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Oval|Lab Grown|IGI

1.01ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG770640640

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG770640640

Diamond specifications and retailer prices

From £125 GBP
As of November 5, 2026
Save £687 GBP (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £812 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.01ct lab-grown oval diamond

This 1.01ct 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 LG770640640 or 770640640. Listed at 22 retailers as of November 5, 2026, with prices from £125 to £812, a £687 spread on the same certified stone. Reve Diamonds lists it at £812. 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

1.01
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770640640
Dimensions8.14 × 5.79 × 3.33 mm
L/W Ratio1.41
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
8.14 mm5.79 mm1.01 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770640640
Side View
Table 59.0%Crown 32.4°Girdle: MED-THKPavilion 38.6°Culet: NoneDepth 57.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £139 GBP|Low: £123 GBP|High: £812 GBP|Avg: £357 GBP|+0.5%
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
Retailer 17
Reve Diamonds
November 6, 2026
Retailer 7£125 GBP
Retailer 1£139 GBP
Retailer 17£144 GBP
Retailer 5£155 GBP
Retailer 9£155 GBP
Retailer 2£244 GBP
Retailer 10£270 GBP
Retailer 4£277 GBP
Retailer 15£298 GBP
Retailer 3£335 GBP
Retailer 13£351 GBP
Retailer 16£358 GBP
Retailer 6£496 GBP
Retailer 11£501 GBP
Retailer 14£524 GBP
Retailer 8£536 GBP
Retailer 12£719 GBP
Reve Diamonds£812 GBP

45 data points across 18 retailers

22 retailers£125 GBP to £812 GBP

Retailer 1
-
£123 GBP
Price last confirmed 45 days ago
A
Retailer 2
-
£125 GBP
View
A
Retailer 3
-
£139 GBP
View
Final sale: no returns
A
Retailer 4
-
£144 GBP
View
Retailer 5
-
£151 GBP
View
Price last confirmed 45 days ago
A
Retailer 6
-
£155 GBP
View
Retailer 7
-
£155 GBP
View
Price last confirmed 12 days ago
A
Retailer 8
-
£244 GBP
View
A
Retailer 9
-
£270 GBP
View
A
Retailer 10
-
£277 GBP
View
B+
Retailer 11
-
£298 GBP
View
B+
Retailer 12
-
£335 GBP
View
B+
Retailer 13
-
£351 GBP
View
B+
Retailer 14
-
£358 GBP
View
B+
Retailer 15
-
£409 GBP
View
Retailer 16
-
£492 GBP
View
Price last confirmed 46 days ago
B
Retailer 17
-
£496 GBP
View
B
Retailer 18
-
£501 GBP
View
B
Retailer 19
-
£524 GBP
View
B
Retailer 20
-
£536 GBP
View
B
Retailer 21
-
£719 GBP
View
Most Expensive
B
Reve Diamonds
B1F448FFC · Nov 6
£812 GBP
$1,087 USD
View
21 more retailers have this diamond
Prices start from £125 GBPSave up to £687 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
1.01ct Oval
£125 GBP