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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 $2,067 NZD
HK$9,100 HKD
As of October 30, 2026
Save $1,425 NZD (41%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,975 NZD 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: $2,685 NZD|Low: $1,999 NZD|High: $5,016 NZD|Avg: $3,153 NZD|-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 8$2,067 NZD
Retailer 6$2,499 NZD
Retailer 12$2,512 NZD
Retailer 7$2,532 NZD
Retailer 1$2,685 NZD
Retailer 10$2,750 NZD
Retailer 2$2,883 NZD
Retailer 11$2,887 NZD
Retailer 13$3,117 NZD
Retailer 4$3,554 NZD
Retailer 5$3,853 NZD
Retailer 9$4,131 NZD
Retailer 3$4,815 NZD

34 data points across 13 retailers

15 retailers$2,067 NZD to $3,492 NZD

A
Cheapest Retailer
-
$2,067 NZD
HK$9,100 HKD
A
Retailer 2
-
$2,499 NZD
€1,341 EUR
View
A
Retailer 3
-
$2,512 NZD
$1,416 USD
View
Final sale: no returns
A
Retailer 4
-
$2,532 NZD
$1,427 USD
View
A
Retailer 5
-
$2,535 NZD
$1,429 USD
View
A
Retailer 6
-
$2,685 NZD
£1,192 GBP
View
B+
Retailer 7
-
$2,750 NZD
$1,550 USD
View
Retailer 8
-
$2,887 NZD
SGD 2,199 SGD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$3,117 NZD
SGD 2,374 SGD
View
B+
Retailer 10
-
$3,492 NZD
A$3,028 AUD
View
Retailer 11
-
$3,554 NZD
A$3,082 AUD
View
Price last confirmed 26 days ago
Retailer 12
-
$3,853 NZD
ZAR 35,084 ZAR
View
Price last confirmed 27 days ago
Retailer 13
-
$4,131 NZD
$2,328 USD
View
Price last confirmed 8 days ago
Retailer 14
-
$4,815 NZD
£2,137 GBP
View
Price last confirmed 23 days ago
Most Expensive
NZ Jewellers
73da8a21-f709-44d2-ae13-d586207141f0 · Sep 25
$6,975 NZD
$3,931 USD
View
Price last confirmed 36 days ago
14 more retailers have this diamond
Prices start from $2,067 NZDSave up to $1,425 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
$2,067 NZD