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Cushion|Lab Grown|IGI

4.99ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG823671181

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG823671181

Diamond specifications and retailer prices

From £734 GBP
HK$7,700 HKD
As of November 3, 2026
Save £1,999 GBP (73%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,003 GBP at Rare Carat · As of October 19, 2026
View at Rare Carat

About this 4.99ct lab-grown cushion diamond

This 4.99ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG823671181 or 823671181. Listed at 11 retailers as of October 31, 2026, with a 272% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.99
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823671181
Dimensions12.21 × 8.80 × 5.75 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.21 mm8.80 mm4.99 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823671181
Side View
Table 71.0%Crown 34.9°Girdle: STK-THKPavilion 36.4°Culet: NoneDepth 65.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: £3,003 GBP|Low: £734 GBP|High: £3,107 GBP|Avg: £1,835 GBP|-3.4%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 7£734 GBP
Retailer 9£919 GBP
Retailer 5£984 GBP
Retailer 2£1,006 GBP
Retailer 10£1,016 GBP
Retailer 11£1,575 GBP
Retailer 3£2,161 GBP
Retailer 8£2,259 GBP
Retailer 4£2,462 GBP
Retailer 6£2,733 GBP
Rare Carat£3,003 GBP

41 data points across 11 retailers

11 retailers£734 GBP to £2,733 GBP

A
Cheapest Retailer
-
£734 GBP
HK$7,700 HKD
A
Retailer 2
-
£919 GBP
$1,233 USD
View
A
Retailer 3
-
£984 GBP
€1,258 EUR
View
A
Retailer 4
-
£1,006 GBP
View
B+
Retailer 5
-
£1,016 GBP
$1,364 USD
View
A
Retailer 6
-
£1,575 GBP
$2,114 USD
View
B+
Retailer 7
-
£2,161 GBP
$2,900 USD
View
B+
Retailer 8
-
£2,259 GBP
$3,032 USD
View
B+
Retailer 9
-
£2,462 GBP
View
B
Retailer 10
-
£2,733 GBP
A$5,643 AUD
View
Most Expensive
Rare Carat
KI1816711KF823 · Oct 19
£3,003 GBP
$4,030 USD
View
Price last confirmed 15 days ago
10 more retailers have this diamond
Prices start from £734 GBPSave up to £1,999 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
4.99ct Cushion
£734 GBP