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Heart|Natural|GIA

0.90ct H SI1 Heart Natural Diamond

ID • H/SI1 • GIA 1553181188

Certificate GIA 1553181188

Diamond specifications and retailer prices

From $1,728 NZD
$972 USD
As of November 1, 2026
Save $2,718 NZD (61%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,581 NZD 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 H 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 1553181188. Listed at 15 retailers as of November 1, 2026, with a 157% 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
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553181188
Dimensions6.66 × 5.72 × 4.01 mm
L/W Ratio1.16
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Needle, Indented Natural
Top View
6.66 mm5.72 mm0.90 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553181188
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 60.3%

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: $5,581 NZD|Low: $1,893 NZD|High: $5,581 NZD|Avg: $3,034 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 3$1,893 NZD
Retailer 8$2,072 NZD
Retailer 12$2,072 NZD
Retailer 10$2,152 NZD
Retailer 9$2,392 NZD
Retailer 4$2,506 NZD
Retailer 11$2,759 NZD
Retailer 6$3,225 NZD
Retailer 7$3,384 NZD
Retailer 2$4,232 NZD
Retailer 5$4,445 NZD
NZ Jewellers$5,581 NZD

39 data points across 12 retailers

15 retailers$1,728 NZD to $4,445 NZD

A
Cheapest Retailer
-
$1,728 NZD
$972 USD
A
Retailer 2
-
$1,893 NZD
$1,065 USD
View
A
Retailer 3
-
$1,937 NZD
$1,090 USD
View
Retailer 4
-
$2,072 NZD
$1,166 USD
View
Price last confirmed 11 days ago
Retailer 5
-
$2,152 NZD
$1,211 USD
View
Price last confirmed 11 days ago
Retailer 6
-
$2,392 NZD
$1,346 USD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
$2,506 NZD
$1,410 USD
View
B+
Retailer 8
-
$2,506 NZD
$1,410 USD
View
B+
Retailer 9
-
$2,595 NZD
$1,460 USD
View
Retailer 10
-
$2,759 NZD
£1,222 GBP
View
Price last confirmed 37 days ago
B+
Retailer 11
-
$3,225 NZD
€1,728 EUR
View
B+
Retailer 12
-
$3,384 NZD
ZAR 30,756 ZAR
View
B
Retailer 13
-
$4,232 NZD
£1,875 GBP
View
B
Retailer 14
-
$4,445 NZD
£1,969 GBP
View
Most Expensive
NZ Jewellers
f573e1a2-dde6-4659-83aa-2f1f2cf0e659 · Oct 21
$5,581 NZD
$3,140 USD
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from $1,728 NZDSave up to $2,718 NZD

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
$1,728 NZD