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Radiant|Lab Grown|IGI

1.28ct D VVS1 Radiant Lab Grown Diamond

ID • D/VVS1 • IGI LG828688726

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

Certificate IGI LG828688726

Diamond specifications and retailer prices

From $387 NZD
As of November 4, 2026
Save $2,771 NZD (88%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,158 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 LG828688726 or 828688726. Listed at 18 retailers as of November 4, 2026, with prices from $387 to $3,158, a $2,771 spread on the same certified stone. Brilliant Earth lists it at $3,158. 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 angle47°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828688726
Dimensions7.54 × 5.37 × 3.58 mm
L/W Ratio1.40
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.54 mm5.37 mm1.28 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828688726
Side View
Table 65.0%Crown 47°Girdle: STK-THKPavilion 35.5°Culet: NoneDepth 66.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $3,158 NZD|Low: $387 NZD|High: $3,530 NZD|Avg: $1,269 NZD|-10.6%
Brilliant Earth
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 12$387 NZD
Retailer 15$399 NZD
Retailer 11$486 NZD
Retailer 13$577 NZD
Retailer 5$740 NZD
Retailer 10$772 NZD
Retailer 3$786 NZD
Retailer 8$1,002 NZD
Retailer 4$1,047 NZD
Retailer 7$1,128 NZD
Retailer 16$1,378 NZD
Retailer 2$1,382 NZD
Retailer 14$1,440 NZD
Retailer 17$1,467 NZD
Retailer 9$1,907 NZD
Retailer 6$2,006 NZD
Brilliant Earth$3,158 NZD

23 data points across 17 retailers

18 retailers$387 NZD to $3,158 NZD

A
Cheapest Retailer
-
$387 NZD
Final sale: no returns
A
Retailer 2
-
$399 NZD
View
A
Retailer 3
-
$486 NZD
View
B+
Retailer 4
-
$577 NZD
View
A
Retailer 5
-
$740 NZD
View
A
Retailer 6
-
$772 NZD
View
A
Retailer 7
-
$786 NZD
View
A
Retailer 8
-
$1,002 NZD
View
B+
Retailer 9
-
$1,047 NZD
View
B+
Retailer 10
-
$1,128 NZD
View
B+
Retailer 11
-
$1,378 NZD
View
B+
Retailer 12
-
$1,382 NZD
View
B+
Retailer 13
-
$1,440 NZD
View
B+
Retailer 14
-
$1,467 NZD
View
Retailer 15
-
$1,724 NZD
View
Price last confirmed 28 days ago
Retailer 16
-
$1,907 NZD
View
Price last confirmed 18 days ago
B+
Retailer 17
-
$2,006 NZD
View
Most Expensive
B
Brilliant Earth
21325021A · Nov 4
$3,158 NZD
$1,780 USD
View
17 more retailers have this diamond
Prices start from $387 NZDSave up to $2,771 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
$387 NZD