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Round|Natural|GIA

1.51ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6511657389

Certificate GIA 6511657389

Diamond specifications and retailer prices

From HK$45,493 HKD
As of October 31, 2026
Save HK$40,278 HKD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$105,030 HKD at NZ Jewellers · As of September 25, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6511657389. Listed at 14 retailers as of October 29, 2026, with a 89% 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6511657389
Dimensions7.32 × 7.28 × 4.51 mm
L/W Ratio1.01
Top View
7.32 mm7.28 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6511657389
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.0%

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 31
Current: HK$45,493 HKD|Low: HK$44,287 HKD|High: HK$88,570 HKD|Avg: HK$56,480 HKD|-4.0%
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
October 31, 2026
Retailer 2HK$45,113 HKD
Retailer 1HK$45,493 HKD
Retailer 8HK$46,705 HKD
Retailer 10HK$48,612 HKD
Retailer 13HK$50,588 HKD
Retailer 11HK$51,185 HKD
Retailer 14HK$53,295 HKD
Retailer 7HK$54,697 HKD
Retailer 12HK$54,763 HKD
Retailer 3HK$59,150 HKD
Retailer 6HK$59,962 HKD
Retailer 5HK$63,983 HKD
Retailer 4HK$65,352 HKD
Retailer 9HK$85,770 HKD

38 data points across 14 retailers

14 retailersHK$45,493 HKD to HK$85,770 HKD

Retailer 1
-
HK$45,113 HKD
$5,750 USD
Price last confirmed 10 days ago
A
Retailer 2
-
HK$45,493 HKD
View
A
Retailer 3
-
HK$46,705 HKD
$5,953 USD
View
A
Retailer 4
-
HK$48,612 HKD
$6,196 USD
View
A
Retailer 5
-
HK$50,588 HKD
$6,448 USD
View
A
Retailer 6
-
HK$51,185 HKD
$6,524 USD
View
Final sale: no returns
A
Retailer 7
-
HK$53,295 HKD
$6,793 USD
View
A
Retailer 8
-
HK$54,697 HKD
£5,489 GBP
View
A
Retailer 9
-
HK$54,763 HKD
$6,980 USD
View
A
Retailer 10
-
HK$59,150 HKD
SGD 10,188 SGD
View
A
Retailer 11
-
HK$59,962 HKD
A$11,758 AUD
View
Retailer 12
-
HK$63,983 HKD
$8,155 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
HK$85,770 HKD
£8,608 GBP
View
Most Expensive
NZ Jewellers
67d7e602-8786-4201-9a30-7eff39b7dc82 · Sep 25
HK$105,030 HKD
$13,387 USD
View
Price last confirmed 36 days ago
13 more retailers have this diamond
Prices start from HK$45,493 HKDSave up to HK$40,278 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$45,493 HKD