
-
£138 GBP
$185 USD
View
A
Retailer 4
-
£138 GBP
$185 USD
View
A
Retailer 5
-
£142 GBP
$190 USD
View
Final sale: no returns
A
Retailer 6
-
£236 GBP
$316 USD
View
A
Retailer 7
-
£239 GBP
€305 EUR
View
A
Retailer 8
-
£249 GBP
View
A
Retailer 9
-
£260 GBP
$348 USD
View
B+
Retailer 10
-
£343 GBP
A$708 AUD
View
B+
Retailer 11
-
£360 GBP
$483 USD
View
B+
Retailer 12
-
£440 GBP
$590 USD
View
B+
Retailer 13
-
£444 GBP
$595 USD
View
B
Retailer 14
-
£499 GBP
$669 USD
View
B
Retailer 15
-
£646 GBP
View
Most Expensive
B
Reve Diamonds
E3F67A94C · Oct 30
£781 GBP
$1,046 USD
View
15 more retailers have this diamond
Prices start from £115 GBPSave up to £666 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
£115 GBP