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Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1519325608

Certificate GIA 1519325608

Diamond specifications and retailer prices

From €3,927 EUR
$4,387 USD
As of November 1, 2026
Save €4,385 EUR (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €8,312 EUR at NZ Jewellers · As of October 30, 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 1519325608. Listed at 16 retailers as of October 30, 2026, with prices from €3,927 to €8,312, a €4,385 spread on the same certified stone. NZ Jewellers lists it at €8,312. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1519325608
Dimensions6.99 × 6.96 × 4.35 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Top View
6.99 mm6.96 mm1.31 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1519325608
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €4,817 EUR|Low: €3,463 EUR|High: €8,011 EUR|Avg: €5,310 EUR|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4€3,988 EUR
Retailer 6€4,156 EUR
Retailer 8€4,502 EUR
Retailer 1€4,817 EUR
Retailer 7€4,978 EUR
Retailer 2€5,600 EUR
Retailer 3€6,109 EUR
Retailer 5€7,958 EUR

44 data points across 8 retailers

16 retailers€3,927 EUR to €8,312 EUR

B+
Cheapest Retailer
-
€3,927 EUR
$4,387 USD
B+
Retailer 2
-
€3,988 EUR
$4,455 USD
View
B+
Retailer 3
-
€4,156 EUR
$4,643 USD
View
Final sale: no returns
B
Retailer 4
-
€4,460 EUR
$4,983 USD
View
B
Retailer 5
-
€4,502 EUR
$5,030 USD
View
B
Retailer 6
-
€4,502 EUR
$5,030 USD
View
B
Retailer 7
-
€4,502 EUR
$5,030 USD
View
B+
Retailer 8
-
€4,765 EUR
$5,324 USD
View
B+
Retailer 9
-
€4,817 EUR
£4,238 GBP
View
Retailer 10
-
€4,978 EUR
A$8,556 AUD
View
Price last confirmed 23 days ago
B
Retailer 11
-
€5,195 EUR
$5,804 USD
View
Retailer 12
-
€5,483 EUR
$6,126 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
€5,600 EUR
View
B
Retailer 14
-
€6,109 EUR
ZAR 110,259 ZAR
View
B
Retailer 15
-
€7,958 EUR
£7,001 GBP
View
Most Expensive
B
NZ Jewellers
453e8bd4-76ab-4f83-ae35-d2c612b6d1e4 · Oct 30
€8,312 EUR
$9,286 USD
View
15 more retailers have this diamond
Prices start from €3,927 EURSave up to €4,385 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.

B+
1.31ct Round
€3,927 EUR