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Round|Natural|GIA

1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5546985835

Certificate GIA 5546985835

Diamond specifications and retailer prices

From $4,093 NZD
As of November 6, 2026
Save $11,271 NZD (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $15,365 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5546985835. Listed at 18 retailers as of November 6, 2026, with prices from $4,093 to $15,365, a $11,271 spread on the same certified stone. Wholesale Diamonds Direct lists it at $15,365. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 5546985835
Dimensions7.27 × 7.32 × 4.58 mm
L/W Ratio1.01
Top View
7.27 mm7.32 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546985835
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.3%

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 6
Current: $4,093 NZD|Low: $4,093 NZD|High: $9,442 NZD|Avg: $5,966 NZD|-2.7%
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
November 6, 2026
Retailer 1$4,093 NZD
Retailer 13$4,855 NZD
Retailer 12$4,856 NZD
Retailer 3$5,193 NZD
Retailer 2$5,420 NZD
Retailer 4$5,420 NZD
Retailer 7$5,420 NZD
Retailer 5$5,628 NZD
Retailer 8$5,669 NZD
Retailer 6$5,673 NZD
Retailer 9$5,931 NZD
Retailer 15$6,253 NZD
Retailer 10$6,614 NZD
Retailer 11$9,039 NZD
Retailer 14$9,442 NZD

32 data points across 15 retailers

18 retailers$4,093 NZD to $15,365 NZD

A
Cheapest Retailer
-
$4,093 NZD
A
Retailer 2
-
$4,855 NZD
View
A
Retailer 3
-
$4,856 NZD
View
A
Retailer 4
-
$5,193 NZD
View
Retailer 5
-
$5,374 NZD
View
Price last confirmed 60 days ago
A
Retailer 6
-
$5,420 NZD
View
Retailer 7
-
$5,420 NZD
View
Price last confirmed 12 days ago
A
Retailer 8
-
$5,420 NZD
View
A
Retailer 9
-
$5,628 NZD
View
A
Retailer 10
-
$5,669 NZD
View
A
Retailer 11
-
$5,673 NZD
View
A
Retailer 12
-
$5,931 NZD
View
Retailer 13
-
$6,199 NZD
View
Price last confirmed 60 days ago
A
Retailer 14
-
$6,253 NZD
View
A
Retailer 15
-
$6,614 NZD
View
B+
Retailer 16
-
$9,039 NZD
View
B
Retailer 17
-
$9,442 NZD
View
Most Expensive
B
Wholesale Diamonds Direct
44512617 · Nov 6
$15,365 NZD
$8,637 USD
View
17 more retailers have this diamond
Prices start from $4,093 NZDSave up to $11,271 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
$4,093 NZD