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Radiant|Lab Grown|IGI

1.21ct I VS1 Radiant Lab Grown Diamond

ID • I/VS1 • IGI LG620444528

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

Certificate IGI LG620444528

Diamond specifications and retailer prices

From $362 NZD
As of November 4, 2026
Save $3,115 NZD (90%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,477 NZD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG620444528 or 620444528. Listed at 13 retailers as of November 4, 2026, with prices from $362 to $3,477, a $3,115 spread on the same certified stone. Do Amore Diamonds lists it at $3,477. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620444528
Dimensions7.12 × 5.33 × 3.67 mm
L/W Ratio1.34
Culet sizePointed
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
7.12 mm5.33 mm1.21 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620444528
Side View
Table 63.0%Crown 45.5°Girdle: MED-STKPavilion 35.2°Culet: NoneDepth 68.9%

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: Nov 4
Current: $855 NZD|Low: $348 NZD|High: $1,946 NZD|Avg: $960 NZD|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 6$362 NZD
Retailer 3$404 NZD
Retailer 10$420 NZD
Retailer 7$449 NZD
Retailer 11$449 NZD
Retailer 4$584 NZD
Retailer 1$855 NZD
Retailer 2$1,015 NZD
Retailer 5$1,242 NZD
Retailer 9$1,531 NZD
Retailer 8$1,593 NZD
Retailer 12$1,946 NZD

22 data points across 12 retailers

13 retailers$362 NZD to $3,477 NZD

A
Cheapest Retailer
-
$362 NZD
A
Retailer 2
-
$404 NZD
View
Final sale: no returns
A
Retailer 3
-
$420 NZD
View
A
Retailer 4
-
$449 NZD
View
Retailer 5
-
$449 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$584 NZD
View
A
Retailer 7
-
$855 NZD
View
B+
Retailer 8
-
$1,015 NZD
View
B+
Retailer 9
-
$1,242 NZD
View
B
Retailer 10
-
$1,531 NZD
View
B
Retailer 11
-
$1,593 NZD
View
B
Retailer 12
-
$1,946 NZD
View
Most Expensive
B
Do Amore Diamonds
27-ED7D7C1DD · Nov 4
$3,477 NZD
$1,960 USD
View
12 more retailers have this diamond
Prices start from $362 NZDSave up to $3,115 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
1.21ct Radiant
$362 NZD