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Heart|Natural|GIA

1.28ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 1505137931

Certificate GIA 1505137931

Diamond specifications and retailer prices

From HK$19,468 HKD
As of November 6, 2026
Save HK$18,624 HKD (49%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$38,092 HKD at MOH London · As of November 2, 2026
View at MOH London

About this 1.28ct natural heart diamond

This 1.28ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1505137931. Listed at 11 retailers as of November 2, 2026, with prices from HK$19,468 to HK$38,092, a HK$18,624 spread on the same certified stone. MOH London lists it at HK$38,092. 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

1.28
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1505137931
Dimensions6.52 × 6.18 × 3.97 mm
L/W Ratio1.06
Cert comments
Clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Feather, Needle
Top View
6.52 mm6.18 mm1.28 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateGIA 1505137931
Side View
Table 61.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 64.3%

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: Nov 6
Current: HK$38,092 HKD|Low: HK$18,042 HKD|High: HK$39,008 HKD|Avg: HK$24,760 HKD|-2.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8HK$19,468 HKD
Retailer 10HK$20,064 HKD
Retailer 2HK$20,887 HKD
Retailer 11HK$20,973 HKD
Retailer 7HK$21,357 HKD
Retailer 6HK$21,365 HKD
Retailer 9HK$22,007 HKD
Retailer 4HK$25,064 HKD
Retailer 3HK$25,816 HKD
Retailer 5HK$26,530 HKD
MOH LondonHK$38,092 HKD

35 data points across 11 retailers

11 retailersHK$19,468 HKD to HK$38,092 HKD

A
Cheapest Retailer
-
HK$19,468 HKD
A
Retailer 2
-
HK$20,064 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$20,887 HKD
View
A
Retailer 4
-
HK$20,973 HKD
View
A
Retailer 5
-
HK$21,357 HKD
View
A
Retailer 6
-
HK$21,365 HKD
View
A
Retailer 7
-
HK$22,007 HKD
View
A
Retailer 8
-
HK$25,064 HKD
View
Retailer 9
-
HK$25,816 HKD
View
Price last confirmed 30 days ago
A
Retailer 10
-
HK$26,530 HKD
View
Most Expensive
B+
MOH London
9571DD178 · Nov 2
HK$38,092 HKD
£3,827 GBP
View
10 more retailers have this diamond
Prices start from HK$19,468 HKDSave up to HK$18,624 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
1.28ct Heart
HK$19,468 HKD