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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 $1,126 USD
As of November 1, 2026
Save $1,861 USD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,751 USD 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
Color
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: $3,751 USD|Low: $1,072 USD|High: $3,751 USD|Avg: $1,879 USD
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 6$1,126 USD
Retailer 5$1,235 USD
Retailer 3$1,286 USD
Retailer 7$1,330 USD
Retailer 4$1,393 USD
Retailer 16$1,393 USD
Retailer 15$1,607 USD
Retailer 12$1,670 USD
Retailer 13$1,670 USD
Retailer 14$1,730 USD
Retailer 8$1,912 USD
Retailer 9$2,119 USD
Retailer 11$2,290 USD
Retailer 10$2,720 USD
Retailer 2$2,987 USD
NZ Jewellers$3,751 USD

36 data points across 16 retailers

15 retailers$1,126 USD to $2,987 USD

A
Cheapest Retailer
-
$1,126 USD
A
Retailer 2
-
$1,235 USD
View
B+
Retailer 3
-
$1,330 USD
View
Retailer 4
-
$1,393 USD
View
Price last confirmed 13 days ago
Retailer 5
-
$1,457 USD
View
Price last confirmed 16 days ago
Retailer 6
-
$1,607 USD
View
Price last confirmed 12 days ago
B+
Retailer 7
-
$1,670 USD
View
B+
Retailer 8
-
$1,670 USD
View
B
Retailer 9
-
$1,730 USD
View
B+
Retailer 10
-
$1,912 USD
View
B
Retailer 11
-
$2,119 USD
€2,018 EUR
View
B
Retailer 12
-
$2,290 USD
ZAR 36,992 ZAR
View
B
Retailer 13
-
$2,720 USD
£2,142 GBP
View
B
Retailer 14
-
$2,987 USD
£2,352 GBP
View
Most Expensive
NZ Jewellers
9d6be2f3-980b-4fc7-bfbf-4f350b0fe006 · Oct 21
$3,751 USD
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from $1,126 USDSave up to $1,861 USD

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
$1,126 USD