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Radiant|Lab Grown|IGI

1.30ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG648436048

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

Certificate IGI LG648436048

Diamond specifications and retailer prices

From $274 NZD
$154 USD
As of November 2, 2026
Save $1,585 NZD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,859 NZD at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

About this 1.3ct lab-grown radiant diamond

This 1.3ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG648436048 or 648436048. Listed at 15 retailers as of November 1, 2026, with prices from $274 to $1,859, a $1,585 spread on the same certified stone. Reve Diamonds lists it at $1,859. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.30
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle30°
OriginLab Grown
Grading LabIGI
CertificateIGI LG648436048
Dimensions7.39 × 5.34 × 3.60 mm
L/W Ratio1.38
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.39 mm5.34 mm1.30 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG648436048
Side View
Table 60.0%Crown 40.6°Girdle: MED-STKPavilion 30°Culet: NoneDepth 67.4%

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 2
Current: $591 NZD|Low: $274 NZD|High: $1,859 NZD|Avg: $858 NZD|+4.6%
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
Reve Diamonds
November 2, 2026
Retailer 5$274 NZD
Retailer 3$304 NZD
Retailer 12$339 NZD
Retailer 16$339 NZD
Retailer 4$407 NZD
Retailer 11$459 NZD
Retailer 1$591 NZD
Retailer 10$660 NZD
Retailer 2$791 NZD
Retailer 15$871 NZD
Retailer 8$966 NZD
Retailer 6$1,088 NZD
Retailer 13$1,150 NZD
Retailer 7$1,187 NZD
Retailer 14$1,475 NZD
Retailer 9$1,582 NZD
Reve Diamonds$1,859 NZD

18 data points across 17 retailers

15 retailers$274 NZD to $1,859 NZD

A
Cheapest Retailer
-
$274 NZD
$154 USD
A
Retailer 2
-
$304 NZD
$171 USD
View
Final sale: no returns
Retailer 3
-
$339 NZD
$191 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$339 NZD
$191 USD
View
B+
Retailer 5
-
$459 NZD
$258 USD
View
A
Retailer 6
-
$591 NZD
£262 GBP
View
A
Retailer 7
-
$660 NZD
£292 GBP
View
B+
Retailer 8
-
$791 NZD
$445 USD
View
B+
Retailer 9
-
$871 NZD
$490 USD
View
B+
Retailer 10
-
$1,088 NZD
$612 USD
View
B
Retailer 11
-
$1,150 NZD
$647 USD
View
B
Retailer 12
-
$1,187 NZD
$668 USD
View
Retailer 13
-
$1,475 NZD
$830 USD
View
Price last confirmed 12 days ago
B
Retailer 14
-
$1,582 NZD
£701 GBP
View
Most Expensive
B
Reve Diamonds
F3D683A23 · Nov 1
$1,859 NZD
$1,046 USD
View
14 more retailers have this diamond
Prices start from $274 NZDSave up to $1,585 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
1.30ct Radiant
$274 NZD