Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1528408616

Certificate GIA 1528408616

Diamond specifications and retailer prices

From €3,372 EUR

$3,782 USD

As of October 30, 2026

Save €2,589 EUR (43%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: €5,961 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 1528408616. Listed at 15 retailers as of October 26, 2026, with prices from €3,372 to €5,961, a €2,589 spread on the same certified stone. Wholesale Diamonds Direct lists it at €5,961. 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

Colour

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36°

Pavilion angle40.8°

OriginNatural

Grading LabGIA

CertificateGIA 1528408616

Dimensions6.92 × 6.97 × 4.35 mm

L/W Ratio1.01

Star length50%

Lower girdle75%

Culet sizeNone

Key to symbols

Crystal, Cloud, Feather, Needle

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 1528408616

Side View

Caratlytics Score

How it works →

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: Oct 30

Current: €4,381 EUR|Low: €2,948 EUR|High: €5,961 EUR|Avg: €4,202 EUR|+3.5%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Wholesale Diamonds Direct

November 1, 2026

Retailer 7€3,281 EUR

Retailer 2€3,372 EUR

Retailer 8€3,538 EUR

Retailer 10€3,638 EUR

Retailer 11€3,963 EUR

Retailer 9€4,057 EUR

Retailer 3€4,061 EUR

Retailer 4€4,180 EUR

Retailer 1€4,381 EUR

Retailer 6€4,722 EUR

Retailer 5€5,200 EUR

Wholesale Diamonds Direct€5,961 EUR

40 data points across 12 retailers

15 retailers€3,372 EUR to €5,961 EUR

Retailer 1

€3,281 EUR

$3,680 USD

Price last confirmed 12 days ago

Retailer 2

€3,372 EUR

$3,782 USD

View

B+

Retailer 3

€3,538 EUR

$3,968 USD

View

Final sale: no returns

B+

Retailer 4

€3,638 EUR

$4,080 USD

View

B+

Retailer 5

€3,963 EUR

A$6,838 AUD

View

B+

Retailer 6

€4,057 EUR

$4,550 USD

View

B+

Retailer 7

€4,061 EUR

$4,555 USD

View

B+

Retailer 8

€4,180 EUR

£3,691 GBP

View

Retailer 9

€4,315 EUR

$4,840 USD

View

Retailer 10

€4,315 EUR

$4,840 USD

View

B+

Retailer 11

€4,381 EUR

View

Retailer 12

€4,458 EUR

$5,000 USD

View

B+

Retailer 13

€4,722 EUR

£4,170 GBP

View

Retailer 14

€5,200 EUR

ZAR 94,221 ZAR

View

Most Expensive

Wholesale Diamonds Direct

269988471 · Oct 26

€5,961 EUR

$6,686 USD

View

14 more retailers have this diamond

Prices start from €3,372 EURSave up to €2,589 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

€3,372 EUR