CaratHunter
Plans
Radiant|Lab Grown|IGI

1.28ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG751511613

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

Certificate IGI LG751511613

Diamond specifications and retailer prices

From $363 NZD
As of November 4, 2026
Save $1,861 NZD (84%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,224 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG751511613 or 751511613. Listed at 20 retailers as of November 4, 2026, with prices from $363 to $2,224, a $1,861 spread on the same certified stone. Brilliant Earth lists it at $2,224. 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 angle42.1°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG751511613
Dimensions7.85 × 5.29 × 3.62 mm
L/W Ratio1.48
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.85 mm5.29 mm1.28 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG751511613
Side View
Table 64.0%Crown 42.1°Girdle: MediumPavilion 35.2°Culet: NoneDepth 68.4%

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: $2,224 NZD|Low: $359 NZD|High: $2,241 NZD|Avg: $1,061 NZD|-0.8%
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
Retailer 18
Retailer 19
Retailer 20
November 5, 2026
Retailer 18$363 NZD
Retailer 14$406 NZD
Retailer 6$420 NZD
Retailer 10$445 NZD
Retailer 15$450 NZD
Retailer 2$596 NZD
Retailer 8$768 NZD
Retailer 9$768 NZD
Retailer 5$777 NZD
Retailer 16$818 NZD
Retailer 13$911 NZD
Retailer 11$1,019 NZD
Retailer 7$1,085 NZD
Retailer 12$1,281 NZD
Retailer 19$1,446 NZD
Retailer 3$1,450 NZD
Retailer 20$1,541 NZD
Retailer 17$2,096 NZD
Retailer 4$2,144 NZD
Brilliant Earth$2,224 NZD

31 data points across 20 retailers

20 retailers$363 NZD to $2,224 NZD

A
Cheapest Retailer
-
$363 NZD
A
Retailer 2
-
$406 NZD
View
Final sale: no returns
A
Retailer 3
-
$420 NZD
View
Retailer 4
-
$445 NZD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$450 NZD
View
A
Retailer 6
-
$596 NZD
View
A
Retailer 7
-
$768 NZD
View
A
Retailer 8
-
$768 NZD
View
A
Retailer 9
-
$777 NZD
View
A
Retailer 10
-
$818 NZD
View
B+
Retailer 11
-
$911 NZD
View
B+
Retailer 12
-
$1,019 NZD
View
B+
Retailer 13
-
$1,085 NZD
View
Retailer 14
-
$1,281 NZD
View
Price last confirmed 18 days ago
B+
Retailer 15
-
$1,446 NZD
View
B
Retailer 16
-
$1,450 NZD
View
B
Retailer 17
-
$1,541 NZD
View
B
Retailer 18
-
$2,096 NZD
View
B
Retailer 19
-
$2,144 NZD
View
Most Expensive
B
Brilliant Earth
16701368A · Nov 4
$2,224 NZD
$1,250 USD
View
19 more retailers have this diamond
Prices start from $363 NZDSave up to $1,861 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
$363 NZD