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Round|Lab Grown|IGI

0.99ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG836619879

Shape and cutting style on the report: Round brilliant

Certificate IGI LG836619879

Diamond specifications and retailer prices

From £155 GBP
$208 USD
As of October 29, 2026
Save £934 GBP (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,090 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 0.99ct lab-grown round diamond

This 0.99ct lab-grown round sits in the just-under-one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836619879 or 836619879. Listed at 18 retailers as of October 29, 2026, with prices from £155 to £1,090, a £934 spread on the same certified stone. Brilliant Earth lists it at £1,090. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.99
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836619879
Dimensions6.43 × 6.48 × 3.89 mm
L/W Ratio1.01
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
6.43 mm6.48 mm0.99 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836619879
Side View
Table 59.0%Crown 33.8°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.2%

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: £1,090 GBP|Low: £155 GBP|High: £1,254 GBP|Avg: £509 GBP|-13.1%
Brilliant Earth
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 16
October 31, 2026
Retailer 14£155 GBP
Retailer 7£174 GBP
Retailer 15£180 GBP
Retailer 4£193 GBP
Retailer 16£299 GBP
Retailer 2£329 GBP
Retailer 5£331 GBP
Retailer 12£348 GBP
Retailer 9£354 GBP
Retailer 13£619 GBP
Retailer 6£621 GBP
Retailer 8£658 GBP
Retailer 3£671 GBP
Retailer 11£716 GBP
Retailer 10£775 GBP
Brilliant Earth£1,090 GBP

37 data points across 16 retailers

18 retailers£155 GBP to £1,090 GBP

A
Cheapest Retailer
-
£155 GBP
$208 USD
A
Retailer 2
-
£174 GBP
$233 USD
View
Final sale: no returns
A
Retailer 3
-
£180 GBP
$241 USD
View
A
Retailer 4
-
£193 GBP
$258 USD
View
A
Retailer 5
-
£299 GBP
$401 USD
View
A
Retailer 6
-
£329 GBP
€420 EUR
View
A
Retailer 7
-
£331 GBP
$444 USD
View
A
Retailer 8
-
£348 GBP
ZAR 7,531 ZAR
View
A
Retailer 9
-
£354 GBP
View
B+
Retailer 10
-
£619 GBP
$829 USD
View
B+
Retailer 11
-
£621 GBP
$832 USD
View
B+
Retailer 12
-
£658 GBP
$882 USD
View
B+
Retailer 13
-
£671 GBP
$899 USD
View
B+
Retailer 14
-
£716 GBP
$960 USD
View
B+
Retailer 15
-
£739 GBP
$990 USD
View
B+
Retailer 16
-
£739 GBP
$990 USD
View
B+
Retailer 17
-
£775 GBP
View
Most Expensive
B
Brilliant Earth
21589364A · Oct 29
£1,090 GBP
$1,460 USD
View
17 more retailers have this diamond
Prices start from £155 GBPSave up to £934 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
0.99ct Round
£155 GBP