Round|Natural|GIA

1.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1559762644

Certificate GIA 1559762644

Diamond specifications and retailer prices

From $4,818 USD
As of October 30, 2026
Save $5,848 USD (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,666 USD at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559762644. Listed at 20 retailers as of October 30, 2026, with prices from $4,818 to $10,666, a $5,848 spread on the same certified stone. NZ Jewellers lists it at $10,666. 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1559762644
Dimensions7.28 × 7.33 × 4.56 mm
L/W Ratio1.01
Culet sizeNone
Top View
7.28 mm7.33 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559762644
Side View
Table 59.0%Crown 36°Girdle: STK-STKPavilion 41°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $10,666 USD|Low: $4,818 USD|High: $10,666 USD|Avg: $6,787 USD|+17.3%
NZ Jewellers
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
October 30, 2026
Retailer 7$4,818 USD
Retailer 6$5,039 USD
Retailer 14$5,065 USD
Retailer 5$5,333 USD
Retailer 3$5,778 USD
Retailer 12$5,778 USD
Retailer 13$5,778 USD
Retailer 9$6,077 USD
Retailer 4$6,666 USD
Retailer 2$6,969 USD
Retailer 8$7,725 USD
Retailer 10$9,446 USD
Retailer 11$9,957 USD
NZ Jewellers$10,666 USD

22 data points across 14 retailers

20 retailers$4,818 USD to $10,666 USD

A
Cheapest Retailer
-
$4,818 USD
A
Retailer 2
-
$5,039 USD
View
A
Retailer 3
-
$5,065 USD
View
B+
Retailer 4
-
$5,333 USD
View
Final sale: no returns
B+
Retailer 5
-
$5,703 USD
View
B+
Retailer 6
-
$5,778 USD
View
B+
Retailer 7
-
$5,778 USD
View
B+
Retailer 8
-
$5,778 USD
View
B+
Retailer 9
-
$5,807 USD
View
B+
Retailer 10
-
$6,077 USD
£4,785 GBP
View
B+
Retailer 11
-
$6,200 USD
View
B+
Retailer 12
-
$6,200 USD
View
B+
Retailer 13
-
$6,400 USD
View
B+
Retailer 14
-
$6,666 USD
View
B+
Retailer 15
-
$6,969 USD
€6,637 EUR
View
Retailer 16
-
$7,033 USD
View
Price last confirmed 16 days ago
B+
Retailer 17
-
$7,725 USD
£6,083 GBP
View
B
Retailer 18
-
$9,446 USD
£7,438 GBP
View
B
Retailer 19
-
$9,957 USD
£7,840 GBP
View
Most Expensive
B
NZ Jewellers
acae055a-3203-40ce-bc1b-966d8c4cac9b · Oct 30
$10,666 USD
View
19 more retailers have this diamond
Prices start from $4,818 USDSave up to $5,848 USD

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
$4,818 USD