Round|Natural|GIA

0.55ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6511419240

Certificate GIA 6511419240

Diamond specifications and retailer prices

From $1,080 USD
As of November 4, 2026
Save $1,402 USD (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,315 USD at NZ Jewellers · As of November 4, 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 6511419240. Listed at 22 retailers as of November 4, 2026, with a 130% 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
FluorescenceFaint
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6511419240
Dimensions5.36 × 5.32 × 3.19 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.36 mm5.32 mm0.55 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6511419240
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.8%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $1,491 USD|Low: $947 USD|High: $2,519 USD|Avg: $1,641 USD|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$1,080 USD
Retailer 10$1,137 USD
Retailer 3$1,180 USD
Retailer 12$1,279 USD
Retailer 9$1,350 USD
Retailer 1$1,491 USD
Retailer 4$1,540 USD
Retailer 5$1,754 USD
Retailer 11$1,773 USD
Retailer 6$2,097 USD
Retailer 2$2,217 USD
Retailer 7$2,482 USD

45 data points across 12 retailers

22 retailers$1,080 USD to $2,482 USD

B+
Cheapest Retailer
-
$1,080 USD
B+
Retailer 2
-
$1,137 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,175 USD
View
B+
Retailer 4
-
$1,180 USD
View
B+
Retailer 5
-
$1,231 USD
View
Retailer 6
-
$1,231 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$1,279 USD
View
B
Retailer 8
-
$1,350 USD
View
B
Retailer 9
-
$1,421 USD
View
B
Retailer 10
-
$1,470 USD
View
B
Retailer 11
-
$1,470 USD
View
B
Retailer 12
-
$1,491 USD
View
B
Retailer 13
-
$1,520 USD
View
B
Retailer 14
-
$1,540 USD
View
B
Retailer 15
-
$1,709 USD
View
B
Retailer 16
-
$1,754 USD
View
Retailer 17
-
$1,773 USD
View
Price last confirmed 32 days ago
B
Retailer 18
-
$2,097 USD
View
B
Retailer 19
-
$2,217 USD
View
B
Retailer 20
-
$2,384 USD
View
B
Retailer 21
-
$2,482 USD
View
Most Expensive
NZ Jewellers
fc518b71-e872-449c-a74e-39cfca248c75 · Nov 4
$3,315 USD
View
Price under review
21 more retailers have this diamond
Prices start from $1,080 USDSave up to $1,402 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+
0.55ct Round
$1,080 USD