Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1555561780

Certificate GIA 1555561780

Diamond specifications and retailer prices

From HK$52,598 HKD
$6,704 USD
As of October 29, 2026
6 retailers carry this diamond
Most expensive: HK$64,201 HKD at The Perfect Carat · As of September 29, 2026
View at The Perfect Carat

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555561780. Listed at 6 retailers as of October 29, 2026. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555561780
Dimensions7.24 × 7.29 × 4.56 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle
Top View
7.24 mm7.29 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555561780
Side View
Table 58.0%CrownGirdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: HK$51,213 HKD|Low: HK$44,990 HKD|High: HK$90,204 HKD|Avg: HK$59,846 HKD|-18.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 22, 2026
Retailer 5HK$44,990 HKD
Retailer 1HK$51,213 HKD
Retailer 6HK$52,444 HKD
Retailer 2HK$52,598 HKD
Retailer 3HK$67,288 HKD
Retailer 4HK$86,568 HKD

25 data points across 6 retailers

6 retailers

Retailer 1
-
HK$44,990 HKD
Price last confirmed 7 days ago
Retailer 2
-
HK$51,213 HKD
€6,217 EUR
View
Price last confirmed 8 days ago
Retailer 3
-
HK$52,444 HKD
SGD 9,033 SGD
View
Price last confirmed 22 days ago
A
Retailer 4
-
HK$52,598 HKD
$6,704 USD
View
Retailer 5
-
HK$62,507 HKD
$7,967 USD
View
Price last confirmed 23 days ago
Most Expensive
The Perfect Carat
tpc_f6a4e049-9738-4e80-b743-4f6da669d118 · Sep 29
HK$64,201 HKD
$8,183 USD
View
Price last confirmed 31 days ago
5 more retailers have this diamond
Prices start from HK$52,598 HKD

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
HK$52,598 HKD