Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6505827712

Certificate GIA 6505827712

Diamond specifications and retailer prices

From $672 USD
As of November 6, 2026
Save $1,298 USD (66%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $2,849 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.55ct natural round diamond

This 0.55ct natural round sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505827712. Listed at 27 retailers as of November 5, 2026, with a 193% 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

0.55
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6505827712
Dimensions5.25 × 5.22 × 3.28 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
5.25 mm5.22 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505827712
Side View
Table 56.0%Crown 34°Girdle: ThickPavilion 41.6°Culet: NoneDepth 62.7%

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 6
Current: $672 USD|Low: $672 USD|High: $1,684 USD|Avg: $1,091 USD|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 1$672 USD
Retailer 3$838 USD
Retailer 9$875 USD
Retailer 11$909 USD
Retailer 5$1,046 USD
Retailer 2$1,065 USD
Retailer 7$1,092 USD
Retailer 4$1,169 USD
Retailer 6$1,172 USD
Retailer 8$1,402 USD
Retailer 10$1,663 USD

31 data points across 11 retailers

27 retailers$672 USD to $1,970 USD

A
Cheapest Retailer
-
$672 USD
A
Retailer 2
-
$831 USD
View
A
Retailer 3
-
$838 USD
View
Final sale: no returns
A
Retailer 4
-
$875 USD
View
Retailer 5
-
$909 USD
View
Price last confirmed 8 days ago
Retailer 6
-
$909 USD
View
Price last confirmed 20 days ago
Retailer 7
-
$909 USD
View
Price last confirmed 39 days ago
Retailer 8
-
$909 USD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$909 USD
View
B+
Retailer 10
-
$919 USD
View
Retailer 11
-
$943 USD
View
Price last confirmed 22 days ago
B+
Retailer 12
-
$973 USD
View
B+
Retailer 13
-
$1,041 USD
View
B+
Retailer 14
-
$1,046 USD
View
Retailer 15
-
$1,048 USD
View
Price last confirmed 40 days ago
B+
Retailer 16
-
$1,048 USD
View
B+
Retailer 17
-
$1,065 USD
View
B+
Retailer 18
-
$1,092 USD
View
B+
Retailer 19
-
$1,169 USD
View
B+
Retailer 20
-
$1,172 USD
View
Retailer 21
-
$1,366 USD
View
Price last confirmed 32 days ago
B+
Retailer 22
-
$1,402 USD
View
B
Retailer 23
-
$1,663 USD
View
B
Retailer 24
-
$1,970 USD
View
Retailer 25
-
$2,849 USD
View
Price last confirmed 43 days ago
Retailer 26
-
$2,849 USD
View
Price last confirmed 20 days ago
Most Expensive
NZ Jewellers
069e317e-d3f5-48cb-a98f-0d0638402bf8 · Oct 30
$2,849 USD
View
Price last confirmed 7 days ago
26 more retailers have this diamond
Prices start from $672 USDSave up to $1,298 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
$672 USD