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Heart|Natural|GIA

1.31ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 6531769899

Certificate GIA 6531769899

Diamond specifications and retailer prices

From €2,063 EUR
₹219,456 INR
As of November 1, 2026
Save €3,558 EUR (63%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €5,620 EUR at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

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 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 6531769899. Listed at 20 retailers as of October 30, 2026, with a 172% 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
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.07°
Pavilion angle38.95°
OriginNatural
Grading LabGIA
CertificateGIA 6531769899
Dimensions6.66 × 7.59 × 4.49 mm
L/W Ratio1.14
Top View
6.66 mm7.59 mm1.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531769899
Side View
Table 60.0%Crown 39.07°Girdle: MED-THKPavilion 38.95°Culet: NoneDepth 59.1%

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: €5,620 EUR|Low: €2,062 EUR|High: €5,620 EUR|Avg: €2,945 EUR|+17.6%
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 1, 2026
Retailer 2€2,063 EUR
Retailer 6€2,295 EUR
Retailer 13€2,408 EUR
Retailer 15€2,481 EUR
Retailer 3€2,623 EUR
Retailer 5€2,688 EUR
Retailer 16€2,688 EUR
Retailer 4€2,792 EUR
Retailer 14€2,816 EUR
Retailer 8€2,872 EUR
Retailer 10€2,874 EUR
Retailer 7€3,039 EUR
Retailer 12€3,101 EUR
Retailer 11€3,304 EUR
Retailer 9€4,496 EUR
NZ Jewellers€5,620 EUR

35 data points across 16 retailers

20 retailers€2,063 EUR to €5,620 EUR

A
Cheapest Retailer
-
€2,063 EUR
₹219,456 INR
A
Retailer 2
-
€2,295 EUR
$2,564 USD
View
A
Retailer 3
-
€2,408 EUR
$2,690 USD
View
A
Retailer 4
-
€2,481 EUR
$2,772 USD
View
Final sale: no returns
A
Retailer 5
-
€2,489 EUR
$2,781 USD
View
B+
Retailer 6
-
€2,623 EUR
$2,930 USD
View
Retailer 7
-
€2,688 EUR
$3,003 USD
View
Price last confirmed 40 days ago
B+
Retailer 8
-
€2,688 EUR
$3,003 USD
View
B+
Retailer 9
-
€2,688 EUR
$3,003 USD
View
B+
Retailer 10
-
€2,792 EUR
$3,119 USD
View
B+
Retailer 11
-
€2,816 EUR
$3,146 USD
View
Retailer 12
-
€2,872 EUR
A$4,936 AUD
View
Price last confirmed 25 days ago
B+
Retailer 13
-
€2,874 EUR
£2,529 GBP
View
B+
Retailer 14
-
€3,039 EUR
$3,395 USD
View
Retailer 15
-
€3,101 EUR
$3,465 USD
View
Price last confirmed 39 days ago
B+
Retailer 16
-
€3,101 EUR
$3,465 USD
View
B+
Retailer 17
-
€3,304 EUR
ZAR 59,640 ZAR
View
B
Retailer 18
-
€4,496 EUR
£3,955 GBP
View
B
Retailer 19
-
€5,620 EUR
$6,279 USD
View
Most Expensive
NZ Jewellers
95c02344-1a40-4209-bdc5-fe4540743353 · Sep 25
€5,620 EUR
$6,279 USD
View
Price last confirmed 37 days ago
19 more retailers have this diamond
Prices start from €2,063 EURSave up to €3,558 EUR

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
€2,063 EUR