CaratHunter
Plans
Heart|Natural|GIA

1.31ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 7541510309

Certificate GIA 7541510309

Diamond specifications and retailer prices

From $4,871 NZD
As of November 6, 2026
Save $6,265 NZD (56%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,211 NZD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.31ct natural heart diamond

This 1.31ct natural heart sits in the one-and-a-quarter to one-and-a-half 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 7541510309. Listed at 21 retailers as of November 5, 2026, with a 129% 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

1.31
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7541510309
Dimensions7.71 × 6.91 × 4.42 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.71 mm6.91 mm1.31 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7541510309
Side View
Table 61.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 57.3%

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 6
Current: $12,211 NZD|Low: $4,871 NZD|High: $12,245 NZD|Avg: $7,618 NZD|+2.7%
Queensmith
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
November 6, 2026
Retailer 12$4,871 NZD
Retailer 2$5,076 NZD
Retailer 13$6,151 NZD
Retailer 7$6,200 NZD
Retailer 6$6,391 NZD
Retailer 14$6,391 NZD
Retailer 9$6,613 NZD
Retailer 3$6,637 NZD
Retailer 8$6,772 NZD
Retailer 4$7,374 NZD
Retailer 10$7,800 NZD
Retailer 11$10,659 NZD
Retailer 5$11,135 NZD
Queensmith$12,211 NZD

26 data points across 14 retailers

21 retailers$4,871 NZD to $11,135 NZD

A
Cheapest Retailer
-
$4,871 NZD
A
Retailer 2
-
$5,076 NZD
View
A
Retailer 3
-
$5,814 NZD
View
A
Retailer 4
-
$5,899 NZD
View
Final sale: no returns
A
Retailer 5
-
$6,115 NZD
View
A
Retailer 6
-
$6,151 NZD
View
A
Retailer 7
-
$6,200 NZD
View
Retailer 8
-
$6,391 NZD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$6,391 NZD
View
A
Retailer 10
-
$6,613 NZD
View
A
Retailer 11
-
$6,637 NZD
View
A
Retailer 12
-
$6,653 NZD
View
A
Retailer 13
-
$6,692 NZD
View
A
Retailer 14
-
$6,772 NZD
View
Retailer 15
-
$6,846 NZD
View
Price last confirmed 29 days ago
A
Retailer 16
-
$6,853 NZD
View
A
Retailer 17
-
$7,374 NZD
View
B+
Retailer 18
-
$7,800 NZD
View
B+
Retailer 19
-
$10,659 NZD
View
B
Retailer 20
-
$11,135 NZD
View
Most Expensive
Queensmith
7541510309 · Oct 28
$12,211 NZD
£5,330 GBP
View
Price last confirmed 9 days ago
20 more retailers have this diamond
Prices start from $4,871 NZDSave up to $6,265 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
1.31ct Heart
$4,871 NZD