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Radiant|Lab Grown|IGI

1.59ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1 • IGI LG739595146

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

Certificate IGI LG739595146

Diamond specifications and retailer prices

From $323 NZD
$182 USD
As of October 30, 2026
Save $1,984 NZD (86%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,307 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.59ct lab-grown radiant diamond

This 1.59ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG739595146 or 739595146. Listed at 17 retailers as of October 30, 2026, with prices from $323 to $2,307, a $1,984 spread on the same certified stone. Brilliant Earth lists it at $2,307. 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

1.59
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.7°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739595146
Dimensions7.95 × 5.86 × 3.95 mm
L/W Ratio1.36
Culet sizePointed
Top View
7.95 mm5.86 mm1.59 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739595146
Side View
Table 65.0%Crown 45.7°Girdle: MediumPavilion 36°Culet: NoneDepth 67.4%

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: Oct 30
Current: $2,307 NZD|Low: $309 NZD|High: $2,378 NZD|Avg: $973 NZD|-3.0%
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
November 2, 2026
Retailer 10$323 NZD
Retailer 14$374 NZD
Retailer 3$399 NZD
Retailer 11$399 NZD
Retailer 6$541 NZD
Retailer 8$676 NZD
Retailer 2$721 NZD
Retailer 5$794 NZD
Retailer 4$866 NZD
Retailer 9$1,010 NZD
Retailer 12$1,285 NZD
Retailer 13$1,845 NZD
Retailer 7$1,868 NZD
Brilliant Earth$2,307 NZD

45 data points across 14 retailers

17 retailers$323 NZD to $2,307 NZD

A
Cheapest Retailer
-
$323 NZD
$182 USD
A
Retailer 2
-
$374 NZD
$211 USD
View
Retailer 3
-
$399 NZD
$225 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$399 NZD
$225 USD
View
A
Retailer 5
-
$454 NZD
HK$2,000 HKD
View
B+
Retailer 6
-
$541 NZD
$305 USD
View
A
Retailer 7
-
$676 NZD
€363 EUR
View
A
Retailer 8
-
$721 NZD
£320 GBP
View
A
Retailer 9
-
$794 NZD
$448 USD
View
B+
Retailer 10
-
$866 NZD
$488 USD
View
B+
Retailer 11
-
$940 NZD
$530 USD
View
B+
Retailer 12
-
$1,010 NZD
$569 USD
View
B+
Retailer 13
-
$1,285 NZD
$724 USD
View
B+
Retailer 14
-
$1,310 NZD
SGD 998 SGD
View
Retailer 15
-
$1,845 NZD
$1,040 USD
View
Price last confirmed 32 days ago
B
Retailer 16
-
$1,868 NZD
£829 GBP
View
Most Expensive
B
Brilliant Earth
20675146A · Oct 31
$2,307 NZD
$1,300 USD
View
16 more retailers have this diamond
Prices start from $323 NZDSave up to $1,984 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
1.59ct Radiant
$323 NZD