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1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5566171647

Certificate GIA 5566171647

Diamond specifications and retailer prices

From $8,897 NZD
As of November 5, 2026
Save $8,926 NZD (50%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $17,823 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5566171647. Listed at 9 retailers as of November 5, 2026, with prices from $8,897 to $17,823, a $8,926 spread on the same certified stone. Wholesale Diamonds Direct lists it at $17,823. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5566171647
Dimensions7.27 × 4.55 × 4.55 mm
L/W Ratio1.60
Culet sizeNone
Top View
7.27 mm4.55 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5566171647
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.4%

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 5
Current: $10,427 NZD|Low: $8,846 NZD|High: $19,077 NZD|Avg: $12,872 NZD|-6.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 6, 2026
Retailer 3$8,897 NZD
Retailer 8$9,631 NZD
Retailer 1$10,427 NZD
Retailer 5$10,813 NZD
Retailer 4$12,169 NZD
Retailer 7$12,169 NZD
Retailer 2$13,656 NZD
Retailer 6$16,603 NZD
Wholesale Diamonds Direct$17,823 NZD

34 data points across 9 retailers

9 retailers$8,897 NZD to $17,823 NZD

A
Cheapest Retailer
-
$8,897 NZD
A
Retailer 2
-
$9,631 NZD
View
A
Retailer 3
-
$10,427 NZD
View
B+
Retailer 4
-
$10,813 NZD
View
B+
Retailer 5
-
$12,169 NZD
View
B+
Retailer 6
-
$12,169 NZD
View
B+
Retailer 7
-
$13,656 NZD
View
B
Retailer 8
-
$16,603 NZD
View
Most Expensive
B
Wholesale Diamonds Direct
378293298 · Nov 6
$17,823 NZD
$9,880 USD
View
8 more retailers have this diamond
Prices start from $8,897 NZDSave up to $8,926 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
$8,897 NZD