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Round|Natural|GIA

5.21ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 5231475571

Certificate GIA 5231475571

Diamond specifications and retailer prices

From €74,089 EUR
$82,773 USD
As of October 31, 2026
Save €55,928 EUR (43%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €130,017 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 5.21ct natural round diamond

This 5.21ct natural round sits in the over five carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5231475571. Listed at 11 retailers as of October 31, 2026, with prices from €74,089 to €130,017, a €55,928 spread on the same certified stone. MOH London lists it at €130,017. 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

5.21
Carat
G
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 5231475571
Dimensions11.27 × 11.32 × 6.77 mm
L/W Ratio1.00
Top View
11.27 mm11.32 mm5.21 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5231475571
Side View
Table 59.0%CrownGirdle: MED-STKPavilion 41.4°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
A
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 31
Current: €130,017 EUR|Low: €77,357 EUR|High: €131,584 EUR|Avg: €97,056 EUR|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3€85,093 EUR
Retailer 5€88,182 EUR
Retailer 6€88,578 EUR
Retailer 4€92,329 EUR
Retailer 2€101,940 EUR
MOH London€130,017 EUR

20 data points across 6 retailers

11 retailers€74,089 EUR to €130,017 EUR

A
Cheapest Retailer
-
€74,089 EUR
$82,773 USD
A
Retailer 2
-
€78,482 EUR
$87,681 USD
View
A
Retailer 3
-
€85,093 EUR
$95,066 USD
View
Final sale: no returns
Retailer 4
-
€86,719 EUR
$96,883 USD
View
Price last confirmed 15 days ago
Retailer 5
-
€86,719 EUR
$96,883 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
€89,357 EUR
$99,830 USD
View
B+
Retailer 7
-
€89,357 EUR
$99,830 USD
View
Retailer 8
-
€90,187 EUR
$100,758 USD
View
Price last confirmed 14 days ago
B+
Retailer 9
-
€92,329 EUR
$103,150 USD
View
B+
Retailer 10
-
€101,940 EUR
View
Most Expensive
B
MOH London
73FFD187C · Nov 1
€130,017 EUR
£114,375 GBP
View
10 more retailers have this diamond
Prices start from €74,089 EURSave up to €55,928 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.

A
5.21ct Round
€74,089 EUR