Round|Natural|GIA

0.55ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1557129599

Certificate GIA 1557129599

Diamond specifications and retailer prices

From $550 USD
As of November 5, 2026
Save $465 USD (46%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,015 USD at Frank Darling · As of November 6, 2026
View at Frank Darling

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 1557129599. Listed at 11 retailers as of November 5, 2026, with prices from $550 to $1,015, a $465 spread on the same certified stone. Frank Darling lists it at $1,015. 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
FluorescenceNone
Crown angle32°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1557129599
Dimensions5.33 × 3.19 × 3.19 mm
L/W Ratio1.67
Culet sizeNone
Top View
5.33 mm3.19 mm0.55 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1557129599
Side View
Table 59.0%Crown 32°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,015 USD|Low: $550 USD|High: $1,027 USD|Avg: $772 USD|-1.1%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$550 USD
Retailer 10$591 USD
Retailer 4$637 USD
Retailer 3$684 USD
Retailer 7$767 USD
Retailer 5$823 USD
Retailer 6$825 USD
Retailer 2$866 USD
Retailer 8$878 USD
Frank Darling$1,015 USD

41 data points across 10 retailers

11 retailers$550 USD to $1,015 USD

A
Cheapest Retailer
-
$550 USD
A
Retailer 2
-
$591 USD
View
A
Retailer 3
-
$637 USD
View
A
Retailer 4
-
$684 USD
View
B+
Retailer 5
-
$703 USD
View
B+
Retailer 6
-
$767 USD
View
B+
Retailer 7
-
$823 USD
View
B+
Retailer 8
-
$825 USD
View
B+
Retailer 9
-
$866 USD
View
B+
Retailer 10
-
$878 USD
View
Most Expensive
B+
Frank Darling
2628440HK · Nov 6
$1,015 USD
View
10 more retailers have this diamond
Prices start from $550 USDSave up to $465 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
$550 USD