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Radiant|Natural|GIA

1.50ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 2557139819

Certificate GIA 2557139819

Diamond specifications and retailer prices

From $6,177 NZD
HK$27,200 HKD
As of November 2, 2026
Save $6,845 NZD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $15,463 NZD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557139819. Listed at 20 retailers as of November 1, 2026, with a 111% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2557139819
Dimensions7.30 × 5.60 × 3.92 mm
L/W Ratio1.30
Top View
7.30 mm5.60 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557139819
Side View
Table 67.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.9%

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 2
Current: $6,177 NZD|Low: $6,087 NZD|High: $13,685 NZD|Avg: $8,569 NZD|-5.6%
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
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 1$6,177 NZD
Retailer 17$6,519 NZD
Retailer 15$6,941 NZD
Retailer 10$6,967 NZD
Retailer 3$7,004 NZD
Retailer 6$7,142 NZD
Retailer 18$7,309 NZD
Retailer 8$7,376 NZD
Retailer 13$7,422 NZD
Retailer 5$7,473 NZD
Retailer 19$7,594 NZD
Retailer 16$7,790 NZD
Retailer 7$7,960 NZD
Retailer 11$8,939 NZD
Retailer 14$9,391 NZD
Retailer 4$10,203 NZD
Retailer 12$10,557 NZD
Retailer 9$12,978 NZD
Retailer 2$13,022 NZD

24 data points across 19 retailers

20 retailers$6,177 NZD to $13,022 NZD

A
Cheapest Retailer
-
$6,177 NZD
HK$27,200 HKD
A
Retailer 2
-
$6,519 NZD
$3,674 USD
View
A
Retailer 3
-
$6,941 NZD
$3,912 USD
View
Final sale: no returns
A
Retailer 4
-
$6,967 NZD
$3,927 USD
View
A
Retailer 5
-
$7,004 NZD
€3,760 EUR
View
A
Retailer 6
-
$7,142 NZD
$4,025 USD
View
A
Retailer 7
-
$7,309 NZD
A$6,338 AUD
View
A
Retailer 8
-
$7,376 NZD
$4,157 USD
View
A
Retailer 9
-
$7,422 NZD
$4,183 USD
View
A
Retailer 10
-
$7,473 NZD
$4,212 USD
View
A
Retailer 11
-
$7,594 NZD
$4,280 USD
View
A
Retailer 12
-
$7,790 NZD
£3,457 GBP
View
A
Retailer 13
-
$7,960 NZD
$4,486 USD
View
Retailer 14
-
$8,939 NZD
A$7,750 AUD
View
Price last confirmed 23 days ago
A
Retailer 15
-
$9,391 NZD
€5,041 EUR
View
B+
Retailer 16
-
$10,203 NZD
ZAR 92,900 ZAR
View
B+
Retailer 17
-
$10,557 NZD
$5,950 USD
View
Retailer 18
-
$12,978 NZD
$7,314 USD
View
Price last confirmed 9 days ago
B
Retailer 19
-
$13,022 NZD
£5,779 GBP
View
Most Expensive
NZ Jewellers
b734cccf-65a5-4d93-bb26-173a12bb62c9 · Sep 29
$15,463 NZD
$8,715 USD
View
Price last confirmed 33 days ago
19 more retailers have this diamond
Prices start from $6,177 NZDSave up to $6,845 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
1.50ct Radiant
$6,177 NZD