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Radiant|Lab Grown|IGI

1.25ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG837639115

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

Certificate IGI LG837639115

Diamond specifications and retailer prices

From $322 NZD
$181 USD
As of October 30, 2026
Save $1,136 NZD (78%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,457 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.25ct lab-grown radiant diamond

This 1.25ct 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 LG837639115 or 837639115. Listed at 9 retailers as of October 30, 2026, with prices from $322 to $1,457, a $1,136 spread on the same certified stone. Brilliant Earth lists it at $1,457. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.6°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837639115
Dimensions7.60 × 5.17 × 3.54 mm
L/W Ratio1.47
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.60 mm5.17 mm1.25 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837639115
Side View
Table 66.0%Crown 45.6°Girdle: MediumPavilion 35°Culet: NoneDepth 68.5%

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: Oct 30
Current: $1,457 NZD|Low: $306 NZD|High: $1,867 NZD|Avg: $1,248 NZD|-15.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$306 NZD
Retailer 2$533 NZD
Retailer 7$670 NZD
Retailer 3$973 NZD
Retailer 4$1,354 NZD
Retailer 5$1,383 NZD
Brilliant Earth$1,457 NZD
Retailer 9$1,602 NZD
Retailer 8$1,867 NZD

10 data points across 9 retailers

9 retailers$322 NZD to $1,457 NZD

Retailer 1
-
$306 NZD
$172 USD
Price last confirmed 31 days ago
A
Retailer 2
-
$322 NZD
$181 USD
View
A
Retailer 3
-
$533 NZD
£236 GBP
View
B+
Retailer 4
-
$973 NZD
A$842 AUD
View
B+
Retailer 5
-
$1,244 NZD
$700 USD
View
Retailer 6
-
$1,269 NZD
$714 USD
View
Price last confirmed 33 days ago
B
Retailer 7
-
$1,354 NZD
$762 USD
View
B
Retailer 8
-
$1,383 NZD
$778 USD
View
Most Expensive
B
Brilliant Earth
21478386A · Nov 2
$1,457 NZD
$820 USD
View
8 more retailers have this diamond
Prices start from $322 NZDSave up to $1,136 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
1.25ct Radiant
$322 NZD