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Heart|Natural|GIA

1.20ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 3535557448

Certificate GIA 3535557448

Diamond specifications and retailer prices

From HK$13,418 HKD
As of November 5, 2026
Save HK$2,665 HKD (17%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: HK$16,082 HKD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3535557448. Listed at 4 retailers as of November 5, 2026, with prices from HK$13,418 to HK$16,082, a HK$2,665 spread on the same certified stone. Blue Nile lists it at HK$16,082. 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

1.20
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3535557448
Dimensions6.57 × 7.35 × 4.33 mm
L/W Ratio1.12
Top View
6.57 mm7.35 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 3535557448
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.8%

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 5
Current: HK$16,082 HKD|Low: HK$13,418 HKD|High: HK$20,009 HKD|Avg: HK$16,628 HKD|-19.6%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 3HK$13,418 HKD
Retailer 2HK$14,499 HKD
Retailer 4HK$15,291 HKD
Blue NileHK$16,082 HKD
Retailer 5HK$18,802 HKD

40 data points across 5 retailers

4 retailersHK$13,418 HKD to HK$16,082 HKD

A
Cheapest Retailer
-
HK$13,418 HKD
A
Retailer 2
-
HK$14,499 HKD
View
A
Retailer 3
-
HK$15,291 HKD
View
Most Expensive
B+
Blue Nile
26742561 · Nov 5
HK$16,082 HKD
$2,052 USD
View
3 more retailers have this diamond
Prices start from HK$13,418 HKDSave up to HK$2,665 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
1.20ct Heart
HK$13,418 HKD