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Radiant|Natural|GIA

1.51ct F SI1 Radiant Natural Diamond

ID • F/SI1 • GIA 2556028833

Certificate GIA 2556028833

Diamond specifications and retailer prices

From $10,616 NZD
$5,973 USD
As of November 2, 2026
Save $9,517 NZD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $20,133 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556028833. Listed at 9 retailers as of November 2, 2026, with prices from $10,616 to $20,133, a $9,517 spread on the same certified stone. NZ Jewellers lists it at $20,133. 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
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.89°
Pavilion angle34.11°
OriginNatural
Grading LabGIA
CertificateGIA 2556028833
Dimensions7.58 × 5.77 × 3.90 mm
L/W Ratio1.31
Top View
7.58 mm5.77 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556028833
Side View
Table 70.0%Crown 44.89°Girdle: Slightly ThickPavilion 34.11°Culet: NoneDepth 67.6%

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: $20,133 NZD|Low: $10,616 NZD|High: $20,610 NZD|Avg: $13,371 NZD|-2.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9$10,616 NZD
Retailer 8$11,161 NZD
Retailer 5$11,262 NZD
Retailer 12$11,730 NZD
Retailer 10$12,024 NZD
Retailer 6$12,038 NZD
Retailer 2$12,222 NZD
Retailer 11$12,395 NZD
Retailer 4$12,818 NZD
Retailer 3$13,623 NZD
Retailer 7$17,735 NZD
NZ Jewellers$20,133 NZD

38 data points across 12 retailers

9 retailers$10,616 NZD to $20,133 NZD

A
Cheapest Retailer
-
$10,616 NZD
$5,973 USD
A
Retailer 2
-
$11,161 NZD
$6,280 USD
View
A
Retailer 3
-
$11,262 NZD
£4,990 GBP
View
Retailer 4
-
$12,024 NZD
A$10,408 AUD
View
Price last confirmed 30 days ago
A
Retailer 5
-
$12,038 NZD
$6,773 USD
View
A
Retailer 6
-
$12,222 NZD
$6,877 USD
View
B+
Retailer 7
-
$12,395 NZD
$6,974 USD
View
B+
Retailer 8
-
$17,735 NZD
£7,857 GBP
View
Most Expensive
B
NZ Jewellers
8996cd54-20d8-49ae-966b-2b52284cc1fc · Nov 3
$20,133 NZD
$11,328 USD
View
8 more retailers have this diamond
Prices start from $10,616 NZDSave up to $9,517 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
$10,616 NZD