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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 $3,974 NZD
$2,240 USD
As of October 31, 2026
Save $2,811 NZD (41%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,984 NZD 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $9,984 NZD|Low: $3,974 NZD|High: $14,735 NZD|Avg: $8,254 NZD|+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$3,974 NZD
Retailer 12$4,682 NZD
Retailer 5$5,094 NZD
Retailer 6$5,431 NZD
Retailer 13$5,431 NZD
Retailer 9$6,785 NZD
Retailer 2$7,274 NZD
Retailer 4$7,464 NZD
Retailer 11$7,968 NZD
Retailer 3$8,456 NZD
Cape Diamonds$9,984 NZD
Retailer 8$13,521 NZD
Retailer 14$14,501 NZD
Retailer 7$14,541 NZD

41 data points across 14 retailers

18 retailers$3,974 NZD to $6,785 NZD

B
Cheapest Retailer
-
$3,974 NZD
$2,240 USD
B
Retailer 2
-
$4,682 NZD
$2,639 USD
View
B
Retailer 3
-
$5,094 NZD
$2,871 USD
View
B
Retailer 4
-
$5,241 NZD
$2,954 USD
View
Final sale: no returns
Retailer 5
-
$5,431 NZD
$3,061 USD
View
Price last confirmed 20 days ago
B
Retailer 6
-
$5,431 NZD
$3,061 USD
View
B
Retailer 7
-
$5,722 NZD
$3,225 USD
View
B
Retailer 8
-
$6,785 NZD
£3,011 GBP
View
Retailer 9
-
$7,274 NZD
£3,228 GBP
View
Price under review
Retailer 10
-
$7,464 NZD
$4,207 USD
View
Price under review
Retailer 11
-
$7,968 NZD
$4,491 USD
View
Price under review
Retailer 12
-
$8,456 NZD
$4,766 USD
View
Price under review
Most Expensive
Cape Diamonds
cert_506191278 · Oct 29
$9,984 NZD
ZAR 90,906 ZAR
View
Price under review
12 more retailers have this diamond
Prices start from $3,974 NZDSave up to $2,811 NZD

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
$3,974 NZD