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Radiant|Natural|GIA

1.51ct I SI1 Radiant Natural Diamond

VG • I/SI1 • GIA 2436825305

Certificate GIA 2436825305

Diamond specifications and retailer prices

From $12,365 NZD
$6,957 USD
As of November 1, 2026
Save $13,794 NZD (53%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $26,158 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 I 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 2436825305. Listed at 12 retailers as of October 30, 2026, with prices from $12,365 to $26,158, a $13,794 spread on the same certified stone. NZ Jewellers lists it at $26,158. 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2436825305
Dimensions8.52 × 5.46 × 3.64 mm
L/W Ratio1.56
Top View
8.52 mm5.46 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2436825305
Side View
Table 71.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 66.7%

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: $26,158 NZD|Low: $11,988 NZD|High: $26,158 NZD|Avg: $16,588 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5$13,077 NZD
Retailer 8$13,079 NZD
Retailer 7$14,169 NZD
Retailer 6$14,387 NZD
Retailer 3$14,723 NZD
Retailer 10$15,729 NZD
Retailer 9$16,349 NZD
Retailer 2$16,355 NZD
Retailer 4$21,795 NZD
NZ Jewellers$26,158 NZD

40 data points across 10 retailers

12 retailers$12,365 NZD to $26,158 NZD

B+
Cheapest Retailer
-
$12,365 NZD
$6,957 USD
B
Retailer 2
-
$13,077 NZD
$7,358 USD
View
Final sale: no returns
B
Retailer 3
-
$14,169 NZD
$7,972 USD
View
B
Retailer 4
-
$14,387 NZD
$8,095 USD
View
B
Retailer 5
-
$14,723 NZD
£6,523 GBP
View
B
Retailer 6
-
$15,729 NZD
$8,850 USD
View
B
Retailer 7
-
$15,729 NZD
$8,850 USD
View
B
Retailer 8
-
$16,262 NZD
$9,150 USD
View
B
Retailer 9
-
$16,349 NZD
$9,199 USD
View
B
Retailer 10
-
$16,355 NZD
€8,764 EUR
View
B
Retailer 11
-
$21,795 NZD
£9,656 GBP
View
Most Expensive
C
NZ Jewellers
ab9b8bea-9850-4c55-a97e-6b68f5f90322 · Oct 30
$26,158 NZD
$14,718 USD
View
11 more retailers have this diamond
Prices start from $12,365 NZDSave up to $13,794 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
$12,365 NZD