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Radiant|Lab Grown|IGI

1.28ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG591309411

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

Certificate IGI LG591309411

Diamond specifications and retailer prices

From $425 NZD
As of November 4, 2026
Save $3,239 NZD (88%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,665 NZD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG591309411 or 591309411. Listed at 12 retailers as of November 4, 2026, with prices from $425 to $3,665, a $3,239 spread on the same certified stone. Do Amore Diamonds lists it at $3,665. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591309411
Dimensions7.82 × 5.35 × 3.62 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
7.82 mm5.35 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591309411
Side View
Table 66.0%Crown 42°Girdle: MediumPavilion 35.5°Culet: NoneDepth 67.7%

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: $3,665 NZD|Low: $283 NZD|High: $3,665 NZD|Avg: $1,538 NZD
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
November 5, 2026
Retailer 6$283 NZD
Retailer 12$425 NZD
Retailer 4$713 NZD
Retailer 10$809 NZD
Retailer 2$977 NZD
Retailer 11$1,042 NZD
Retailer 7$1,277 NZD
Retailer 9$1,525 NZD
Retailer 13$1,896 NZD
Retailer 14$1,980 NZD
Retailer 8$2,088 NZD
Retailer 3$2,202 NZD
Retailer 5$2,597 NZD
Do Amore Diamonds$3,665 NZD

32 data points across 14 retailers

12 retailers$425 NZD to $3,665 NZD

A
Cheapest Retailer
-
$425 NZD
Final sale: no returns
Retailer 2
-
$466 NZD
View
Price last confirmed 42 days ago
A
Retailer 3
-
$713 NZD
View
A
Retailer 4
-
$809 NZD
View
B+
Retailer 5
-
$977 NZD
View
B+
Retailer 6
-
$1,042 NZD
View
B+
Retailer 7
-
$1,277 NZD
View
B
Retailer 8
-
$1,525 NZD
View
B
Retailer 9
-
$1,980 NZD
View
B
Retailer 10
-
$2,088 NZD
View
B
Retailer 11
-
$2,202 NZD
View
Most Expensive
B
Do Amore Diamonds
27-4751BC99F · Nov 4
$3,665 NZD
$2,060 USD
View
11 more retailers have this diamond
Prices start from $425 NZDSave up to $3,239 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
$425 NZD