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Round|Natural|GIA

1.80ct N SI1 Round Natural Diamond

EX • N/SI1 • GIA 7556392423

Certificate GIA 7556392423

Diamond specifications and retailer prices

From $5,278 AUD
As of November 5, 2026
Save $4,340 AUD (45%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $9,618 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.8ct natural round diamond

This 1.8ct natural round sits in the one-and-a-half to two carat band, graded N colour (tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7556392423. Listed at 8 retailers as of November 5, 2026, with prices from $5,278 to $9,618, a $4,340 spread on the same certified stone. NZ Jewellers lists it at $9,618. 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

1.80
Carat
N
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7556392423
Dimensions7.68 × 7.73 × 4.82 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
7.68 mm7.73 mm1.80 ctN / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 7556392423
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.6%

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 5
Current: $9,618 AUD|Low: $5,278 AUD|High: $10,227 AUD|Avg: $6,485 AUD|-6.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 8$5,278 AUD
Retailer 4$5,521 AUD
Retailer 6$5,521 AUD
Retailer 7$5,733 AUD
Retailer 5$6,370 AUD
Retailer 2$6,413 AUD
Retailer 3$6,738 AUD
NZ Jewellers$9,618 AUD

30 data points across 8 retailers

8 retailers$5,278 AUD to $9,618 AUD

B+
Cheapest Retailer
-
$5,278 AUD
B+
Retailer 2
-
$5,521 AUD
View
Retailer 3
-
$5,521 AUD
View
Price last confirmed 8 days ago
B
Retailer 4
-
$5,733 AUD
View
B
Retailer 5
-
$6,370 AUD
View
B
Retailer 6
-
$6,413 AUD
View
B
Retailer 7
-
$6,738 AUD
View
Most Expensive
C
NZ Jewellers
55efd63b-6b65-4e40-81c3-efeaa55dee0f · Nov 5
$9,618 AUD
$6,733 USD
View
7 more retailers have this diamond
Prices start from $5,278 AUDSave up to $4,340 AUD

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+
1.80ct Round
$5,278 AUD