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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 $3,189 AUD
$2,240 USD
As of October 31, 2026
Save $2,255 AUD (41%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,011 AUD 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 31, 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
Colour
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $8,011 AUD|Low: $3,189 AUD|High: $11,822 AUD|Avg: $6,623 AUD|+1.9%
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
November 2, 2026
Retailer 10$3,189 AUD
Retailer 12$3,757 AUD
Retailer 5$4,087 AUD
Retailer 6$4,358 AUD
Retailer 13$4,358 AUD
Retailer 9$5,444 AUD
Retailer 2$5,836 AUD
Retailer 4$5,989 AUD
Retailer 11$6,393 AUD
Retailer 3$6,785 AUD
Cape Diamonds$8,011 AUD
Retailer 8$10,849 AUD
Retailer 14$11,635 AUD
Retailer 7$11,667 AUD

41 data points across 14 retailers

18 retailers$3,189 AUD to $5,444 AUD

B
Cheapest Retailer
-
$3,189 AUD
$2,240 USD
B
Retailer 2
-
$3,757 AUD
$2,639 USD
View
B
Retailer 3
-
$4,087 AUD
$2,871 USD
View
B
Retailer 4
-
$4,205 AUD
$2,954 USD
View
Final sale: no returns
Retailer 5
-
$4,358 AUD
$3,061 USD
View
Price last confirmed 20 days ago
B
Retailer 6
-
$4,358 AUD
$3,061 USD
View
B
Retailer 7
-
$4,591 AUD
$3,225 USD
View
B
Retailer 8
-
$5,444 AUD
£3,011 GBP
View
Retailer 9
-
$5,836 AUD
£3,228 GBP
View
Price under review
Retailer 10
-
$5,989 AUD
$4,207 USD
View
Price under review
Retailer 11
-
$6,393 AUD
$4,491 USD
View
Price under review
Retailer 12
-
$6,785 AUD
$4,766 USD
View
Price under review
Most Expensive
Cape Diamonds
cert_506191278 · Oct 29
$8,011 AUD
ZAR 90,906 ZAR
View
Price under review
12 more retailers have this diamond
Prices start from $3,189 AUDSave up to $2,255 AUD

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
$3,189 AUD