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Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2436486853

Certificate GIA 2436486853

Diamond specifications and retailer prices

From $14,512 NZD
As of November 1, 2026
Save $12,642 NZD (47%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $27,154 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2436486853. Listed at 17 retailers as of November 1, 2026, with prices from $14,512 to $27,154, a $12,642 spread on the same certified stone. NZ Jewellers lists it at $27,154. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2436486853
Dimensions7.36 × 7.32 × 4.54 mm
L/W Ratio1.01
Top View
7.36 mm7.32 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2436486853
Side View
Table 55.0%Crown 34°Girdle: THN-THKPavilion 40.6°Culet: NoneDepth 61.8%

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: $27,154 NZD|Low: $14,512 NZD|High: $27,154 NZD|Avg: $19,867 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$14,512 NZD
Retailer 7$16,293 NZD
Retailer 2$17,523 NZD
Retailer 9$17,651 NZD
Retailer 6$17,922 NZD
Retailer 3$19,433 NZD
Retailer 8$20,366 NZD
Retailer 4$25,375 NZD
NZ Jewellers$27,154 NZD

42 data points across 9 retailers

17 retailers$14,512 NZD to $27,154 NZD

B+
Cheapest Retailer
-
$14,512 NZD
B+
Retailer 2
-
$14,801 NZD
View
B
Retailer 3
-
$15,256 NZD
View
B
Retailer 4
-
$15,786 NZD
View
Retailer 5
-
$16,293 NZD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$17,523 NZD
View
B
Retailer 7
-
$17,651 NZD
View
B
Retailer 8
-
$17,922 NZD
View
B
Retailer 9
-
$18,770 NZD
View
B
Retailer 10
-
$19,193 NZD
View
B
Retailer 11
-
$19,193 NZD
View
B
Retailer 12
-
$19,433 NZD
View
B
Retailer 13
-
$19,843 NZD
View
B
Retailer 14
-
$20,366 NZD
View
Retailer 15
-
$21,443 NZD
View
Price last confirmed 14 days ago
B
Retailer 16
-
$25,375 NZD
View
Most Expensive
B
NZ Jewellers
0c32f121-0fbc-460c-a3f1-404ed955b21d · Nov 5
$27,154 NZD
$15,053 USD
View
16 more retailers have this diamond
Prices start from $14,512 NZDSave up to $12,642 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 Round
$14,512 NZD