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Radiant|Natural|GIA

1.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 1555665977

Certificate GIA 1555665977

Diamond specifications and retailer prices

From $8,376 NZD
As of November 4, 2026
Save $8,181 NZD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $16,556 NZD at NZ Jewellers · As of November 5, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555665977. Listed at 15 retailers as of November 4, 2026, with prices from $8,376 to $16,556, a $8,181 spread on the same certified stone. NZ Jewellers lists it at $16,556. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.22°
OriginNatural
Grading LabGIA
CertificateGIA 1555665977
Dimensions7.78 × 5.83 × 3.99 mm
L/W Ratio1.33
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
7.78 mm5.83 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555665977
Side View
Table 68.0%Crown 43.22°Girdle: Slightly ThickPavilionCulet: NoneDepth 68.4%

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 4
Current: $16,556 NZD|Low: $8,114 NZD|High: $16,735 NZD|Avg: $10,801 NZD|-1.1%
NZ Jewellers
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 7, 2026
Retailer 4$8,376 NZD
Retailer 14$8,633 NZD
Retailer 3$9,137 NZD
Retailer 7$9,537 NZD
Retailer 2$9,562 NZD
Retailer 5$9,898 NZD
Retailer 6$9,898 NZD
Retailer 12$9,898 NZD
Retailer 13$10,176 NZD
Retailer 11$10,356 NZD
Retailer 8$11,139 NZD
Retailer 10$11,422 NZD
Retailer 9$15,725 NZD
NZ Jewellers$16,556 NZD

29 data points across 14 retailers

15 retailers$8,376 NZD to $16,556 NZD

A
Cheapest Retailer
-
$8,376 NZD
A
Retailer 2
-
$8,633 NZD
View
A
Retailer 3
-
$9,137 NZD
View
Final sale: no returns
A
Retailer 4
-
$9,537 NZD
View
A
Retailer 5
-
$9,562 NZD
View
Retailer 6
-
$9,898 NZD
View
Price last confirmed 9 days ago
A
Retailer 7
-
$9,898 NZD
View
A
Retailer 8
-
$9,898 NZD
View
A
Retailer 9
-
$10,176 NZD
View
B+
Retailer 10
-
$10,356 NZD
View
B+
Retailer 11
-
$11,139 NZD
View
B+
Retailer 12
-
$11,422 NZD
View
Retailer 13
-
$11,545 NZD
View
Price last confirmed 17 days ago
B
Retailer 14
-
$15,725 NZD
View
Most Expensive
B
NZ Jewellers
4550dc16-0292-4ea4-b8e9-ba98c68b4e06 · Nov 5
$16,556 NZD
$9,178 USD
View
14 more retailers have this diamond
Prices start from $8,376 NZDSave up to $8,181 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
$8,376 NZD