Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 2235970813

Certificate GIA 2235970813

Diamond specifications and retailer prices

From €1,975 EUR

A$3,408 AUD

As of November 2, 2026

Save €1,565 EUR (44%) vs most expensive(unlock to see where)

7 retailers carry this diamond

Most expensive: €3,540 EUR at Blue Nile · As of October 31, 2026

View at Blue Nile

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2235970813. Listed at 7 retailers as of October 31, 2026, with prices from €1,975 to €3,540, a €1,565 spread on the same certified stone. Blue Nile lists it at €3,540. 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

1.21

Carat

Color

SI1

Clarity

Excellent

Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Pavilion angle38.01°

OriginNatural

Grading LabGIA

CertificateGIA 2235970813

Dimensions7.08 × 5.53 × 3.85 mm

L/W Ratio1.28

Key to symbols

Crystal, Feather, Needle

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 2235970813

Side View

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 2

Current: €3,540 EUR|Low: €1,347 EUR|High: €3,540 EUR|Avg: €2,182 EUR|+64.0%

Blue Nile

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

October 29, 2026

Retailer 6€1,347 EUR

Retailer 4€1,823 EUR

Retailer 7€1,885 EUR

Retailer 8€1,975 EUR

Retailer 2€2,491 EUR

Retailer 3€2,522 EUR

Retailer 5€3,271 EUR

Blue Nile€3,540 EUR

27 data points across 8 retailers

7 retailers€1,975 EUR to €3,540 EUR

Retailer 1

€1,347 EUR

HK$11,800 HKD

Price last confirmed 25 days ago

Retailer 2

€1,885 EUR

SGD 2,857 SGD

View

Price last confirmed 27 days ago

B+

Retailer 3

€1,975 EUR

A$3,408 AUD

View

Retailer 4

€2,446 EUR

$2,743 USD

View

Price last confirmed 9 days ago

Retailer 5

€2,491 EUR

£2,200 GBP

View

Price last confirmed 7 days ago

Retailer 6

€3,271 EUR

£2,889 GBP

View

Price last confirmed 28 days ago

Most Expensive

Blue Nile

30516716 · Oct 31

€3,540 EUR

$3,970 USD

View

6 more retailers have this diamond

Prices start from €1,975 EURSave up to €1,565 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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