CaratHunter
Plans
Heart|Natural|GIA

0.91ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 5231889631

Certificate GIA 5231889631

Diamond specifications and retailer prices

From $1,726 NZD
HK$7,600 HKD
As of October 31, 2026
Save $1,316 NZD (43%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,379 NZD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.91ct natural heart diamond

This 0.91ct 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 5231889631. Listed at 16 retailers as of October 31, 2026, with a 76% 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

0.91
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle38°
OriginNatural
Grading LabGIA
CertificateGIA 5231889631
Dimensions6.09 × 6.75 × 3.83 mm
L/W Ratio1.11
Top View
6.09 mm6.75 mm0.91 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5231889631
Side View
Table 58.0%CrownGirdle: STK-VTKPavilion 38°Culet: NoneDepth 56.7%

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 31
Current: $2,200 NZD|Low: $1,658 NZD|High: $5,097 NZD|Avg: $2,855 NZD|-5.3%
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
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 10$1,726 NZD
Retailer 9$2,112 NZD
Retailer 2$2,158 NZD
Retailer 12$2,186 NZD
Retailer 1$2,200 NZD
Retailer 14$2,207 NZD
Retailer 11$2,214 NZD
Retailer 16$2,395 NZD
Retailer 13$2,475 NZD
Retailer 3$2,537 NZD
Retailer 7$3,058 NZD
Retailer 5$3,234 NZD
Retailer 6$3,432 NZD
Retailer 15$3,438 NZD
Retailer 8$4,335 NZD
Retailer 4$4,558 NZD

30 data points across 16 retailers

16 retailers$1,726 NZD to $3,042 NZD

A
Cheapest Retailer
-
$1,726 NZD
HK$7,600 HKD
A
Retailer 2
-
$2,112 NZD
€1,134 EUR
View
A
Retailer 3
-
$2,158 NZD
$1,216 USD
View
Final sale: no returns
A
Retailer 4
-
$2,186 NZD
$1,232 USD
View
A
Retailer 5
-
$2,200 NZD
$1,240 USD
View
A
Retailer 6
-
$2,207 NZD
$1,244 USD
View
A
Retailer 7
-
$2,214 NZD
£982 GBP
View
Retailer 8
-
$2,395 NZD
SGD 1,824 SGD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$2,475 NZD
$1,395 USD
View
B+
Retailer 10
-
$3,042 NZD
A$2,638 AUD
View
Retailer 11
-
$3,058 NZD
A$2,652 AUD
View
Price last confirmed 27 days ago
Retailer 12
-
$3,432 NZD
ZAR 31,250 ZAR
View
Price last confirmed 27 days ago
Retailer 13
-
$3,438 NZD
$1,938 USD
View
Price last confirmed 8 days ago
Retailer 14
-
$4,335 NZD
£1,924 GBP
View
Price last confirmed 26 days ago
Retailer 15
-
$4,558 NZD
£2,023 GBP
View
Price last confirmed 22 days ago
Most Expensive
NZ Jewellers
abe365ce-3079-4e6a-bb65-d767b28415f3 · Sep 25
$6,379 NZD
$3,595 USD
View
Price last confirmed 36 days ago
15 more retailers have this diamond
Prices start from $1,726 NZDSave up to $1,316 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
0.91ct Heart
$1,726 NZD