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Oval|Lab Grown|IGI

1.00ct D SI1 Oval Lab Grown Diamond

GD • D/SI1 • IGI LG684503810

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG684503810

Diamond specifications and retailer prices

From £128 GBP
$171 USD
As of October 29, 2026
Save £618 GBP (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £746 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 standard cut grade and certified by IGI LG684503810 or 684503810. Listed at 15 retailers as of October 29, 2026, with prices from £128 to £746, a £618 spread on the same certified stone. MOH London lists it at £746. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG684503810
Dimensions8.65 × 5.45 × 3.31 mm
L/W Ratio1.59
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.65 mm5.45 mm1.00 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG684503810
Side View
Table 60.0%Crown 34.6°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 60.7%

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: £746 GBP|Low: £121 GBP|High: £751 GBP|Avg: £317 GBP|+2.2%
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
Retailer 14
Retailer 15
October 30, 2026
Retailer 11£128 GBP
Retailer 5£143 GBP
Retailer 13£149 GBP
Retailer 6£159 GBP
Retailer 7£159 GBP
Retailer 2£190 GBP
Retailer 3£241 GBP
Retailer 15£283 GBP
Retailer 8£283 GBP
Retailer 9£381 GBP
Retailer 14£394 GBP
Retailer 12£510 GBP
Retailer 10£539 GBP
Retailer 4£551 GBP
MOH London£746 GBP

46 data points across 15 retailers

15 retailers£128 GBP to £746 GBP

A
Cheapest Retailer
-
£128 GBP
$171 USD
B+
Retailer 2
-
£143 GBP
$192 USD
View
Final sale: no returns
B+
Retailer 3
-
£149 GBP
$199 USD
View
B+
Retailer 4
-
£159 GBP
$213 USD
View
B+
Retailer 5
-
£159 GBP
$213 USD
View
B+
Retailer 6
-
£190 GBP
View
B+
Retailer 7
-
£241 GBP
$323 USD
View
B+
Retailer 8
-
£283 GBP
$379 USD
View
B+
Retailer 9
-
£283 GBP
View
B
Retailer 10
-
£381 GBP
$510 USD
View
B
Retailer 11
-
£394 GBP
$528 USD
View
B
Retailer 12
-
£510 GBP
$683 USD
View
C
Retailer 13
-
£539 GBP
$722 USD
View
B
Retailer 14
-
£551 GBP
$738 USD
View
Most Expensive
B
MOH London
LG684503810 · Oct 29
£746 GBP
View
14 more retailers have this diamond
Prices start from £128 GBPSave up to £618 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
£128 GBP