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Radiant|Lab Grown|IGI

1.21ct D VVS1 Radiant Lab Grown Diamond

GD • D/VVS1 • IGI LG623420555

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

Certificate IGI LG623420555

Diamond specifications and retailer prices

From $367 NZD
As of November 4, 2026
Save $3,163 NZD (90%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,530 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 D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a standard cut grade and certified by IGI LG623420555 or 623420555. Listed at 21 retailers as of November 4, 2026, with prices from $367 to $3,530, a $3,163 spread on the same certified stone. Do Amore Diamonds lists it at $3,530. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
D
Colour
VVS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623420555
Dimensions7.65 × 5.23 × 3.55 mm
L/W Ratio1.46
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
7.65 mm5.23 mm1.21 ctD / VVS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623420555
Side View
Table 64.0%Crown 41.9°Girdle: MediumPavilion 37.7°Culet: NoneDepth 67.9%

Caratlytics Score

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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: $931 NZD|Low: $353 NZD|High: $3,406 NZD|Avg: $1,173 NZD|+3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 5, 2026
Retailer 4$367 NZD
Retailer 14$410 NZD
Retailer 3$428 NZD
Retailer 2$456 NZD
Retailer 17$456 NZD
Retailer 7$614 NZD
Retailer 9$729 NZD
Retailer 11$869 NZD
Retailer 1$931 NZD
Retailer 10$1,231 NZD
Retailer 16$1,472 NZD
Retailer 5$1,620 NZD
Retailer 6$1,685 NZD
Retailer 15$1,898 NZD
Retailer 8$1,973 NZD
Retailer 12$2,017 NZD
Retailer 13$3,335 NZD

45 data points across 17 retailers

21 retailers$367 NZD to $3,530 NZD

A
Cheapest Retailer
-
$367 NZD
A
Retailer 2
-
$410 NZD
View
Final sale: no returns
A
Retailer 3
-
$428 NZD
View
Retailer 4
-
$456 NZD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$456 NZD
View
B+
Retailer 6
-
$614 NZD
View
B+
Retailer 7
-
$729 NZD
View
B+
Retailer 8
-
$807 NZD
View
B+
Retailer 9
-
$869 NZD
View
B+
Retailer 10
-
$931 NZD
View
B+
Retailer 11
-
$1,231 NZD
View
B
Retailer 12
-
$1,472 NZD
View
B
Retailer 13
-
$1,620 NZD
View
Retailer 14
-
$1,685 NZD
View
Price last confirmed 28 days ago
Retailer 15
-
$1,898 NZD
View
Price last confirmed 18 days ago
B
Retailer 16
-
$1,923 NZD
View
B
Retailer 17
-
$1,973 NZD
View
B
Retailer 18
-
$2,017 NZD
View
B
Retailer 19
-
$2,159 NZD
View
B
Retailer 20
-
$3,335 NZD
View
Most Expensive
B
Do Amore Diamonds
27-EBF7213F3 · Nov 4
$3,530 NZD
$1,990 USD
View
20 more retailers have this diamond
Prices start from $367 NZDSave up to $3,163 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
$367 NZD