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Heart|Natural|GIA

1.21ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 2145498543

Certificate GIA 2145498543

Diamond specifications and retailer prices

From HK$31,412 HKD
As of November 6, 2026
Save HK$31,782 HKD (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$63,195 HKD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded D 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 2145498543. Listed at 13 retailers as of November 4, 2026, with prices from HK$31,412 to HK$63,195, a HK$31,782 spread on the same certified stone. MOH London lists it at HK$63,195. 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

1.21
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2145498543
Dimensions6.59 × 5.54 × 3.75 mm
L/W Ratio1.19
Culet sizeNone
Top View
6.59 mm5.54 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 2145498543
Side View
Table 68.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 67.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$63,195 HKD|Low: HK$30,644 HKD|High: HK$67,174 HKD|Avg: HK$41,119 HKD|-1.3%
MOH London
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
November 7, 2026
Retailer 5HK$31,412 HKD
Retailer 14HK$31,436 HKD
Retailer 3HK$31,671 HKD
Retailer 10HK$32,094 HKD
Retailer 9HK$34,054 HKD
Retailer 12HK$36,044 HKD
Retailer 2HK$39,273 HKD
Retailer 6HK$41,005 HKD
Retailer 11HK$41,170 HKD
Retailer 4HK$43,921 HKD
Retailer 7HK$44,752 HKD
Retailer 8HK$48,537 HKD
Retailer 13HK$57,581 HKD
MOH LondonHK$63,195 HKD

28 data points across 14 retailers

13 retailersHK$31,412 HKD to HK$63,195 HKD

B+
Cheapest Retailer
-
HK$31,412 HKD
B+
Retailer 2
-
HK$31,436 HKD
View
B+
Retailer 3
-
HK$31,671 HKD
View
Final sale: no returns
Retailer 4
-
HK$32,094 HKD
View
Price last confirmed 10 days ago
B
Retailer 5
-
HK$34,054 HKD
View
Retailer 6
-
HK$36,044 HKD
View
Price last confirmed 9 days ago
B
Retailer 7
-
HK$39,273 HKD
View
B
Retailer 8
-
HK$41,170 HKD
View
Retailer 9
-
HK$43,921 HKD
View
Price last confirmed 15 days ago
B
Retailer 10
-
HK$44,752 HKD
View
B
Retailer 11
-
HK$48,537 HKD
View
B
Retailer 12
-
HK$57,581 HKD
View
Most Expensive
B
MOH London
D254C7E99 · Nov 4
HK$63,195 HKD
£6,349 GBP
View
12 more retailers have this diamond
Prices start from HK$31,412 HKDSave up to HK$31,782 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.

B+
1.21ct Heart
HK$31,412 HKD