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Radiant|Lab Grown|IGI

1.28ct D VVS1 Radiant Lab Grown Diamond

ID • D/VVS1 • IGI LG841629550

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

Certificate IGI LG841629550

Diamond specifications and retailer prices

From $335 NZD
As of November 4, 2026
Save $1,605 NZD (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,172 NZD at Helzberg Diamonds · As of October 13, 2026
View at Helzberg Diamonds

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG841629550 or 841629550. Listed at 21 retailers as of November 4, 2026, with a 479% 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

1.28
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.2°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841629550
Dimensions7.75 × 5.13 × 3.56 mm
L/W Ratio1.51
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.75 mm5.13 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841629550
Side View
Table 66.0%Crown 46.2°Girdle: STK-THKPavilion 33.8°Culet: NoneDepth 69.4%

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: $749 NZD|Low: $335 NZD|High: $1,998 NZD|Avg: $925 NZD|-1.9%
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
Retailer 19
November 5, 2026
Retailer 6$335 NZD
Retailer 17$376 NZD
Retailer 16$390 NZD
Retailer 18$417 NZD
Retailer 10$422 NZD
Retailer 13$474 NZD
Retailer 15$564 NZD
Retailer 4$687 NZD
Retailer 8$722 NZD
Retailer 1$749 NZD
Retailer 9$993 NZD
Retailer 5$1,015 NZD
Retailer 11$1,126 NZD
Retailer 14$1,339 NZD
Retailer 3$1,345 NZD
Retailer 7$1,361 NZD
Retailer 2$1,400 NZD
Retailer 19$1,433 NZD
Retailer 12$1,941 NZD

18 data points across 19 retailers

21 retailers$335 NZD to $1,941 NZD

A
Cheapest Retailer
-
$335 NZD
A
Retailer 2
-
$376 NZD
View
Final sale: no returns
A
Retailer 3
-
$390 NZD
View
A
Retailer 4
-
$417 NZD
View
Retailer 5
-
$422 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$474 NZD
View
B+
Retailer 7
-
$564 NZD
View
A
Retailer 8
-
$687 NZD
View
A
Retailer 9
-
$722 NZD
View
A
Retailer 10
-
$749 NZD
View
A
Retailer 11
-
$993 NZD
View
A
Retailer 12
-
$1,015 NZD
View
B+
Retailer 13
-
$1,126 NZD
View
B+
Retailer 14
-
$1,339 NZD
View
B+
Retailer 15
-
$1,345 NZD
View
B+
Retailer 16
-
$1,361 NZD
View
B+
Retailer 17
-
$1,400 NZD
View
B+
Retailer 18
-
$1,433 NZD
View
Retailer 19
-
$1,907 NZD
View
Price last confirmed 18 days ago
B+
Retailer 20
-
$1,941 NZD
View
Most Expensive
Helzberg Diamonds
ZXZOKHMIPLLG · Oct 13
$3,172 NZD
$1,788 USD
View
Price last confirmed 23 days ago
20 more retailers have this diamond
Prices start from $335 NZDSave up to $1,605 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
1.28ct Radiant
$335 NZD