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Heart|Natural|GIA

1.51ct F SI1 Heart Natural Diamond

FR • F/SI1 • GIA 1545335980

Certificate GIA 1545335980

Diamond specifications and retailer prices

From HK$28,351 HKD
SGD 4,883 SGD
As of October 31, 2026
Save HK$38,381 HKD (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$70,074 HKD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1545335980. Listed at 7 retailers as of October 31, 2026, with a 135% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Fair
Cut (retailer stated)

Specifications

Cut (retailer stated)Fair
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545335980
Dimensions7.51 × 6.69 × 4.86 mm
L/W Ratio1.12
Key to symbols
Feather, Indented Natural
Top View
7.51 mm6.69 mm1.51 ctF / SI1
OriginNatural
CutFair
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545335980
Side View
Table 59.0%CrownGirdle: Very ThickPavilionCulet: NDepth 64.7%

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 31
Current: HK$66,733 HKD|Low: HK$25,100 HKD|High: HK$71,396 HKD|Avg: HK$43,221 HKD|-5.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3HK$28,351 HKD
Retailer 10HK$34,735 HKD
Retailer 2HK$35,817 HKD
Retailer 8HK$37,167 HKD
Retailer 4HK$38,674 HKD
Retailer 9HK$39,305 HKD
Retailer 7HK$41,514 HKD
Retailer 5HK$41,812 HKD
Retailer 6HK$57,245 HKD
Retailer 1HK$66,733 HKD

25 data points across 10 retailers

7 retailersHK$28,351 HKD to HK$66,733 HKD

A
Cheapest Retailer
-
HK$28,351 HKD
SGD 4,883 SGD
B+
Retailer 2
-
HK$38,674 HKD
$4,929 USD
View
B+
Retailer 3
-
HK$41,812 HKD
$5,329 USD
View
Retailer 4
-
HK$41,898 HKD
$5,340 USD
View
Price last confirmed 17 days ago
Retailer 5
-
HK$41,898 HKD
$5,340 USD
View
Price last confirmed 15 days ago
C
Retailer 6
-
HK$66,733 HKD
£6,697 GBP
View
Most Expensive
NZ Jewellers
d14b72df-1e22-4eab-a89e-616233642b41 · Oct 18
HK$70,074 HKD
$8,931 USD
View
Price last confirmed 16 days ago
6 more retailers have this diamond
Prices start from HK$28,351 HKDSave up to HK$38,381 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 Heart
HK$28,351 HKD