Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1543994919

Certificate GIA 1543994919

Diamond specifications and retailer prices

From HK$57,784 HKD
$7,365 USD
As of October 30, 2026
Save HK$49,001 HKD (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$132,255 HKD at NZ Jewellers · As of September 28, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1543994919. Listed at 19 retailers as of October 29, 2026, with a 85% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1543994919
Dimensions7.28 × 7.31 × 4.57 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.28 mm7.31 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1543994919
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.7%

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 30
Current: HK$60,622 HKD|Low: HK$52,456 HKD|High: HK$107,353 HKD|Avg: HK$72,650 HKD|+15.6%
Retailer 1
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
Retailer 15
Retailer 16
October 30, 2026
Retailer 15HK$57,784 HKD
Retailer 4HK$59,674 HKD
Retailer 1HK$60,622 HKD
Retailer 16HK$61,377 HKD
Retailer 3HK$63,432 HKD
Retailer 5HK$63,731 HKD
Retailer 2HK$67,923 HKD
Retailer 7HK$70,211 HKD
Retailer 12HK$70,410 HKD
Retailer 9HK$70,678 HKD
Retailer 10HK$70,721 HKD
Retailer 6HK$71,323 HKD
Retailer 14HK$77,238 HKD
Retailer 8HK$84,934 HKD
Retailer 13HK$91,974 HKD
Retailer 11HK$106,785 HKD

33 data points across 16 retailers

19 retailersHK$57,784 HKD to HK$106,785 HKD

A
Cheapest Retailer
-
HK$57,784 HKD
$7,365 USD
A
Retailer 2
-
HK$59,674 HKD
$7,606 USD
View
A
Retailer 3
-
HK$60,622 HKD
$7,727 USD
View
A
Retailer 4
-
HK$61,377 HKD
$7,823 USD
View
A
Retailer 5
-
HK$63,432 HKD
$8,085 USD
View
B+
Retailer 6
-
HK$63,731 HKD
$8,123 USD
View
Final sale: no returns
B+
Retailer 7
-
HK$67,923 HKD
$8,657 USD
View
Retailer 8
-
HK$70,211 HKD
$8,949 USD
View
Price last confirmed 7 days ago
Retailer 9
-
HK$70,410 HKD
A$13,807 AUD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
HK$70,678 HKD
£7,093 GBP
View
B+
Retailer 11
-
HK$70,721 HKD
$9,014 USD
View
B+
Retailer 12
-
HK$71,323 HKD
$9,091 USD
View
Retailer 13
-
HK$71,639 HKD
$9,131 USD
View
Price last confirmed 32 days ago
B+
Retailer 14
-
HK$77,238 HKD
$9,845 USD
View
Retailer 15
-
HK$82,662 HKD
$10,536 USD
View
Price last confirmed 60 days ago
Retailer 16
-
HK$82,662 HKD
$10,536 USD
View
Price last confirmed 32 days ago
Retailer 17
-
HK$91,974 HKD
ZAR 189,383 ZAR
View
Price last confirmed 8 days ago
B
Retailer 18
-
HK$106,785 HKD
£10,717 GBP
View
Most Expensive
NZ Jewellers
5239c466-c2e3-4e18-a2db-1163951c3b6d · Sep 28
HK$132,255 HKD
$16,857 USD
View
Price last confirmed 32 days ago
18 more retailers have this diamond
Prices start from HK$57,784 HKDSave up to HK$49,001 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$57,784 HKD