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Heart|Natural|GIA

0.90ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 1553551358

Certificate GIA 1553551358

Diamond specifications and retailer prices

From HK$8,834 HKD
$1,126 USD
As of November 1, 2026
Save HK$14,603 HKD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$29,429 HKD at NZ Jewellers · As of October 21, 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 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 1553551358. Listed at 15 retailers as of November 1, 2026, with a 165% 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553551358
Dimensions6.79 × 5.77 × 4.03 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Cavity, Needle, Indented Natural
Top View
6.79 mm5.77 mm0.90 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553551358
Side View
Table 64.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 59.3%

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 1
Current: HK$29,429 HKD|Low: HK$8,411 HKD|High: HK$29,429 HKD|Avg: HK$14,738 HKD
NZ Jewellers
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
Retailer 15
Retailer 16
November 2, 2026
Retailer 6HK$8,834 HKD
Retailer 5HK$9,689 HKD
Retailer 3HK$10,090 HKD
Retailer 7HK$10,435 HKD
Retailer 4HK$10,929 HKD
Retailer 16HK$10,929 HKD
Retailer 15HK$12,608 HKD
Retailer 12HK$13,102 HKD
Retailer 13HK$13,102 HKD
Retailer 14HK$13,573 HKD
Retailer 8HK$15,003 HKD
Retailer 9HK$16,624 HKD
Retailer 11HK$17,965 HKD
Retailer 10HK$21,343 HKD
Retailer 2HK$23,438 HKD
NZ JewellersHK$29,429 HKD

36 data points across 16 retailers

15 retailersHK$8,834 HKD to HK$23,438 HKD

A
Cheapest Retailer
-
HK$8,834 HKD
$1,126 USD
A
Retailer 2
-
HK$9,689 HKD
$1,235 USD
View
B+
Retailer 3
-
HK$10,435 HKD
$1,330 USD
View
Retailer 4
-
HK$10,929 HKD
$1,393 USD
View
Price last confirmed 13 days ago
Retailer 5
-
HK$11,431 HKD
$1,457 USD
View
Price last confirmed 16 days ago
Retailer 6
-
HK$12,608 HKD
$1,607 USD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
HK$13,102 HKD
$1,670 USD
View
B+
Retailer 8
-
HK$13,102 HKD
$1,670 USD
View
B
Retailer 9
-
HK$13,573 HKD
$1,730 USD
View
B+
Retailer 10
-
HK$15,003 HKD
$1,912 USD
View
B
Retailer 11
-
HK$16,624 HKD
€2,018 EUR
View
B
Retailer 12
-
HK$17,965 HKD
ZAR 36,992 ZAR
View
B
Retailer 13
-
HK$21,343 HKD
£2,142 GBP
View
B
Retailer 14
-
HK$23,438 HKD
£2,352 GBP
View
Most Expensive
NZ Jewellers
9d6be2f3-980b-4fc7-bfbf-4f350b0fe006 · Oct 21
HK$29,429 HKD
$3,751 USD
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from HK$8,834 HKDSave up to HK$14,603 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$8,834 HKD