Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6515867792

Certificate GIA 6515867792

Diamond specifications and retailer prices

From $5,957 USD
A$9,164 AUD
As of November 1, 2026
Save $6,069 USD (50%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $12,026 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6515867792. Listed at 6 retailers as of October 30, 2026, with prices from $5,957 to $12,026, a $6,069 spread on the same certified stone. NZ Jewellers lists it at $12,026. 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

1.55
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6515867792
Dimensions7.33 × 7.38 × 4.64 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.33 mm7.38 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6515867792
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.1%

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 1
Current: $12,026 USD|Low: $5,264 USD|High: $12,026 USD|Avg: $8,443 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 5$6,539 USD
Retailer 4$6,637 USD
Retailer 3$7,503 USD
Retailer 2$10,020 USD
NZ Jewellers$12,026 USD

21 data points across 5 retailers

6 retailers$5,957 USD to $12,026 USD

A
Cheapest Retailer
-
$5,957 USD
A$9,164 AUD
B+
Retailer 2
-
$6,539 USD
View
B+
Retailer 3
-
$6,637 USD
View
Final sale: no returns
B+
Retailer 4
-
$7,503 USD
€7,146 EUR
View
B
Retailer 5
-
$10,020 USD
£7,890 GBP
View
Most Expensive
B
NZ Jewellers
aab13c39-4f4d-47af-8341-dc163fead0f0 · Oct 30
$12,026 USD
View
5 more retailers have this diamond
Prices start from $5,957 USDSave up to $6,069 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
1.55ct Round
$5,957 USD