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Heart|Natural|GIA

0.90ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 6531902121

Certificate GIA 6531902121

Diamond specifications and retailer prices

From HK$9,139 HKD
As of October 30, 2026
Save HK$6,303 HKD (41%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$30,841 HKD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.9ct natural heart diamond

This 0.9ct natural heart sits in the just-under-one-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 6531902121. Listed at 15 retailers as of October 30, 2026, with a 69% 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

0.90
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle37.9°
OriginNatural
Grading LabGIA
CertificateGIA 6531902121
Dimensions5.68 × 6.64 × 3.96 mm
L/W Ratio1.17
Top View
5.68 mm6.64 mm0.90 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531902121
Side View
Table 58.0%CrownGirdle: MED-THKPavilion 37.9°Culet: NoneDepth 59.6%

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 30
Current: HK$11,874 HKD|Low: HK$8,837 HKD|High: HK$22,180 HKD|Avg: HK$13,943 HKD|-11.9%
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
October 30, 2026
Retailer 8HK$9,139 HKD
Retailer 6HK$11,050 HKD
Retailer 12HK$11,110 HKD
Retailer 7HK$11,196 HKD
Retailer 1HK$11,874 HKD
Retailer 10HK$12,161 HKD
Retailer 2HK$12,749 HKD
Retailer 11HK$12,767 HKD
Retailer 13HK$13,783 HKD
Retailer 4HK$15,715 HKD
Retailer 5HK$17,039 HKD
Retailer 9HK$18,269 HKD
Retailer 3HK$21,293 HKD

34 data points across 13 retailers

15 retailersHK$9,139 HKD to HK$15,442 HKD

A
Cheapest Retailer
-
HK$9,139 HKD
A
Retailer 2
-
HK$11,050 HKD
€1,341 EUR
View
A
Retailer 3
-
HK$11,110 HKD
$1,416 USD
View
Final sale: no returns
A
Retailer 4
-
HK$11,196 HKD
$1,427 USD
View
A
Retailer 5
-
HK$11,212 HKD
$1,429 USD
View
A
Retailer 6
-
HK$11,874 HKD
£1,192 GBP
View
B+
Retailer 7
-
HK$12,161 HKD
$1,550 USD
View
Retailer 8
-
HK$12,767 HKD
SGD 2,199 SGD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
HK$13,783 HKD
SGD 2,374 SGD
View
B+
Retailer 10
-
HK$15,442 HKD
A$3,028 AUD
View
Retailer 11
-
HK$15,715 HKD
A$3,082 AUD
View
Price last confirmed 25 days ago
Retailer 12
-
HK$17,039 HKD
ZAR 35,084 ZAR
View
Price last confirmed 26 days ago
Retailer 13
-
HK$18,269 HKD
$2,328 USD
View
Price last confirmed 7 days ago
Retailer 14
-
HK$21,293 HKD
£2,137 GBP
View
Price last confirmed 23 days ago
Most Expensive
NZ Jewellers
73da8a21-f709-44d2-ae13-d586207141f0 · Sep 25
HK$30,841 HKD
$3,931 USD
View
Price last confirmed 35 days ago
14 more retailers have this diamond
Prices start from HK$9,139 HKDSave up to HK$6,303 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
0.90ct Heart
HK$9,139 HKD