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Radiant|Natural|GIA

1.51ct H SI2 Radiant Natural Diamond

ID • H/SI2 • GIA 7551461310

Certificate GIA 7551461310

Diamond specifications and retailer prices

From $7,187 NZD
As of November 6, 2026
Save $5,253 NZD (42%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $12,869 NZD at NZ Jewellers · As of October 18, 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 7551461310. Listed at 12 retailers as of November 4, 2026, with a 73% 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

1.51
Carat
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551461310
Dimensions7.53 × 5.52 × 3.91 mm
L/W Ratio1.36
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
7.53 mm5.52 mm1.51 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551461310
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.8%

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 6
Current: $7,187 NZD|Low: $5,148 NZD|High: $12,539 NZD|Avg: $7,758 NZD|+0.1%
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
November 6, 2026
Retailer 13$5,854 NZD
Retailer 4$5,998 NZD
Retailer 2$6,178 NZD
Retailer 3$6,692 NZD
Retailer 14$6,692 NZD
Retailer 1$7,187 NZD
Retailer 7$7,428 NZD
Retailer 10$7,630 NZD
Retailer 11$7,630 NZD
Retailer 12$7,883 NZD
Retailer 8$8,394 NZD
Retailer 6$8,458 NZD
Retailer 5$8,783 NZD
Retailer 9$12,440 NZD

38 data points across 14 retailers

12 retailers$7,187 NZD to $12,440 NZD

Retailer 1
-
$5,854 NZD
Price last confirmed 20 days ago
Retailer 2
-
$6,692 NZD
View
Price last confirmed 18 days ago
Retailer 3
-
$6,950 NZD
View
Price last confirmed 22 days ago
A
Retailer 4
-
$7,187 NZD
View
A
Retailer 5
-
$7,428 NZD
View
A
Retailer 6
-
$7,630 NZD
View
A
Retailer 7
-
$7,630 NZD
View
Retailer 8
-
$7,722 NZD
View
Price last confirmed 19 days ago
A
Retailer 9
-
$7,883 NZD
View
A
Retailer 10
-
$8,394 NZD
View
B+
Retailer 11
-
$12,440 NZD
View
Most Expensive
NZ Jewellers
40e17ac5-537e-4093-884e-eb953dbc55d5 · Oct 18
$12,869 NZD
$7,134 USD
View
Price last confirmed 20 days ago
11 more retailers have this diamond
Prices start from $7,187 NZDSave up to $5,253 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
$7,187 NZD