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Radiant|Natural|GIA

1.51ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 2564014021

Certificate GIA 2564014021

Diamond specifications and retailer prices

From $12,119 NZD
As of November 4, 2026
Save $9,198 NZD (43%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $22,924 NZD at NZ Jewellers · As of September 28, 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 2564014021. Listed at 14 retailers as of November 4, 2026, with a 76% 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564014021
Dimensions8.03 × 5.67 × 3.84 mm
L/W Ratio1.42
Girdle conditionThick
Top View
8.03 mm5.67 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2564014021
Side View
Table 66.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 67.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $14,341 NZD|Low: $9,939 NZD|High: $21,374 NZD|Avg: $14,112 NZD|+12.2%
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
November 7, 2026
Retailer 6$10,459 NZD
Retailer 3$12,119 NZD
Retailer 2$12,826 NZD
Retailer 14$12,826 NZD
Retailer 15$12,934 NZD
Retailer 5$13,194 NZD
Retailer 13$13,895 NZD
Retailer 7$14,000 NZD
Retailer 12$14,108 NZD
Retailer 1$14,341 NZD
Retailer 4$14,707 NZD
Retailer 8$14,864 NZD
Retailer 9$16,663 NZD
Retailer 10$18,712 NZD
Retailer 11$21,317 NZD

16 data points across 15 retailers

14 retailers$12,119 NZD to $21,317 NZD

B+
Cheapest Retailer
-
$12,119 NZD
B+
Retailer 2
-
$12,826 NZD
View
B+
Retailer 3
-
$12,826 NZD
View
Final sale: no returns
B+
Retailer 4
-
$12,934 NZD
View
Retailer 5
-
$13,194 NZD
View
Price last confirmed 40 days ago
B+
Retailer 6
-
$13,895 NZD
View
B+
Retailer 7
-
$14,108 NZD
View
B+
Retailer 8
-
$14,341 NZD
View
B
Retailer 9
-
$14,707 NZD
View
B+
Retailer 10
-
$14,864 NZD
View
B
Retailer 11
-
$16,663 NZD
View
B
Retailer 12
-
$18,712 NZD
View
B
Retailer 13
-
$21,317 NZD
View
Most Expensive
NZ Jewellers
93c09131-28a5-4d7a-821b-29a8cc6de063 · Sep 28
$22,924 NZD
$12,708 USD
View
Price last confirmed 40 days ago
13 more retailers have this diamond
Prices start from $12,119 NZDSave up to $9,198 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.

B+
1.51ct Radiant
$12,119 NZD