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Round|Natural|GIA

5.26ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6512842881

Certificate GIA 6512842881

Diamond specifications and retailer prices

From $139,302 AUD
$97,852 USD
As of October 30, 2026
Save $88,144 AUD (39%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $227,446 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 5.26ct natural round diamond

This 5.26ct natural round sits in the over five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6512842881. Listed at 8 retailers as of October 30, 2026, with prices from $139,302 to $227,446, a $88,144 spread on the same certified stone. MOH London lists it at $227,446. 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

5.26
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6512842881
Dimensions11.08 × 11.00 × 6.94 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
11.08 mm11.00 mm5.26 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512842881
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.9%

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: Oct 30
Current: $227,446 AUD|Low: $139,302 AUD|High: $230,187 AUD|Avg: $166,112 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 4$139,302 AUD
Retailer 6$140,086 AUD
Retailer 3$146,320 AUD
Retailer 5$163,709 AUD
Retailer 2$172,587 AUD
MOH London$227,446 AUD

37 data points across 6 retailers

8 retailers$139,302 AUD to $227,446 AUD

B+
Cheapest Retailer
-
$139,302 AUD
$97,852 USD
B+
Retailer 2
-
$140,086 AUD
$98,403 USD
View
B+
Retailer 3
-
$146,320 AUD
£80,930 GBP
View
Retailer 4
-
$151,703 AUD
$106,563 USD
View
Price last confirmed 34 days ago
B+
Retailer 5
-
$151,703 AUD
$106,563 USD
View
B
Retailer 6
-
$163,709 AUD
$114,997 USD
View
B
Retailer 7
-
$172,587 AUD
€115,460 EUR
View
Most Expensive
B
MOH London
201DB1B9B · Nov 1
$227,446 AUD
£125,802 GBP
View
7 more retailers have this diamond
Prices start from $139,302 AUDSave up to $88,144 AUD

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.

B+
5.26ct Round
$139,302 AUD