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Radiant|Lab Grown|IGI

1.21ct D VVS1 Radiant Lab Grown Diamond

EX • D/VVS1 • IGI LG731566581

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

Certificate IGI LG731566581

Diamond specifications and retailer prices

From $357 NZD
As of November 4, 2026
Save $1,825 NZD (84%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: $2,182 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 top-tier cut grade and certified by IGI LG731566581 or 731566581. Listed at 29 retailers as of November 4, 2026, with prices from $357 to $2,182, a $1,825 spread on the same certified stone. Brilliant Earth lists it at $2,182. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.5°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731566581
Dimensions5.18 × 5.18 × 3.41 mm
L/W Ratio1.00
Culet sizePointed
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
5.18 mm5.18 mm1.21 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731566581
Side View
Table 64.0%Crown 43.5°Girdle: Slightly ThickPavilion 34.2°Culet: NoneDepth 65.8%

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: $2,182 NZD|Low: $357 NZD|High: $2,448 NZD|Avg: $1,179 NZD|-10.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 12$357 NZD
Retailer 6$397 NZD
Retailer 3$624 NZD
Retailer 9$750 NZD
Retailer 8$761 NZD
Retailer 2$802 NZD
Retailer 7$1,077 NZD
Retailer 11$1,425 NZD
Retailer 4$1,660 NZD
Retailer 10$1,898 NZD
Retailer 5$2,058 NZD
Brilliant Earth$2,182 NZD

43 data points across 12 retailers

29 retailers$357 NZD to $2,182 NZD

A
Cheapest Retailer
-
$357 NZD
Retailer 2
-
$357 NZD
View
Price last confirmed 28 days ago
Retailer 3
-
$357 NZD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$397 NZD
View
Final sale: no returns
Retailer 5
-
$413 NZD
View
Price last confirmed 39 days ago
Retailer 6
-
$436 NZD
View
Price last confirmed 37 days ago
Retailer 7
-
$442 NZD
View
Price last confirmed 33 days ago
A
Retailer 8
-
$522 NZD
View
B+
Retailer 9
-
$624 NZD
View
A
Retailer 10
-
$750 NZD
View
A
Retailer 11
-
$761 NZD
View
Retailer 12
-
$789 NZD
View
Price last confirmed 21 days ago
A
Retailer 13
-
$802 NZD
View
A
Retailer 14
-
$875 NZD
View
A
Retailer 15
-
$944 NZD
View
B+
Retailer 16
-
$1,029 NZD
View
B+
Retailer 17
-
$1,077 NZD
View
B+
Retailer 18
-
$1,421 NZD
View
Retailer 19
-
$1,421 NZD
View
Price last confirmed 36 days ago
Retailer 20
-
$1,421 NZD
View
Price last confirmed 26 days ago
B+
Retailer 21
-
$1,425 NZD
View
B+
Retailer 22
-
$1,504 NZD
View
B+
Retailer 23
-
$1,515 NZD
View
B
Retailer 24
-
$1,584 NZD
View
Retailer 25
-
$1,660 NZD
View
Price last confirmed 31 days ago
Retailer 26
-
$1,898 NZD
View
Price last confirmed 18 days ago
B
Retailer 27
-
$2,058 NZD
View
B
Retailer 28
-
$2,122 NZD
View
Most Expensive
B
Brilliant Earth
15998864A · Nov 4
$2,182 NZD
$1,230 USD
View
28 more retailers have this diamond
Prices start from $357 NZDSave up to $1,825 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
$357 NZD