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Round|Lab Grown|IGI

0.99ct D FL Round Lab Grown Diamond

EX • D/FL • IGI LG804649921

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804649921

Diamond specifications and retailer prices

From £160 GBP
$215 USD
As of November 1, 2026
Save £735 GBP (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £896 GBP at Brilliant Earth · As of October 31, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804649921 or 804649921. Listed at 19 retailers as of October 31, 2026, with prices from £160 to £896, a £735 spread on the same certified stone. Brilliant Earth lists it at £896. 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
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804649921
Dimensions6.33 × 6.29 × 3.96 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
6.33 mm6.29 mm0.99 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804649921
Side View
Table 57.0%Crown 36.2°Girdle: Slightly ThickPavilion 40.5°Culet: NoneDepth 62.8%

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: Nov 1
Current: £896 GBP|Low: £160 GBP|High: £1,470 GBP|Avg: £496 GBP|-39.1%
Brilliant Earth
Retailer 2
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Retailer 19
November 1, 2026
Retailer 18£160 GBP
Retailer 14£178 GBP
Retailer 9£186 GBP
Retailer 3£199 GBP
Retailer 16£199 GBP
Retailer 8£278 GBP
Retailer 13£334 GBP
Retailer 6£341 GBP
Retailer 2£361 GBP
Retailer 12£368 GBP
Retailer 5£373 GBP
Retailer 10£538 GBP
Retailer 17£639 GBP
Retailer 4£641 GBP
Retailer 11£679 GBP
Retailer 7£681 GBP
Retailer 19£750 GBP
Retailer 15£798 GBP
Brilliant Earth£896 GBP

32 data points across 19 retailers

19 retailers£160 GBP to £896 GBP

A
Cheapest Retailer
-
£160 GBP
$215 USD
A
Retailer 2
-
£178 GBP
$239 USD
View
Final sale: no returns
A
Retailer 3
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£186 GBP
$249 USD
View
A
Retailer 4
-
£199 GBP
$266 USD
View
Retailer 5
-
£199 GBP
$266 USD
View
Price last confirmed 7 days ago
A
Retailer 6
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£278 GBP
$372 USD
View
A
Retailer 7
-
£334 GBP
€426 EUR
View
A
Retailer 8
-
£341 GBP
$457 USD
View
A
Retailer 9
-
£361 GBP
ZAR 7,821 ZAR
View
A
Retailer 10
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£368 GBP
View
A
Retailer 11
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£373 GBP
$500 USD
View
B+
Retailer 12
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£538 GBP
SGD 975 SGD
View
B+
Retailer 13
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£639 GBP
$856 USD
View
B+
Retailer 14
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£641 GBP
$859 USD
View
B+
Retailer 15
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£679 GBP
$909 USD
View
B+
Retailer 16
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£681 GBP
$913 USD
View
B+
Retailer 17
-
£750 GBP
$1,005 USD
View
Retailer 18
-
£798 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
21434133A · Oct 31
£896 GBP
$1,200 USD
View
18 more retailers have this diamond
Prices start from £160 GBPSave up to £735 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
£160 GBP