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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6552766733

Certificate GIA 6552766733

Diamond specifications and retailer prices

From $4,694 SGD
HK$28,600 HKD
As of October 29, 2026
Save $6,567 SGD (58%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $11,261 SGD at NZ Jewellers · As of October 27, 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 27, 2026, with prices from $4,694 to $11,261, a $6,567 spread on the same certified stone. NZ Jewellers lists it at $11,261. 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
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: Oct 29
Current: $11,261 SGD|Low: $4,694 SGD|High: $11,261 SGD|Avg: $7,279 SGD|+2.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 5$4,694 SGD
Retailer 6$6,034 SGD
Retailer 3$6,463 SGD
Retailer 7$6,463 SGD
Retailer 8$6,799 SGD
Retailer 4$7,388 SGD
Retailer 2$10,349 SGD
NZ Jewellers$11,261 SGD

34 data points across 8 retailers

8 retailers$4,694 SGD to $11,261 SGD

A
Cheapest Retailer
-
$4,694 SGD
HK$28,600 HKD
A
Retailer 2
-
$6,034 SGD
View
A
Retailer 3
-
$6,463 SGD
$5,041 USD
View
A
Retailer 4
-
$6,463 SGD
$5,041 USD
View
B+
Retailer 5
-
$6,799 SGD
A$8,158 AUD
View
B+
Retailer 6
-
$7,388 SGD
€5,488 EUR
View
B+
Retailer 7
-
$10,349 SGD
£6,356 GBP
View
Most Expensive
B
NZ Jewellers
c03762c3-f48b-41c4-9653-c5276a21c282 · Oct 27
$11,261 SGD
$8,783 USD
View
7 more retailers have this diamond
Prices start from $4,694 SGDSave up to $6,567 SGD

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
$4,694 SGD