Round|Natural|GIA

5.21ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 5231475571

Certificate GIA 5231475571

Diamond specifications and retailer prices

From $115,626 CAD
$82,773 USD
As of October 31, 2026
Save $44,590 CAD (28%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $203,996 CAD at MOH London · As of October 18, 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 30, 2026, with a 39% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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: $203,996 CAD|Low: $115,626 CAD|High: $205,353 CAD|Avg: $146,303 CAD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 7$115,626 CAD
Retailer 3$132,798 CAD
Retailer 5$137,619 CAD
Retailer 6$138,237 CAD
Retailer 4$144,090 CAD
Retailer 2$160,215 CAD
MOH London$203,996 CAD

19 data points across 7 retailers

11 retailers$115,626 CAD to $160,215 CAD

A
Cheapest Retailer
-
$115,626 CAD
$82,773 USD
A
Retailer 2
-
$122,481 CAD
$87,681 USD
View
A
Retailer 3
-
$132,798 CAD
$95,066 USD
View
Final sale: no returns
Retailer 4
-
$135,336 CAD
$96,883 USD
View
Price last confirmed 14 days ago
Retailer 5
-
$135,336 CAD
$96,883 USD
View
Price last confirmed 16 days ago
B+
Retailer 6
-
$139,453 CAD
$99,830 USD
View
B+
Retailer 7
-
$139,453 CAD
$99,830 USD
View
Retailer 8
-
$140,749 CAD
$100,758 USD
View
Price last confirmed 14 days ago
B+
Retailer 9
-
$144,090 CAD
$103,150 USD
View
B+
Retailer 10
-
$160,215 CAD
€109,232 EUR
View
Most Expensive
MOH London
73FFD187C · Oct 18
$203,996 CAD
£114,988 GBP
View
Price last confirmed 14 days ago
10 more retailers have this diamond
Prices start from $115,626 CADSave up to $44,590 CAD

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
$115,626 CAD