Radiant|Lab Grown|IGI

1.86ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG506191278

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

Certificate IGI LG506191278

Diamond specifications and retailer prices

From $2,240 USD
As of October 29, 2026
Save $1,596 USD (42%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,627 USD at Cape Diamonds · As of October 29, 2026
View at Cape Diamonds

About this 1.86ct lab-grown radiant diamond

This 1.86ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG506191278 or 506191278. Listed at 18 retailers as of October 29, 2026, with a 71% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.86
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.7°
Pavilion angle31.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG506191278
Dimensions8.05 × 6.07 × 4.29 mm
L/W Ratio1.33
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.05 mm6.07 mm1.86 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG506191278
Side View
Table 66.0%Crown 45.7°Girdle: STK-THKPavilion 31.3°Culet: NoneDepth 70.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $5,627 USD|Low: $2,240 USD|High: $8,305 USD|Avg: $4,545 USD|+2.4%
Cape Diamonds
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 30, 2026
Retailer 11$2,240 USD
Retailer 13$2,639 USD
Retailer 5$2,871 USD
Retailer 7$2,954 USD
Retailer 6$3,061 USD
Retailer 14$3,061 USD
Retailer 2$3,836 USD
Retailer 8$4,134 USD
Retailer 4$4,207 USD
Retailer 12$4,491 USD
Retailer 3$4,766 USD
Cape Diamonds$5,627 USD
Retailer 10$7,634 USD
Retailer 15$8,173 USD
Retailer 9$8,240 USD

41 data points across 15 retailers

18 retailers$2,240 USD to $3,836 USD

B
Cheapest Retailer
-
$2,240 USD
B
Retailer 2
-
$2,639 USD
View
B
Retailer 3
-
$2,871 USD
View
B
Retailer 4
-
$2,954 USD
View
Final sale: no returns
Retailer 5
-
$3,061 USD
View
Price last confirmed 18 days ago
B
Retailer 6
-
$3,061 USD
View
B
Retailer 7
-
$3,225 USD
View
B
Retailer 8
-
$3,836 USD
£3,020 GBP
View
Retailer 9
-
$4,134 USD
£3,255 GBP
View
Price under review
Retailer 10
-
$4,207 USD
View
Price under review
Retailer 11
-
$4,491 USD
View
Price under review
Retailer 12
-
$4,766 USD
View
Price under review
Most Expensive
Cape Diamonds
cert_506191278 · Oct 29
$5,627 USD
ZAR 90,906 ZAR
View
Price under review
12 more retailers have this diamond
Prices start from $2,240 USDSave up to $1,596 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.

B
1.86ct Radiant
$2,240 USD