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Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

ID • H/SI1 • GIA 5563118999

Certificate GIA 5563118999

Diamond specifications and retailer prices

From $5,875 NZD
As of November 1, 2026
Save $5,219 NZD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $11,094 NZD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct 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 5563118999. Listed at 9 retailers as of November 1, 2026, with prices from $5,875 to $11,094, a $5,219 spread on the same certified stone. NZ Jewellers lists it at $11,094. 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

1.51
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle51.21°
Pavilion angle36.78°
OriginNatural
Grading LabGIA
CertificateGIA 5563118999
Dimensions7.52 × 5.79 × 3.92 mm
L/W Ratio1.30
Girdle conditionThick
Key to symbols
Crystal, Cavity, Feather, Needle, Natural
Top View
7.52 mm5.79 mm1.51 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5563118999
Side View
Table 71.0%Crown 51.21°Girdle: MED-POLPavilion 36.78°Culet: NoneDepth 67.7%

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 1
Current: $11,094 NZD|Low: $5,810 NZD|High: $11,231 NZD|Avg: $7,631 NZD|-1.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 4, 2026
Retailer 5$5,875 NZD
Retailer 3$5,998 NZD
Retailer 2$6,296 NZD
Retailer 7$6,368 NZD
Retailer 9$6,512 NZD
Retailer 6$6,613 NZD
Retailer 8$6,819 NZD
Retailer 4$10,647 NZD
NZ Jewellers$11,094 NZD

35 data points across 9 retailers

9 retailers$5,875 NZD to $11,094 NZD

A
Cheapest Retailer
-
$5,875 NZD
A
Retailer 2
-
$5,998 NZD
View
A
Retailer 3
-
$6,296 NZD
View
A
Retailer 4
-
$6,368 NZD
View
A
Retailer 5
-
$6,512 NZD
View
A
Retailer 6
-
$6,613 NZD
View
Retailer 7
-
$6,819 NZD
View
Price last confirmed 30 days ago
B+
Retailer 8
-
$10,647 NZD
View
Most Expensive
B+
NZ Jewellers
f1ce2716-69c6-4751-816e-3e008bf35d4b · Nov 3
$11,094 NZD
$6,150 USD
View
8 more retailers have this diamond
Prices start from $5,875 NZDSave up to $5,219 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
1.51ct Radiant
$5,875 NZD