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Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 5566309285

Certificate GIA 5566309285

Diamond specifications and retailer prices

From €2,876 EUR
HK$25,200 HKD
As of November 1, 2026
Save €3,837 EUR (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €6,713 EUR at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.31ct natural round diamond

This 1.31ct natural round 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 and certified by GIA 5566309285. Listed at 19 retailers as of November 1, 2026, with prices from €2,876 to €6,713, a €3,837 spread on the same certified stone. NZ Jewellers lists it at €6,713. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5566309285
Dimensions6.93 × 6.97 × 4.35 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle
Top View
6.93 mm6.97 mm1.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5566309285
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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: Nov 1
Current: €6,713 EUR|Low: €2,853 EUR|High: €6,808 EUR|Avg: €3,951 EUR|-1.4%
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
Retailer 17
Retailer 18
November 2, 2026
Retailer 16€2,876 EUR
Retailer 3€2,968 EUR
Retailer 13€3,014 EUR
Retailer 6€3,071 EUR
Retailer 8€3,221 EUR
Retailer 17€3,335 EUR
Retailer 4€3,491 EUR
Retailer 7€3,491 EUR
Retailer 18€3,491 EUR
Retailer 2€3,707 EUR
Retailer 12€3,917 EUR
Retailer 11€3,977 EUR
Retailer 5€4,027 EUR
Retailer 10€4,168 EUR
Retailer 9€4,358 EUR
Retailer 15€4,736 EUR
Retailer 14€6,136 EUR
NZ Jewellers€6,713 EUR

28 data points across 18 retailers

19 retailers€2,876 EUR to €6,713 EUR

A
Cheapest Retailer
-
€2,876 EUR
HK$25,200 HKD
A
Retailer 2
-
€2,968 EUR
$3,329 USD
View
A
Retailer 3
-
€3,014 EUR
$3,380 USD
View
A
Retailer 4
-
€3,071 EUR
$3,445 USD
View
A
Retailer 5
-
€3,108 EUR
A$5,363 AUD
View
A
Retailer 6
-
€3,221 EUR
$3,613 USD
View
Final sale: no returns
A
Retailer 7
-
€3,335 EUR
$3,740 USD
View
B+
Retailer 8
-
€3,491 EUR
$3,915 USD
View
B+
Retailer 9
-
€3,491 EUR
$3,915 USD
View
B+
Retailer 10
-
€3,491 EUR
$3,915 USD
View
B+
Retailer 11
-
€3,707 EUR
£3,274 GBP
View
B+
Retailer 12
-
€3,917 EUR
£3,459 GBP
View
B+
Retailer 13
-
€3,922 EUR
$4,399 USD
View
B+
Retailer 14
-
€3,977 EUR
View
B+
Retailer 15
-
€4,027 EUR
$4,517 USD
View
Retailer 16
-
€4,168 EUR
A$7,192 AUD
View
Price last confirmed 24 days ago
B+
Retailer 17
-
€4,736 EUR
ZAR 85,812 ZAR
View
B
Retailer 18
-
€6,136 EUR
£5,419 GBP
View
Most Expensive
B
NZ Jewellers
0f95e442-1c2c-4591-b88f-0c3541ce193b · Nov 2
€6,713 EUR
$7,529 USD
View
18 more retailers have this diamond
Prices start from €2,876 EURSave up to €3,837 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 Round
€2,876 EUR