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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 £2,745 GBP
As of November 5, 2026
Save £2,257 GBP (45%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £5,003 GBP 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 £2,745 to £5,003, a £2,257 spread on the same certified stone. NZ Jewellers lists it at £5,003. 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: £5,003 GBP|Low: £2,745 GBP|High: £5,319 GBP|Avg: £3,373 GBP|-6.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 8£2,745 GBP
Retailer 4£2,872 GBP
Retailer 6£2,872 GBP
Retailer 7£2,982 GBP
Retailer 5£3,313 GBP
Retailer 2£3,335 GBP
Retailer 3£3,505 GBP
NZ Jewellers£5,003 GBP

30 data points across 8 retailers

8 retailers£2,745 GBP to £5,003 GBP

B+
Cheapest Retailer
-
£2,745 GBP
B+
Retailer 2
-
£2,872 GBP
View
Retailer 3
-
£2,872 GBP
View
Price last confirmed 8 days ago
B
Retailer 4
-
£2,982 GBP
View
B
Retailer 5
-
£3,313 GBP
View
B
Retailer 6
-
£3,335 GBP
View
B
Retailer 7
-
£3,505 GBP
View
Most Expensive
C
NZ Jewellers
55efd63b-6b65-4e40-81c3-efeaa55dee0f · Nov 5
£5,003 GBP
$6,733 USD
View
7 more retailers have this diamond
Prices start from £2,745 GBPSave up to £2,257 GBP

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
£2,745 GBP