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Round|Lab Grown|IGI

0.99ct D SI1 Round Lab Grown Diamond

FR • D/SI1 • IGI LG704591610

Shape and cutting style on the report: Round brilliant

Certificate IGI LG704591610

Diamond specifications and retailer prices

From £410 GBP
As of October 30, 2026
1 retailer carries this diamond
Only listing: £410 GBP at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 0.99ct lab-grown round diamond

This 0.99ct lab-grown round sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG704591610 or 704591610. Listed at a single retailer as of October 30, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

0.99
Carat
D
Colour
SI1
Clarity
Fair
Cut

Specifications

CutFair
PolishGood
SymmetryGood
FluorescenceNone
Crown angle34°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG704591610
Dimensions6.47 × 6.44 × 3.90 mm
L/W Ratio1.00
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
6.47 mm6.44 mm0.99 ctD / SI1
OriginLab Grown
CutFair
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI LG704591610
Side View
Table 60.0%Crown 34°Girdle: MediumPavilion 41°Culet: NoneDepth 60.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: £410 GBP|Low: £214 GBP|High: £2,885 GBP|Avg: £561 GBP
Diamond Quarter
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
July 28, 2026
Retailer 5£214 GBP
Retailer 7£301 GBP
Retailer 6£311 GBP
Retailer 4£377 GBP
Diamond Quarter£410 GBP
Retailer 3£627 GBP
Retailer 2£2,885 GBP

58 data points across 7 retailers

1 retailer

B
Diamond Quarter
0.99SI1DLG814859N · Oct 30
£410 GBP
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B
0.99ct Round
£410 GBP