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Round|Lab Grown|IGI

0.99ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG722571582

Shape and cutting style on the report: Round brilliant

Certificate IGI LG722571582

Diamond specifications and retailer prices

From £122 GBP
$164 USD
As of October 29, 2026
Save £682 GBP (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £805 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

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 top-tier cut grade and certified by IGI LG722571582 or 722571582. Listed at 18 retailers as of October 29, 2026, with prices from £122 to £805, a £682 spread on the same certified stone. Reve Diamonds lists it at £805. 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

0.99
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG722571582
Dimensions6.44 × 6.39 × 3.92 mm
L/W Ratio1.01
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
6.44 mm6.39 mm0.99 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG722571582
Side View
Table 56.0%Crown 33.7°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.0%

Caratlytics Score

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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: £268 GBP|Low: £96 GBP|High: £805 GBP|Avg: £345 GBP|+7.5%
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
Reve Diamonds
October 30, 2026
Retailer 10£122 GBP
Retailer 7£137 GBP
Retailer 11£142 GBP
Retailer 4£152 GBP
Retailer 13£221 GBP
Retailer 1£268 GBP
Retailer 3£273 GBP
Retailer 14£284 GBP
Retailer 9£295 GBP
Retailer 2£331 GBP
Retailer 5£393 GBP
Retailer 12£416 GBP
Retailer 6£529 GBP
Retailer 8£713 GBP
Reve Diamonds£805 GBP

43 data points across 15 retailers

18 retailers£122 GBP to £805 GBP

Retailer 1
-
£122 GBP
$163 USD
Price last confirmed 42 days ago
A
Retailer 2
-
£122 GBP
$164 USD
View
A
Retailer 3
-
£137 GBP
$183 USD
View
Final sale: no returns
A
Retailer 4
-
£142 GBP
$190 USD
View
Retailer 5
-
£149 GBP
$199 USD
View
Price last confirmed 40 days ago
A
Retailer 6
-
£152 GBP
$203 USD
View
A
Retailer 7
-
£221 GBP
$296 USD
View
A
Retailer 8
-
£268 GBP
View
B+
Retailer 9
-
£273 GBP
$366 USD
View
Retailer 10
-
£284 GBP
$380 USD
View
Price last confirmed 12 days ago
B+
Retailer 11
-
£295 GBP
€376 EUR
View
B+
Retailer 12
-
£331 GBP
$444 USD
View
B+
Retailer 13
-
£393 GBP
$526 USD
View
B+
Retailer 14
-
£416 GBP
A$858 AUD
View
Retailer 15
-
£484 GBP
$648 USD
View
Price last confirmed 39 days ago
B
Retailer 16
-
£529 GBP
$708 USD
View
B
Retailer 17
-
£713 GBP
View
Most Expensive
B
Reve Diamonds
443F7CADA · Oct 30
£805 GBP
$1,078 USD
View
17 more retailers have this diamond
Prices start from £122 GBPSave up to £682 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
£122 GBP