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Radiant|Natural|GIA

1.51ct J SI1 Radiant Natural Diamond

VG • J/SI1 • GIA 2171943911

Certificate GIA 2171943911

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)
23 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2171943911. Listed at 23 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. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2171943911
Dimensions7.12 × 5.74 × 3.98 mm
L/W Ratio1.24
Culet sizeNone
Top View
7.12 mm5.74 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2171943911
Side View
Table 67.0%CrownGirdle: THK-THKPavilionCulet: NoneDepth 69.3%

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: $8,080 NZD|High: $18,646 NZD|Avg: $11,869 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
November 2, 2026
Retailer 8$8,549 NZD
Retailer 10$8,808 NZD
Retailer 12$9,322 NZD
Retailer 9$9,400 NZD
Retailer 3$10,099 NZD
Retailer 4$10,099 NZD
Retailer 5$10,694 NZD
Retailer 11$11,020 NZD
Retailer 2$12,179 NZD
Retailer 7$13,697 NZD
Retailer 6$16,423 NZD
NZ Jewellers$18,646 NZD

44 data points across 12 retailers

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

Retailer 1
-
$8,549 NZD
$4,810 USD
Price last confirmed 15 days ago
B+
Retailer 2
-
$8,709 NZD
$4,900 USD
View
B+
Retailer 3
-
$8,808 NZD
$4,956 USD
View
B
Retailer 4
-
$9,170 NZD
A$7,938 AUD
View
B
Retailer 5
-
$9,322 NZD
$5,245 USD
View
Final sale: no returns
B
Retailer 6
-
$9,400 NZD
$5,289 USD
View
B
Retailer 7
-
$9,437 NZD
$5,310 USD
View
B
Retailer 8
-
$9,974 NZD
$5,612 USD
View
B
Retailer 9
-
$10,099 NZD
$5,682 USD
View
B
Retailer 10
-
$10,099 NZD
$5,682 USD
View
B
Retailer 11
-
$10,099 NZD
$5,682 USD
View
B
Retailer 12
-
$10,694 NZD
£4,738 GBP
View
B
Retailer 13
-
$10,834 NZD
A$9,378 AUD
View
Retailer 14
-
$11,020 NZD
A$9,539 AUD
View
Price last confirmed 23 days ago
B
Retailer 15
-
$11,090 NZD
$6,240 USD
View
B
Retailer 16
-
$11,090 NZD
$6,240 USD
View
B
Retailer 17
-
$11,446 NZD
$6,440 USD
View
B
Retailer 18
-
$11,654 NZD
$6,557 USD
View
B
Retailer 19
-
$12,179 NZD
€6,526 EUR
View
Retailer 20
-
$12,292 NZD
$6,916 USD
View
Price last confirmed 10 days ago
B
Retailer 21
-
$13,697 NZD
ZAR 124,500 ZAR
View
B
Retailer 22
-
$16,423 NZD
£7,276 GBP
View
Most Expensive
C
NZ Jewellers
5e857763-58db-40dd-b925-02ba4a7cf632 · Oct 30
$18,646 NZD
$10,491 USD
View
22 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