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Radiant|Lab Grown|IGI

1.21ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG512237789

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

Certificate IGI LG512237789

Diamond specifications and retailer prices

From $397 NZD
As of November 5, 2026
Save $2,859 NZD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,255 NZD at Do Amore Diamonds · As of November 5, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG512237789 or 512237789. Listed at 19 retailers as of November 5, 2026, with prices from $397 to $3,255, a $2,859 spread on the same certified stone. Do Amore Diamonds lists it at $3,255. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512237789
Dimensions7.90 × 5.18 × 3.55 mm
L/W Ratio1.53
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
7.90 mm5.18 mm1.21 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512237789
Side View
Table 65.5%Crown 38.5°Girdle: MediumPavilion 37°Culet: NoneDepth 68.5%

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 5
Current: $3,255 NZD|Low: $326 NZD|High: $3,398 NZD|Avg: $1,250 NZD|+15.8%
Do Amore 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
November 5, 2026
Retailer 8$397 NZD
Retailer 5$439 NZD
Retailer 15$567 NZD
Retailer 2$578 NZD
Retailer 14$626 NZD
Retailer 12$802 NZD
Retailer 11$1,042 NZD
Retailer 10$1,135 NZD
Retailer 6$1,318 NZD
Retailer 4$1,558 NZD
Retailer 13$1,800 NZD
Retailer 9$1,855 NZD
Retailer 7$1,925 NZD
Retailer 3$1,934 NZD
Do Amore Diamonds$3,255 NZD

35 data points across 15 retailers

19 retailers$397 NZD to $3,255 NZD

Retailer 1
-
$292 NZD
Price last confirmed 17 days ago
Retailer 2
-
$340 NZD
View
Price last confirmed 22 days ago
Retailer 3
-
$363 NZD
View
Price last confirmed 20 days ago
A
Retailer 4
-
$397 NZD
View
Final sale: no returns
Retailer 5
-
$439 NZD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$567 NZD
View
A
Retailer 7
-
$578 NZD
View
A
Retailer 8
-
$626 NZD
View
A
Retailer 9
-
$802 NZD
View
B+
Retailer 10
-
$1,042 NZD
View
B+
Retailer 11
-
$1,135 NZD
View
B+
Retailer 12
-
$1,197 NZD
View
B+
Retailer 13
-
$1,318 NZD
View
Retailer 14
-
$1,558 NZD
View
Price last confirmed 16 days ago
B
Retailer 15
-
$1,800 NZD
View
B
Retailer 16
-
$1,855 NZD
View
Retailer 17
-
$1,925 NZD
View
Price last confirmed 18 days ago
B
Retailer 18
-
$1,934 NZD
View
Most Expensive
B
Do Amore Diamonds
27-8142D3453 · Nov 5
$3,255 NZD
$1,830 USD
View
18 more retailers have this diamond
Prices start from $397 NZDSave up to $2,859 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
$397 NZD