Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1533904580

Certificate GIA 1533904580

Diamond specifications and retailer prices

From $8,827 NZD
HK$38,800 HKD
As of November 1, 2026
Save $8,698 NZD (50%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $19,893 NZD at NZ Jewellers · As of September 28, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1533904580. Listed at 21 retailers as of November 1, 2026, with a 99% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1533904580
Dimensions7.28 × 7.24 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
Clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Feather, Needle, Indented Natural, Natural
Top View
7.28 mm7.24 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1533904580
Side View
Table 57.0%Crown 36°Girdle: STK-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $13,180 NZD|Low: $8,827 NZD|High: $17,735 NZD|Avg: $12,923 NZD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$8,827 NZD
Retailer 9$10,355 NZD
Retailer 8$10,977 NZD
Retailer 2$11,238 NZD
Retailer 7$11,609 NZD
Retailer 4$12,938 NZD
Retailer 1$13,180 NZD
Retailer 5$14,614 NZD
Retailer 3$17,525 NZD

40 data points across 9 retailers

21 retailers$8,827 NZD to $17,525 NZD

A
Cheapest Retailer
-
$8,827 NZD
HK$38,800 HKD
Retailer 2
-
$10,072 NZD
SGD 7,658 SGD
View
Price last confirmed 19 days ago
B+
Retailer 3
-
$10,355 NZD
$5,826 USD
View
B+
Retailer 4
-
$10,372 NZD
$5,836 USD
View
Retailer 5
-
$10,785 NZD
$6,068 USD
View
Price last confirmed 105 days ago
B+
Retailer 6
-
$10,977 NZD
$6,176 USD
View
Final sale: no returns
Retailer 7
-
$10,980 NZD
$6,178 USD
View
Price last confirmed 25 days ago
B+
Retailer 8
-
$11,037 NZD
$6,210 USD
View
B+
Retailer 9
-
$11,238 NZD
£4,979 GBP
View
Retailer 10
-
$11,609 NZD
A$10,049 AUD
View
Price last confirmed 20 days ago
B+
Retailer 11
-
$11,822 NZD
$6,652 USD
View
Retailer 12
-
$11,894 NZD
$6,692 USD
View
Price last confirmed 25 days ago
Retailer 13
-
$12,077 NZD
$6,795 USD
View
Price last confirmed 34 days ago
B+
Retailer 14
-
$12,178 NZD
$6,852 USD
View
B
Retailer 15
-
$12,938 NZD
€6,933 EUR
View
B+
Retailer 16
-
$13,180 NZD
£5,839 GBP
View
Retailer 17
-
$13,724 NZD
$7,722 USD
View
Price last confirmed 56 days ago
Retailer 18
-
$13,724 NZD
$7,722 USD
View
Price last confirmed 24 days ago
B+
Retailer 19
-
$14,614 NZD
ZAR 132,836 ZAR
View
B
Retailer 20
-
$17,525 NZD
£7,764 GBP
View
Most Expensive
NZ Jewellers
2e3019be-6bad-462a-ae34-2634988fc2a2 · Sep 28
$19,893 NZD
$11,193 USD
View
Price last confirmed 35 days ago
20 more retailers have this diamond
Prices start from $8,827 NZDSave up to $8,698 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.

A
1.51ct Round
$8,827 NZD