Round|Natural|GIA

5.50ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1226978892

Certificate GIA 1226978892

Diamond specifications and retailer prices

From $132,504 USD
As of October 30, 2026
Save $99,147 USD (43%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $231,651 USD at MOH London · As of October 29, 2026
View at MOH London

About this 5.5ct natural round diamond

This 5.5ct natural round sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1226978892. Listed at 6 retailers as of October 29, 2026, with prices from $132,504 to $231,651, a $99,147 spread on the same certified stone. MOH London lists it at $231,651. 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

5.50
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1226978892
Dimensions11.17 × 11.25 × 7.04 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
11.17 mm11.25 mm5.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1226978892
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $231,651 USD|Low: $127,775 USD|High: $233,194 USD|Avg: $159,634 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 4$127,775 USD
Retailer 6$132,504 USD
Retailer 5$137,431 USD
Retailer 2$142,607 USD
Retailer 3$179,015 USD
MOH London$231,651 USD

38 data points across 6 retailers

6 retailers$132,504 USD to $231,651 USD

Retailer 1
-
$127,775 USD
Price last confirmed 13 days ago
B+
Retailer 2
-
$132,504 USD
View
Retailer 3
-
$137,431 USD
A$211,432 AUD
View
Price last confirmed 27 days ago
B+
Retailer 4
-
$142,607 USD
£112,289 GBP
View
B+
Retailer 5
-
$179,015 USD
€170,490 EUR
View
Most Expensive
B
MOH London
7F3AA0852 · Oct 29
$231,651 USD
£182,402 GBP
View
5 more retailers have this diamond
Prices start from $132,504 USDSave up to $99,147 USD

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+
5.50ct Round
$132,504 USD