Cushion|Lab Grown|IGI

0.99ct F VVS2 Cushion Lab Grown Diamond

GD • F/VVS2 • IGI LG646486634

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG646486634

Diamond specifications and retailer prices

From £403 GBP
$540 USD
As of November 1, 2026
Save £7 GBP (2%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £410 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 0.99ct lab-grown cushion diamond

This 0.99ct lab-grown cushion sits in the just-under-one-carat band, graded F colour (colourless) and VVS2 clarity (very-very-slightly-included), with a standard cut grade and certified by IGI LG646486634 or 646486634. Listed at 3 retailers as of November 1, 2026, with a relatively tight 2% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
F
Colour
VVS2
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG646486634
Dimensions5.80 × 5.61 × 3.83 mm
L/W Ratio1.03
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.80 mm5.61 mm0.99 ctF / VVS2
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG646486634
Side View
Table 61.0%Crown 36.4°Girdle: MED-THKPavilion 40°Culet: NoneDepth 68.3%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £403 GBP|Low: £139 GBP|High: £769 GBP|Avg: £405 GBP|-2.7%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 19, 2026
Retailer 5£139 GBP
Retailer 8£224 GBP
Retailer 4£261 GBP
Retailer 6£283 GBP
Retailer 3£352 GBP
Retailer 9£358 GBP
Rare Carat£403 GBP
Retailer 7£605 GBP
Retailer 2£649 GBP
Retailer 10£769 GBP

3 data points across 10 retailers

3 retailers£403 GBP to £410 GBP

Retailer 1
-
£390 GBP
$523 USD
Price last confirmed 74 days ago
B+
Retailer 2
-
£403 GBP
$540 USD
View
Most Expensive
B
Rare Carat
A37229_l_689561858 · Nov 1
£410 GBP
$550 USD
View
2 more retailers have this diamond
Prices start from £403 GBPSave up to £7 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.

B+
0.99ct Cushion
£403 GBP