Radiant|Lab Grown|IGI

5.99ct I VS1 Radiant Lab Grown Diamond

ID • I/VS1 • IGI LG826673856

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG826673856

Diamond specifications and retailer prices

From $1,154 USD
£909 GBP
As of October 27, 2026
Save $2,781 USD (71%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,935 USD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 5.99ct lab-grown radiant diamond

This 5.99ct lab-grown radiant sits in the over five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG826673856 or 826673856. Listed at 18 retailers as of October 27, 2026, with prices from $1,154 to $3,935, a $2,781 spread on the same certified stone. Rare Carat lists it at $3,935. 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

5.99
Carat
I
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.6°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG826673856
Dimensions12.97 × 8.67 × 5.79 mm
L/W Ratio1.50
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.97 mm8.67 mm5.99 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG826673856
Side View
Table 66.0%Crown 47.6°Girdle: MED-STKPavilion 32.1°Culet: NoneDepth 66.8%

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: Oct 27
Current: $3,935 USD|Low: $993 USD|High: $6,600 USD|Avg: $2,654 USD|-1.0%
Rare Carat
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
Retailer 15
October 31, 2026
Retailer 3$993 USD
Retailer 10$1,154 USD
Retailer 5$1,190 USD
Retailer 15$1,205 USD
Retailer 2$1,562 USD
Retailer 14$1,653 USD
Retailer 11$2,071 USD
Retailer 13$2,086 USD
Retailer 6$2,835 USD
Retailer 8$3,095 USD
Retailer 4$3,454 USD
Retailer 9$3,490 USD
Retailer 7$3,572 USD
Retailer 12$3,877 USD
Rare Carat$3,935 USD

34 data points across 15 retailers

18 retailers$1,154 USD to $3,935 USD

Retailer 1
-
$887 USD
Price last confirmed 16 days ago
Retailer 2
-
$965 USD
View
Price last confirmed 19 days ago
Retailer 3
-
$1,029 USD
View
Price last confirmed 29 days ago
A
Retailer 4
-
$1,154 USD
£909 GBP
View
A
Retailer 5
-
$1,190 USD
HK$9,300 HKD
View
Retailer 6
-
$1,205 USD
View
Price last confirmed 5 days ago
A
Retailer 7
-
$1,562 USD
€1,488 EUR
View
B+
Retailer 8
-
$1,653 USD
View
Retailer 9
-
$2,071 USD
ZAR 33,453 ZAR
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$2,086 USD
View
Retailer 11
-
$2,835 USD
£2,232 GBP
View
Price last confirmed 17 days ago
Retailer 12
-
$2,893 USD
View
Price last confirmed 16 days ago
B
Retailer 13
-
$3,095 USD
View
B
Retailer 14
-
$3,454 USD
SGD 4,668 SGD
View
B
Retailer 15
-
$3,490 USD
View
Retailer 16
-
$3,572 USD
View
Price last confirmed 7 days ago
Retailer 17
-
$3,877 USD
£3,053 GBP
View
Price last confirmed 11 days ago
Most Expensive
B
Rare Carat
163784-BB · Oct 28
$3,935 USD
View
17 more retailers have this diamond
Prices start from $1,154 USDSave up to $2,781 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
5.99ct Radiant
$1,154 USD