Round|Natural|GIA

1.31ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1528408616

Certificate GIA 1528408616

Diamond specifications and retailer prices

From €3,385 EUR

$3,782 USD

As of October 30, 2026

Save €2,600 EUR (43%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: €5,985 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 €3,385 to €5,985, a €2,600 spread on the same certified stone. Wholesale Diamonds Direct lists it at €5,985. 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

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: €4,398 EUR|Low: €2,960 EUR|High: €5,985 EUR|Avg: €4,219 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€3,294 EUR

Retailer 2€3,385 EUR

Retailer 8€3,552 EUR

Retailer 10€3,652 EUR

Retailer 11€3,978 EUR

Retailer 9€4,073 EUR

Retailer 3€4,077 EUR

Retailer 4€4,196 EUR

Retailer 1€4,398 EUR

Retailer 6€4,740 EUR

Retailer 5€5,220 EUR

Wholesale Diamonds Direct€5,985 EUR

41 data points across 12 retailers

15 retailers€3,385 EUR to €5,985 EUR

Retailer 1

€3,294 EUR

$3,680 USD

Price last confirmed 10 days ago

Retailer 2

€3,385 EUR

$3,782 USD

View

B+

Retailer 3

€3,552 EUR

$3,968 USD

View

Final sale: no returns

B+

Retailer 4

€3,652 EUR

$4,080 USD

View

B+

Retailer 5

€3,978 EUR

A$6,838 AUD

View

B+

Retailer 6

€4,073 EUR

$4,550 USD

View

B+

Retailer 7

€4,077 EUR

$4,555 USD

View

B+

Retailer 8

€4,196 EUR

£3,691 GBP

View

Retailer 9

€4,332 EUR

$4,840 USD

View

Retailer 10

€4,332 EUR

$4,840 USD

View

B+

Retailer 11

€4,398 EUR

View

Retailer 12

€4,475 EUR

$5,000 USD

View

B+

Retailer 13

€4,740 EUR

£4,170 GBP

View

Retailer 14

€5,220 EUR

ZAR 94,221 ZAR

View

Most Expensive

Wholesale Diamonds Direct

269988471 · Oct 26

€5,985 EUR

$6,686 USD

View

14 more retailers have this diamond

Prices start from €3,385 EURSave up to €2,600 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

€3,385 EUR