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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5443367010

Certificate GIA 5443367010

Diamond specifications and retailer prices

From $9,145 NZD
HK$40,200 HKD
As of November 1, 2026
Save $11,454 NZD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $20,599 NZD at NZ Jewellers · As of October 27, 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 5443367010. Listed at 19 retailers as of October 27, 2026, with prices from $9,145 to $20,599, a $11,454 spread on the same certified stone. NZ Jewellers lists it at $20,599. 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
FluorescenceNone
Crown angle32°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5443367010
Dimensions7.36 × 7.40 × 4.50 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.36 mm7.40 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5443367010
Side View
Table 57.0%Crown 32°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.0%

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: $12,756 NZD|Low: $9,145 NZD|High: $18,364 NZD|Avg: $12,973 NZD|+9.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 4$9,145 NZD
Retailer 3$10,420 NZD
Retailer 9$11,279 NZD
Retailer 10$11,368 NZD
Retailer 11$12,078 NZD
Retailer 2$12,505 NZD
Retailer 5$12,705 NZD
Retailer 1$12,756 NZD
Retailer 6$13,690 NZD
Retailer 7$14,997 NZD
Retailer 8$18,170 NZD

41 data points across 11 retailers

19 retailers$9,145 NZD to $20,599 NZD

A
Cheapest Retailer
-
$9,145 NZD
HK$40,200 HKD
Retailer 2
-
$10,420 NZD
$5,863 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$10,742 NZD
$6,044 USD
View
B+
Retailer 4
-
$10,765 NZD
$6,057 USD
View
B+
Retailer 5
-
$11,279 NZD
SGD 8,576 SGD
View
Retailer 6
-
$11,369 NZD
$6,397 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$11,410 NZD
$6,420 USD
View
Price last confirmed 5 days ago
Retailer 8
-
$12,078 NZD
A$10,455 AUD
View
Price last confirmed 29 days ago
Retailer 9
-
$12,317 NZD
$6,930 USD
View
Price last confirmed 7 days ago
Retailer 10
-
$12,505 NZD
$7,036 USD
View
Price last confirmed 8 days ago
Retailer 11
-
$12,601 NZD
$7,090 USD
View
Price last confirmed 8 days ago
B+
Retailer 12
-
$12,603 NZD
$7,091 USD
View
B+
Retailer 13
-
$12,705 NZD
€6,808 EUR
View
B
Retailer 14
-
$12,756 NZD
£5,651 GBP
View
B+
Retailer 15
-
$13,690 NZD
£6,065 GBP
View
B+
Retailer 16
-
$14,211 NZD
$7,996 USD
View
B+
Retailer 17
-
$14,997 NZD
ZAR 136,322 ZAR
View
B
Retailer 18
-
$18,170 NZD
£8,050 GBP
View
Most Expensive
B
NZ Jewellers
52f86b50-f4b6-4949-93c9-690b18e8f1aa · Oct 27
$20,599 NZD
$11,590 USD
View
18 more retailers have this diamond
Prices start from $9,145 NZDSave up to $11,454 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
$9,145 NZD