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Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6535460829

Certificate GIA 6535460829

Diamond specifications and retailer prices

From $4,293 NZD
As of November 4, 2026
Save $13,507 NZD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $17,800 NZD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6535460829. Listed at 16 retailers as of November 4, 2026, with prices from $4,293 to $17,800, a $13,507 spread on the same certified stone. Wholesale Diamonds Direct lists it at $17,800. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6535460829
Dimensions7.38 × 7.33 × 4.55 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
7.38 mm7.33 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535460829
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.8%

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 4
Current: $12,595 NZD|Low: $4,293 NZD|High: $17,800 NZD|Avg: $8,962 NZD|-0.3%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Wholesale Diamonds Direct
November 6, 2026
Retailer 15$4,293 NZD
Retailer 7$4,815 NZD
Retailer 13$4,991 NZD
Retailer 14$5,184 NZD
Retailer 6$5,190 NZD
Retailer 8$5,644 NZD
Retailer 16$5,760 NZD
Retailer 9$9,106 NZD
Retailer 17$10,356 NZD
Retailer 10$10,390 NZD
Retailer 12$10,437 NZD
Retailer 18$11,586 NZD
Retailer 2$11,733 NZD
Retailer 3$12,393 NZD
Retailer 4$12,393 NZD
Retailer 11$12,561 NZD
Retailer 1$12,595 NZD
Retailer 5$12,808 NZD
Wholesale Diamonds Direct$17,800 NZD

28 data points across 19 retailers

16 retailers$4,293 NZD to $17,800 NZD

A
Cheapest Retailer
-
$4,293 NZD
A
Retailer 2
-
$4,815 NZD
View
A
Retailer 3
-
$4,991 NZD
View
A
Retailer 4
-
$5,184 NZD
View
Retailer 5
-
$5,190 NZD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$5,760 NZD
View
B+
Retailer 7
-
$10,356 NZD
View
B+
Retailer 8
-
$10,437 NZD
View
B+
Retailer 9
-
$11,586 NZD
View
B+
Retailer 10
-
$11,733 NZD
View
B
Retailer 11
-
$12,393 NZD
View
B
Retailer 12
-
$12,393 NZD
View
B+
Retailer 13
-
$12,561 NZD
View
B+
Retailer 14
-
$12,595 NZD
View
B
Retailer 15
-
$12,808 NZD
View
Most Expensive
B
Wholesale Diamonds Direct
623164163 · Nov 6
$17,800 NZD
$9,868 USD
View
15 more retailers have this diamond
Prices start from $4,293 NZDSave up to $13,507 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
$4,293 NZD