Radiant|Lab Grown|IGI

1.00ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG821643185

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

Certificate IGI LG821643185

Diamond specifications and retailer prices

From $631 NZD
£279 GBP
As of October 26, 2026
Save $1,089 NZD (63%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,183 NZD at Queensmith · As of October 25, 2026
View at Queensmith

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG821643185 or 821643185. Listed at 21 retailers as of October 26, 2026, with a 173% 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

1.00
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821643185
Dimensions7.04 × 4.93 × 3.36 mm
L/W Ratio1.43
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.04 mm4.93 mm1.00 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821643185
Side View
Table 66.0%Crown 40.5°Girdle: MED-STKPavilion 37.7°Culet: NoneDepth 68.2%

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: Oct 26
Current: $895 NZD|Low: $284 NZD|High: $1,932 NZD|Avg: $829 NZD|-0.9%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
October 26, 2026
Retailer 4$297 NZD
Retailer 2$331 NZD
Retailer 8$343 NZD
Retailer 6$368 NZD
Retailer 9$368 NZD
Retailer 17$493 NZD
Retailer 16$612 NZD
Retailer 14$621 NZD
Retailer 11$631 NZD
Retailer 1$895 NZD
Retailer 10$930 NZD
Retailer 18$967 NZD
Retailer 15$995 NZD
Retailer 13$1,055 NZD
Retailer 7$1,180 NZD
Retailer 5$1,528 NZD
Retailer 12$1,720 NZD
Retailer 3$1,932 NZD

38 data points across 18 retailers

21 retailers$631 NZD to $1,720 NZD

Retailer 1
-
$297 NZD
$167 USD
Price last confirmed 10 days ago
Retailer 2
-
$343 NZD
$193 USD
View
Price last confirmed 9 days ago
Retailer 3
-
$368 NZD
$207 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$368 NZD
$207 USD
View
Price last confirmed 7 days ago
Retailer 5
-
$493 NZD
£218 GBP
View
Price last confirmed 16 days ago
Retailer 6
-
$498 NZD
$280 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$592 NZD
$333 USD
View
Price last confirmed 7 days ago
Retailer 8
-
$612 NZD
€328 EUR
View
Price last confirmed 9 days ago
Retailer 9
-
$621 NZD
ZAR 5,642 ZAR
View
Price last confirmed 10 days ago
A
Retailer 10
-
$631 NZD
£279 GBP
View
B+
Retailer 11
-
$895 NZD
A$775 AUD
View
B+
Retailer 12
-
$930 NZD
$523 USD
View
B+
Retailer 13
-
$967 NZD
$544 USD
View
B+
Retailer 14
-
$995 NZD
$560 USD
View
Retailer 15
-
$1,055 NZD
A$913 AUD
View
Price last confirmed 8 days ago
Retailer 16
-
$1,180 NZD
$664 USD
View
Price last confirmed 8 days ago
B
Retailer 17
-
$1,278 NZD
$719 USD
View
Price last confirmed 7 days ago
B
Retailer 18
-
$1,528 NZD
$860 USD
View
B
Retailer 19
-
$1,720 NZD
£762 GBP
View
Retailer 20
-
$1,932 NZD
$1,087 USD
View
Price last confirmed 8 days ago
Most Expensive
Queensmith
LG821643185 · Oct 25
$3,183 NZD
£1,410 GBP
View
Price under review
20 more retailers have this diamond
Prices start from $631 NZDSave up to $1,089 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.

A
1.00ct Radiant
$631 NZD