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Round|Natural|GIA

1.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 1538258148

Certificate GIA 1538258148

Diamond specifications and retailer prices

From $8,053 NZD
HK$35,400 HKD
As of November 1, 2026
Save $8,966 NZD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $17,577 NZD at NZ Jewellers · As of October 17, 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 1538258148. Listed at 21 retailers as of October 28, 2026, with a 111% 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 angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1538258148
Dimensions7.35 × 7.29 × 4.59 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.35 mm7.29 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1538258148
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

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: $8,558 NZD|Low: $7,985 NZD|High: $17,087 NZD|Avg: $11,294 NZD|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 10$8,053 NZD
Retailer 1$8,558 NZD
Retailer 13$9,176 NZD
Retailer 2$9,231 NZD
Retailer 11$9,429 NZD
Retailer 5$9,701 NZD
Retailer 7$10,184 NZD
Retailer 3$10,362 NZD
Retailer 4$10,786 NZD
Retailer 6$11,157 NZD
Retailer 8$11,432 NZD
Retailer 9$15,482 NZD
Retailer 12$17,019 NZD

30 data points across 13 retailers

21 retailers$8,053 NZD to $17,019 NZD

A
Cheapest Retailer
-
$8,053 NZD
HK$35,400 HKD
A
Retailer 2
-
$8,558 NZD
₹458,610 INR
View
A
Retailer 3
-
$9,176 NZD
SGD 6,977 SGD
View
A
Retailer 4
-
$9,231 NZD
$5,194 USD
View
A
Retailer 5
-
$9,429 NZD
$5,305 USD
View
Retailer 6
-
$9,521 NZD
$5,357 USD
View
Price last confirmed 17 days ago
Retailer 7
-
$9,521 NZD
$5,357 USD
View
Price last confirmed 34 days ago
Retailer 8
-
$9,521 NZD
$5,357 USD
View
Price last confirmed 34 days ago
A
Retailer 9
-
$9,701 NZD
$5,458 USD
View
Final sale: no returns
A
Retailer 10
-
$9,791 NZD
$5,509 USD
View
A
Retailer 11
-
$10,184 NZD
£4,512 GBP
View
A
Retailer 12
-
$10,362 NZD
$5,830 USD
View
A
Retailer 13
-
$10,786 NZD
$6,069 USD
View
Retailer 14
-
$10,985 NZD
$6,181 USD
View
Price last confirmed 34 days ago
A
Retailer 15
-
$11,157 NZD
£4,943 GBP
View
A
Retailer 16
-
$11,432 NZD
€6,126 EUR
View
Retailer 17
-
$11,590 NZD
$6,521 USD
View
Price last confirmed 10 days ago
B+
Retailer 18
-
$15,482 NZD
£6,859 GBP
View
B+
Retailer 19
-
$17,019 NZD
£7,540 GBP
View
Retailer 20
-
$17,577 NZD
$9,890 USD
View
Price last confirmed 35 days ago
Most Expensive
NZ Jewellers
f4f1a7a0-c163-4cbe-a534-8e0fa0e569e3 · Oct 17
$17,577 NZD
$9,890 USD
View
Price last confirmed 16 days ago
20 more retailers have this diamond
Prices start from $8,053 NZDSave up to $8,966 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
$8,053 NZD