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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 $986 USD
HK$7,700 HKD
As of November 1, 2026
Save $2,682 USD (73%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,030 USD 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
Color
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 1
Current: $4,030 USD|Low: $986 USD|High: $4,170 USD|Avg: $2,462 USD|-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$986 USD
Retailer 9$1,233 USD
Retailer 5$1,321 USD
Retailer 2$1,350 USD
Retailer 10$1,364 USD
Retailer 11$2,114 USD
Retailer 3$2,900 USD
Retailer 8$3,032 USD
Retailer 4$3,303 USD
Retailer 6$3,668 USD
Rare Carat$4,030 USD

41 data points across 11 retailers

11 retailers$986 USD to $3,668 USD

A
Cheapest Retailer
-
$986 USD
HK$7,700 HKD
A
Retailer 2
-
$1,233 USD
View
A
Retailer 3
-
$1,321 USD
€1,258 EUR
View
A
Retailer 4
-
$1,350 USD
£1,063 GBP
View
B+
Retailer 5
-
$1,364 USD
View
A
Retailer 6
-
$2,114 USD
View
B+
Retailer 7
-
$2,900 USD
View
B+
Retailer 8
-
$3,032 USD
View
B+
Retailer 9
-
$3,303 USD
£2,601 GBP
View
B
Retailer 10
-
$3,668 USD
A$5,643 AUD
View
Most Expensive
Rare Carat
KI1816711KF823 · Oct 19
$4,030 USD
View
Price last confirmed 15 days ago
10 more retailers have this diamond
Prices start from $986 USDSave up to $2,682 USD

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
$986 USD