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Round|Natural|GIA

1.51ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 6531260924

Certificate GIA 6531260924

Diamond specifications and retailer prices

From $5,860 NZD
HK$25,700 HKD
As of October 29, 2026
Save $8,112 NZD (58%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $13,972 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6531260924. Listed at 19 retailers as of October 27, 2026, with prices from $5,860 to $13,972, a $8,112 spread on the same certified stone. NZ Jewellers lists it at $13,972. 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

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceVery Strong
Crown angle37°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 6531260924
Dimensions7.20 × 7.11 × 4.54 mm
L/W Ratio1.01
Top View
7.20 mm7.11 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceVery Strong
CertificateGIA 6531260924
Side View
Table 58.0%Crown 37°Girdle: STK-THKPavilion 40°Culet: NoneDepth 63.5%

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: Oct 29
Current: $13,972 NZD|Low: $5,860 NZD|High: $13,972 NZD|Avg: $8,697 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 29, 2026
Retailer 4$5,860 NZD
Retailer 10$6,855 NZD
Retailer 12$7,153 NZD
Retailer 14$7,400 NZD
Retailer 13$7,402 NZD
Retailer 3$8,020 NZD
Retailer 5$8,020 NZD
Retailer 15$8,085 NZD
Retailer 7$8,094 NZD
Retailer 9$8,117 NZD
Retailer 11$8,993 NZD
Retailer 8$9,026 NZD
Retailer 6$9,253 NZD
Retailer 2$12,842 NZD
NZ Jewellers$13,972 NZD

42 data points across 15 retailers

19 retailers$5,860 NZD to $13,972 NZD

A
Cheapest Retailer
-
$5,860 NZD
HK$25,700 HKD
B+
Retailer 2
-
$6,855 NZD
$3,848 USD
View
B+
Retailer 3
-
$6,939 NZD
$3,895 USD
View
Price last confirmed 11 days ago
B+
Retailer 4
-
$6,994 NZD
$3,926 USD
View
B+
Retailer 5
-
$7,153 NZD
$4,015 USD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
$7,400 NZD
$4,154 USD
View
Final sale: no returns
A
Retailer 7
-
$7,402 NZD
SGD 5,615 SGD
View
B+
Retailer 8
-
$7,463 NZD
SGD 5,661 SGD
View
B+
Retailer 9
-
$8,020 NZD
$4,502 USD
View
B+
Retailer 10
-
$8,020 NZD
$4,502 USD
View
A
Retailer 11
-
$8,085 NZD
A$6,982 AUD
View
Price last confirmed 19 days ago
B+
Retailer 12
-
$8,094 NZD
$4,543 USD
View
B+
Retailer 13
-
$8,117 NZD
£3,587 GBP
View
B+
Retailer 14
-
$8,993 NZD
£3,975 GBP
View
B+
Retailer 15
-
$9,026 NZD
€4,825 EUR
View
B+
Retailer 16
-
$9,253 NZD
$5,194 USD
View
B
Retailer 17
-
$11,398 NZD
$6,398 USD
View
B
Retailer 18
-
$12,842 NZD
£5,676 GBP
View
Most Expensive
B
NZ Jewellers
1cc335ea-eb93-44d1-91b3-413f7d96281e · Oct 27
$13,972 NZD
$7,843 USD
View
18 more retailers have this diamond
Prices start from $5,860 NZDSave up to $8,112 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
$5,860 NZD