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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 2235951484

Certificate GIA 2235951484

Diamond specifications and retailer prices

From $8,709 NZD
$4,900 USD
As of November 1, 2026
Save $9,937 NZD (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $18,646 NZD at NZ Jewellers · As of October 30, 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 J 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 2235951484. Listed at 22 retailers as of October 30, 2026, with prices from $8,709 to $18,646, a $9,937 spread on the same certified stone. NZ Jewellers lists it at $18,646. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle44.08°
OriginNatural
Grading LabGIA
CertificateGIA 2235951484
Dimensions7.91 × 5.75 × 3.89 mm
L/W Ratio1.38
Top View
7.91 mm5.75 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2235951484
Side View
Table 65.0%Crown 44.08°Girdle: 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 1
Current: $18,646 NZD|Low: $8,808 NZD|High: $18,646 NZD|Avg: $11,641 NZD
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 2, 2026
Retailer 11$8,808 NZD
Retailer 4$9,400 NZD
Retailer 13$9,400 NZD
Retailer 12$9,437 NZD
Retailer 3$10,099 NZD
Retailer 6$10,099 NZD
Retailer 14$10,099 NZD
Retailer 5$10,646 NZD
Retailer 7$10,694 NZD
Retailer 10$11,020 NZD
Retailer 2$11,499 NZD
Retailer 8$13,697 NZD
Retailer 9$16,511 NZD
NZ Jewellers$18,646 NZD

44 data points across 14 retailers

22 retailers$8,709 NZD to $18,646 NZD

B+
Cheapest Retailer
-
$8,709 NZD
$4,900 USD
B+
Retailer 2
-
$8,808 NZD
$4,956 USD
View
B
Retailer 3
-
$9,170 NZD
A$7,938 AUD
View
B
Retailer 4
-
$9,400 NZD
CA$7,346 CAD
View
B
Retailer 5
-
$9,400 NZD
$5,289 USD
View
B
Retailer 6
-
$9,437 NZD
$5,310 USD
View
B
Retailer 7
-
$10,099 NZD
$5,682 USD
View
B
Retailer 8
-
$10,099 NZD
$5,682 USD
View
B
Retailer 9
-
$10,099 NZD
$5,682 USD
View
B
Retailer 10
-
$10,646 NZD
$5,990 USD
View
B
Retailer 11
-
$10,694 NZD
£4,738 GBP
View
Retailer 12
-
$11,020 NZD
A$9,539 AUD
View
Price last confirmed 22 days ago
B
Retailer 13
-
$11,268 NZD
$6,340 USD
View
B
Retailer 14
-
$11,268 NZD
$6,340 USD
View
B
Retailer 15
-
$11,423 NZD
$6,427 USD
View
B
Retailer 16
-
$11,499 NZD
€6,162 EUR
View
B
Retailer 17
-
$11,641 NZD
$6,550 USD
View
B
Retailer 18
-
$11,654 NZD
$6,557 USD
View
Retailer 19
-
$12,292 NZD
$6,916 USD
View
Price last confirmed 10 days ago
B
Retailer 20
-
$13,697 NZD
ZAR 124,500 ZAR
View
B
Retailer 21
-
$16,511 NZD
£7,315 GBP
View
Most Expensive
B
NZ Jewellers
ce8079b4-efe5-4bf1-8854-70654ab1cd25 · Oct 30
$18,646 NZD
$10,491 USD
View
21 more retailers have this diamond
Prices start from $8,709 NZDSave up to $9,937 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
$8,709 NZD