Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1555526554

Certificate GIA 1555526554

Diamond specifications and retailer prices

From €3,307 EUR

$3,695 USD

As of October 30, 2026

Save €2,535 EUR (43%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: €5,843 EUR at Wholesale Diamonds Direct · As of October 26, 2026

View at Wholesale Diamonds Direct

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 1555526554. Listed at 14 retailers as of October 26, 2026, with prices from €3,307 to €5,843, a €2,535 spread on the same certified stone. Wholesale Diamonds Direct lists it at €5,843. 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

Color

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

OriginNatural

Grading LabGIA

CertificateGIA 1555526554

Dimensions6.94 × 6.98 × 4.34 mm

L/W Ratio1.01

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 1555526554

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30

Current: €4,293 EUR|Low: €2,149 EUR|High: €5,843 EUR|Avg: €3,808 EUR|+18.3%

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

Retailer 17

Wholesale Diamonds Direct

November 1, 2026

Retailer 8€2,149 EUR

Retailer 6€2,834 EUR

Retailer 9€2,918 EUR

Retailer 4€3,168 EUR

Retailer 7€3,285 EUR

Retailer 16€3,307 EUR

Retailer 15€3,571 EUR

Retailer 2€3,979 EUR

Retailer 10€4,100 EUR

Retailer 12€4,234 EUR

Retailer 14€4,234 EUR

Retailer 1€4,293 EUR

Retailer 3€4,332 EUR

Retailer 13€4,377 EUR

Retailer 17€4,632 EUR

Retailer 11€5,101 EUR

Retailer 5€5,136 EUR

Wholesale Diamonds Direct€5,843 EUR

24 data points across 18 retailers

14 retailers€3,307 EUR to €5,843 EUR

Retailer 1

€3,285 EUR

A$5,646 AUD

Price last confirmed 36 days ago

Retailer 2

€3,307 EUR

$3,695 USD

View

B+

Retailer 3

€3,571 EUR

$3,990 USD

View

B+

Retailer 4

€3,979 EUR

$4,445 USD

View

B+

Retailer 5

€4,100 EUR

£3,606 GBP

View

B+

Retailer 6

€4,234 EUR

$4,730 USD

View

B+

Retailer 7

€4,234 EUR

$4,730 USD

View

B+

Retailer 8

€4,293 EUR

View

Retailer 9

€4,332 EUR

$4,839 USD

View

Retailer 10

€4,377 EUR

$4,890 USD

View

Retailer 11

€4,632 EUR

£4,075 GBP

View

Retailer 12

€5,101 EUR

ZAR 92,057 ZAR

View

Retailer 13

€5,294 EUR

$5,914 USD

View

Price last confirmed 35 days ago

Most Expensive

Wholesale Diamonds Direct

559978621 · Oct 26

€5,843 EUR

$6,527 USD

View

13 more retailers have this diamond

Prices start from €3,307 EURSave up to €2,535 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.

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1.31ct Round

€3,307 EUR