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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 $3,695 USD
As of November 5, 2026
Save $3,038 USD (45%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,733 USD 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 $3,695 to $6,733, a $3,038 spread on the same certified stone. NZ Jewellers lists it at $6,733. 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
Color
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: $6,733 USD|Low: $3,695 USD|High: $7,159 USD|Avg: $4,539 USD|-6.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 8$3,695 USD
Retailer 4$3,865 USD
Retailer 6$3,865 USD
Retailer 7$4,013 USD
Retailer 5$4,459 USD
Retailer 2$4,489 USD
Retailer 3$4,717 USD
NZ Jewellers$6,733 USD

30 data points across 8 retailers

8 retailers$3,695 USD to $6,733 USD

B+
Cheapest Retailer
-
$3,695 USD
B+
Retailer 2
-
$3,865 USD
View
Retailer 3
-
$3,865 USD
View
Price last confirmed 8 days ago
B
Retailer 4
-
$4,013 USD
View
B
Retailer 5
-
$4,459 USD
View
B
Retailer 6
-
$4,489 USD
View
B
Retailer 7
-
$4,717 USD
View
Most Expensive
C
NZ Jewellers
55efd63b-6b65-4e40-81c3-efeaa55dee0f · Nov 5
$6,733 USD
View
7 more retailers have this diamond
Prices start from $3,695 USDSave up to $3,038 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+
1.80ct Round
$3,695 USD