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Radiant|Natural|GIA

1.51ct G SI1 Radiant Natural Diamond

GD • G/SI1 • GIA 1435576385

Certificate GIA 1435576385

Diamond specifications and retailer prices

From $18,715 NZD
$10,530 USD
As of October 28, 2026
Save $16,568 NZD (47%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $35,283 NZD at NZ Jewellers · As of November 3, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1435576385. Listed at 22 retailers as of October 28, 2026, with prices from $18,715 to $35,283, a $16,568 spread on the same certified stone. NZ Jewellers lists it at $35,283. 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1435576385
Dimensions8.06 × 5.60 × 3.86 mm
L/W Ratio1.44
Culet sizeNone
Top View
8.06 mm5.60 mm1.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1435576385
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.9%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $35,283 NZD|Low: $17,641 NZD|High: $35,283 NZD|Avg: $25,388 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 8$18,715 NZD
Retailer 9$21,169 NZD
Retailer 11$21,169 NZD
Retailer 2$22,907 NZD
Retailer 3$22,934 NZD
Retailer 7$23,038 NZD
Retailer 10$23,286 NZD
Retailer 4$26,667 NZD
Retailer 6$31,101 NZD
Retailer 5$33,061 NZD
NZ Jewellers$35,283 NZD

44 data points across 11 retailers

22 retailers$18,715 NZD to $35,283 NZD

B
Cheapest Retailer
-
$18,715 NZD
$10,530 USD
B
Retailer 2
-
$19,641 NZD
$11,051 USD
View
B
Retailer 3
-
$19,652 NZD
$11,057 USD
View
B
Retailer 4
-
$19,918 NZD
A$17,241 AUD
View
B
Retailer 5
-
$19,934 NZD
CA$15,578 CAD
View
B
Retailer 6
-
$20,857 NZD
$11,735 USD
View
B
Retailer 7
-
$21,169 NZD
$11,911 USD
View
B
Retailer 8
-
$21,169 NZD
$11,911 USD
View
Final sale: no returns
B
Retailer 9
-
$21,345 NZD
$12,010 USD
View
B
Retailer 10
-
$22,907 NZD
£10,149 GBP
View
B
Retailer 11
-
$22,934 NZD
$12,904 USD
View
Retailer 12
-
$23,038 NZD
A$19,942 AUD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$23,286 NZD
$13,102 USD
View
B
Retailer 14
-
$24,491 NZD
$13,780 USD
View
B
Retailer 15
-
$24,491 NZD
$13,780 USD
View
B
Retailer 16
-
$24,507 NZD
$13,789 USD
View
B
Retailer 17
-
$25,309 NZD
$14,240 USD
View
C
Retailer 18
-
$26,462 NZD
$14,889 USD
View
B
Retailer 19
-
$26,667 NZD
€14,290 EUR
View
B
Retailer 20
-
$31,101 NZD
ZAR 282,694 ZAR
View
B
Retailer 21
-
$33,061 NZD
£14,647 GBP
View
Most Expensive
C
NZ Jewellers
9f4347c2-9e93-4dd6-bdc7-aa3dc2a5b770 · Nov 3
$35,283 NZD
$19,852 USD
View
21 more retailers have this diamond
Prices start from $18,715 NZDSave up to $16,568 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
$18,715 NZD