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1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6552766733

Certificate GIA 6552766733

Diamond specifications and retailer prices

From $3,699 USD
HK$28,900 HKD
As of November 1, 2026
Save $5,084 USD (58%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,783 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552766733. Listed at 8 retailers as of October 30, 2026, with prices from $3,699 to $8,783, a $5,084 spread on the same certified stone. NZ Jewellers lists it at $8,783. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6552766733
Dimensions7.25 × 7.31 × 4.55 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud, Feather, Needle, Natural
Top View
7.25 mm7.31 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6552766733
Side View
Table 59.0%CrownGirdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

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: $8,783 USD|Low: $3,661 USD|High: $9,160 USD|Avg: $5,994 USD|-4.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 4$3,699 USD
Retailer 6$4,706 USD
Retailer 5$5,041 USD
Retailer 7$5,041 USD
Retailer 8$5,303 USD
Retailer 3$5,768 USD
Retailer 2$8,029 USD
NZ Jewellers$8,783 USD

36 data points across 8 retailers

8 retailers$3,699 USD to $8,783 USD

A
Cheapest Retailer
-
$3,699 USD
HK$28,900 HKD
A
Retailer 2
-
$4,706 USD
SGD 6,360 SGD
View
A
Retailer 3
-
$5,041 USD
View
A
Retailer 4
-
$5,041 USD
View
B+
Retailer 5
-
$5,303 USD
A$8,158 AUD
View
B+
Retailer 6
-
$5,768 USD
€5,493 EUR
View
B+
Retailer 7
-
$8,029 USD
£6,322 GBP
View
Most Expensive
B
NZ Jewellers
c03762c3-f48b-41c4-9653-c5276a21c282 · Oct 30
$8,783 USD
View
7 more retailers have this diamond
Prices start from $3,699 USDSave up to $5,084 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
$3,699 USD