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Round|Natural|GIA

1.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 2231531483

Certificate GIA 2231531483

Diamond specifications and retailer prices

From $9,034 NZD
$5,083 USD
As of November 1, 2026
Save $10,086 NZD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $19,120 NZD at NZ Jewellers · As of September 18, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2231531483. Listed at 19 retailers as of November 1, 2026, with a 112% 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2231531483
Dimensions7.33 × 7.30 × 4.56 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Culet sizeNone
Top View
7.33 mm7.30 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2231531483
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.5%

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: Nov 1
Current: $19,120 NZD|Low: $8,762 NZD|High: $19,120 NZD|Avg: $12,260 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6$9,073 NZD
Retailer 7$9,558 NZD
Retailer 8$10,356 NZD
Retailer 9$10,356 NZD
Retailer 10$10,356 NZD
Retailer 4$10,802 NZD
Retailer 11$11,951 NZD
Retailer 3$12,351 NZD
Retailer 2$12,459 NZD
Retailer 5$16,843 NZD
NZ Jewellers$19,120 NZD

40 data points across 11 retailers

19 retailers$9,034 NZD to $19,120 NZD

A
Cheapest Retailer
-
$9,034 NZD
$5,083 USD
A
Retailer 2
-
$9,073 NZD
$5,105 USD
View
A
Retailer 3
-
$9,558 NZD
$5,378 USD
View
Final sale: no returns
A
Retailer 4
-
$10,356 NZD
$5,827 USD
View
A
Retailer 5
-
$10,356 NZD
$5,827 USD
View
Retailer 6
-
$10,356 NZD
$5,827 USD
View
Price last confirmed 46 days ago
A
Retailer 7
-
$10,356 NZD
$5,827 USD
View
A
Retailer 8
-
$10,802 NZD
£4,786 GBP
View
Retailer 9
-
$11,951 NZD
$6,724 USD
View
Price last confirmed 46 days ago
B+
Retailer 10
-
$11,951 NZD
$6,724 USD
View
B+
Retailer 11
-
$12,032 NZD
$6,770 USD
View
B+
Retailer 12
-
$12,032 NZD
$6,770 USD
View
B+
Retailer 13
-
$12,351 NZD
$6,949 USD
View
B+
Retailer 14
-
$12,441 NZD
$7,000 USD
View
B+
Retailer 15
-
$12,459 NZD
€6,676 EUR
View
Retailer 16
-
$12,603 NZD
$7,091 USD
View
Price last confirmed 10 days ago
B+
Retailer 17
-
$16,843 NZD
£7,462 GBP
View
B
Retailer 18
-
$19,120 NZD
$10,758 USD
View
Most Expensive
NZ Jewellers
7aaba094-6183-4942-b78e-fd6fa58c6b60 · Sep 18
$19,120 NZD
$10,758 USD
View
Price last confirmed 45 days ago
18 more retailers have this diamond
Prices start from $9,034 NZDSave up to $10,086 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
$9,034 NZD