Round|Natural|GIA

0.55ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2568551221

Certificate GIA 2568551221

Diamond specifications and retailer prices

From $388 USD
As of November 4, 2026
Save $873 USD (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,261 USD at MOH London · As of November 4, 2026
View at MOH London

About this 0.55ct natural round diamond

This 0.55ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2568551221. Listed at 11 retailers as of November 4, 2026, with prices from $388 to $1,261, a $873 spread on the same certified stone. MOH London lists it at $1,261. 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

0.55
Carat
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2568551221
Dimensions5.23 × 5.26 × 3.28 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal
Top View
5.23 mm5.26 mm0.55 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2568551221
Side View
Table 57.0%Crown 36.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.5%

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: Nov 4
Current: $1,261 USD|Low: $388 USD|High: $1,265 USD|Avg: $657 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$388 USD
Retailer 2$411 USD
Retailer 6$444 USD
Retailer 9$473 USD
Retailer 3$584 USD
Retailer 10$586 USD
Retailer 4$680 USD
Retailer 7$719 USD
Retailer 5$754 USD
MOH London$1,261 USD

15 data points across 10 retailers

11 retailers$388 USD to $1,261 USD

A
Cheapest Retailer
-
$388 USD
Final sale: no returns
A
Retailer 2
-
$411 USD
View
A
Retailer 3
-
$444 USD
View
A
Retailer 4
-
$473 USD
View
A
Retailer 5
-
$551 USD
View
A
Retailer 6
-
$584 USD
View
A
Retailer 7
-
$586 USD
View
A
Retailer 8
-
$680 USD
View
A
Retailer 9
-
$719 USD
View
B+
Retailer 10
-
$754 USD
View
Most Expensive
B
MOH London
E91F7029D · Nov 4
$1,261 USD
£993 GBP
View
10 more retailers have this diamond
Prices start from $388 USDSave up to $873 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.

A
0.55ct Round
$388 USD