Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1559947635

Certificate GIA 1559947635

Diamond specifications and retailer prices

From $652 USD
As of November 6, 2026
Save $969 USD (60%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,854 USD at NZ Jewellers · As of September 24, 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 1559947635. Listed at 22 retailers as of November 2, 2026, with a 149% 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 angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1559947635
Dimensions5.21 × 5.24 × 3.26 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal
Top View
5.21 mm5.24 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559947635
Side View
Table 60.0%Crown 35°Girdle: MediumPavilion 41.4°Culet: NoneDepth 62.4%

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: $2,750 USD|Low: $640 USD|High: $2,750 USD|Avg: $1,229 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 15$652 USD
Retailer 4$816 USD
Retailer 11$841 USD
Retailer 3$896 USD
Retailer 9$900 USD
Retailer 10$902 USD
Retailer 8$1,001 USD
Retailer 7$1,035 USD
Retailer 16$1,047 USD
Retailer 2$1,139 USD
Retailer 5$1,172 USD
Retailer 6$1,224 USD
Retailer 12$1,241 USD
Retailer 13$1,366 USD
Retailer 14$1,621 USD
NZ Jewellers$2,750 USD

27 data points across 16 retailers

22 retailers$652 USD to $1,621 USD

A
Cheapest Retailer
-
$652 USD
A
Retailer 2
-
$816 USD
View
Final sale: no returns
Retailer 3
-
$840 USD
View
Price last confirmed 38 days ago
A
Retailer 4
-
$841 USD
View
A
Retailer 5
-
$896 USD
View
A
Retailer 6
-
$900 USD
View
A
Retailer 7
-
$902 USD
View
Retailer 8
-
$910 USD
View
Price last confirmed 36 days ago
Retailer 9
-
$945 USD
View
Price last confirmed 38 days ago
Retailer 10
-
$1,001 USD
View
Price last confirmed 19 days ago
Retailer 11
-
$1,035 USD
View
Price last confirmed 14 days ago
B+
Retailer 12
-
$1,047 USD
View
Retailer 13
-
$1,050 USD
View
Price last confirmed 38 days ago
B+
Retailer 14
-
$1,139 USD
View
B+
Retailer 15
-
$1,172 USD
View
B+
Retailer 16
-
$1,224 USD
View
B+
Retailer 17
-
$1,241 USD
View
B+
Retailer 18
-
$1,366 USD
View
Retailer 19
-
$1,393 USD
View
Price last confirmed 33 days ago
B
Retailer 20
-
$1,621 USD
View
Retailer 21
-
$2,750 USD
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
e97691f5-6850-4cc3-a733-ef7ac86c9fc3 · Sep 24
$2,854 USD
View
Price last confirmed 42 days ago
21 more retailers have this diamond
Prices start from $652 USDSave up to $969 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
$652 USD